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    Dr. G. Unnikrishnan
    Dr. G. Unnikrishnan

    Professor

    Office Address:

    Professor, Department of Chemistry, Room no. CHY-208, National Institute of Technology Calicut, NIT Campus P.O, Kerala State -673601 India

    Contact no:

    +91-495-2285302, 9846764238(M),2287833

    Email ID:

    unnig@nitc.ac.in

    Home Address:

  • PhD

    • Educational Qualifications

    • PhD

    Journals

    Peer Reviewed Journals

    1. M. Monisha, G. Benu, K. Juraij, S. Sujatha, T. V. Suchithra, A. Sujith, G. Unnikrishnan, Cationic-porphyrin Incorporated Electrospun Fibers for Effective Photo-inactivation of Bacteria, Mater. Today Commun. 2023, 38, 107597. https://doi.org/10.1016/j.mtcomm.2023.107597
    2. E. M. Aleena, G. Unnikrishnan, V. Anitha, Development and Characterization of Banana Fiber (Treated & Untreated) Reinforced HPMC Films, EPRA International Journal of Research and Development (IJRD). 2023, 8(9), 246-252. https://eprajournals.net/index.php/IJRD/article/view/2878
    3. M. M. Mekha, G. Unnikrishnan, Mechanical, thermal and morphological features of biodegradable crosslinked natural rubber latex-dextrin blends, J. Polym. Res. 2023, 30(10), 1-17. https://doi.org/10.1007/s10965-023-03772-w
    4. H. Amina, G. Unnikrishnan, Bio-lubricants from vegetable oils: Characterization, modifications, applications and challenges–Review. Renew. Sust. Energ. Rev.2023.182, 113413.  https://doi.org/10.1016/j.rser.2023.113413
    5. U. Archa, M.M. Mekha, M. Monisha J. Sunil, S. Pooja, T.V. Suchithra, G. Unnikrishnan, Biocompatibility evaluation of nano-hydroxyapatite modified hydroxypropyl methylcellulose/polyvinylpyrrolidone blends, Polym. Bull. 2023, 1-20. https://doi.org/10.1007/s00289-023-04870-x
    6. M. Vintu, M. Monisha M, G. Unnikrishnan, S. Jacob, Semiconducting indolocarbazole based polymer decorated with magnetic ferrofluid for efficient Cr (VI) removal. Polym. Bull. 2023,1-28.  https://doi.org/10.1007/s00289-023-04883-6
    7. B. Satheesh Kumar, K.R. Roshith, G. Unnikrishnan, K.S. Santhosh Kumar, Metal organic framework enroutes to mechanically stable and high proton conductive polybenzimidazole membranes, Polymer. 2023,274, 125904.  https://doi.org/10.1016/j.polymer.2023.125904
    8. J. Janisha, M. Monisha, M.M. Mekha, G. Unnikrishnan, Effect of glycerol and dibutyl phthalate on modified natural rubber latex based drug delivery systems,Int. J. Biol. Macromol. 2023, 231, 123286. https://doi.org/10.1016/j.ijbiomac.2023.123286
    9. .M. Bindu, A. Anil, G. Unnikrishnan, Multifunctional hydroxylapatite nanofillers for fine-tuning of elastomer characteristics, Applications of Multifunctional Nanomaterials, 2023, 199-229, Elsevier.
    10. S.A. Rahim, G. Unnikrishnan, M.A. Joseph, M. Ali, A. Afzal, Chitosan-reinforced nitrile rubber–a step towards sustainable development, Plast. Rubber Compos.2022, 51 (7), 343-351. https://doi.org/10.1080/14658011.2021.1991166.
    11. K. Sunitha, S. Mahesh, C. Suchithra, G. Unnikrishnan, C.P. Reghunadhan Nair, Comb like amphiphilic graft copolymers bearing PDMS and PEO side chains: synthesis and solvent assisted self-assembly behavior, J. Polym. Res. 2022, 29 (7), 288. https://doi.org/10.1007/s10965-022-03128-w
    12. S. Anitha, G.  Unnikrishnan, K.S. Kumar, Self-blowing non-isocyanate polyurethane foam: Synthesis, characterization and properties. Mater. Lett.X. 2022, 14, 100142. https://doi.org/10.1016/j.mlblux.2022.100142
    13. M. Monisha, S. Sasidharan, S. Saudagar, G. Unnikrishnan, S. Sujatha, Photodynamic evaluation of triazine appended porphyrins as anti-leishmanial and anti-tumor agents, Polyhedron. 2022, 217, 115711. https://doi.org/10.1016/j.poly.2022.115711
    14. J. Jasmin, P. Ramesh, G. Unnikrishnan, Recent advancements in blended and reinforced polymeric systems as bioscaffolds, Int. J. Polym. Mater. 2023, 1-22. https://doi.org/10.1080/00914037.2022.2066666
    15. V.M. Afnas, G.  Unnikrishnan, S. Budhe, O. Manaf, J. Ameen, PVA/gelatin/chitin ternary blend as a humidity sensing material, J. Mater. Sci.: Mater. Electron. 2022, 33 (4), 2031-2043. https://doi.org/10.1007/s10854-021-07406-z
    16. P.H. Abdul, A.V. Lity, G. Unnikrishnan, O. Manaf, K. Mohan Das J. Ameen, Phenol Formaldehyde Resole/Nanosilver Colloid Immobilized Polyester Textile Composite for Antibacterial Applications, ChemistrySelect, 2021, 6 (43), 12212-12219. https://doi.org/10.1002/slct.202103037
    17. C. Rajesh, P. Divia, S. Dinooplal, G.  Unnikrishnan, E. Purushothaman, Dynamic mechanical analysis of nylon 6 fiber-reinforced acrylonitrile butadiene rubber composites. Polym. Polym. Compos. 2021. 29 (9_suppl), S1328-S1339. https://doi.org/10.1002/mren.202100001
    18. P.H. Abdul, A.V. Lity, G. Unnikrishnan, K. Mohan Das, Novel protocol for resole phenol formaldehyde resins synthesis with tubular reactor and characterization, Macromol. React. Eng.2021, 15 (4), 2100001. https://doi.org/10.1002/mren.202100001
    19. V.H. Shafeeq, C.K. Subash, K. Juraij, V. Soney, A. Sujith, G. Unnikrishnan, Stimuli-Responsive Electrospun Piezoelectric Mats of Ethylene-co-vinyl Acetate–Millable Polyurethane–Nanohydroxyapatite Composites, ACS Appl. Mater. Interfaces. 2021, 13 (20), 24106-24116. https://doi.org/10.1021/acsami.1c02674
    20. J. Renu, A.V. Lity, G. Unnikrishnan, Tailoring dielectric properties of natural rubber/millable polyurethane elastomer blends by filler embedding. Polym. Bull. 2021, 1-20. https://doi.org/10.1007/s00289-021-03595-z
    21. V. H. Shafeeq, G. Unnikrishnan, Matrix - Filler Interactions and Solvent Sorption Features of Nanohydroxyapatite (nHA) Embedded Ethylene –co- Vinyl acetate (EVA) – Millable Polyurethane (MPU) Blends, Phys. Chem. Chem. Phys. 2020, 69 (12), 1256-1266.  https://doi.org/10.1039/D0CP04275G
    22. V. H. Shafeeq, C. K. Subash, S. Varghese, G. Unnikrishnan, Nanohydroxyapatite embedded blends of ethylene‐co‐vinyl acetate and millable polyurethane as piezoelectric materials: dielectric, viscoelastic and mechanical features, Polym. Int. 2020, 177, 109187.  https://doi.org/10.1002/pi.6070
    23. R. Rarima, G. Unnikrishnan, Poly(lactic acid)/gelatin foams by non-solvent induced phase separation for biomedical applications, Polym. Degrad. Stab., 2020, 177,109187, https://doi.org/10.1016/j.polymdegradstab.2020.109187
    24. V. H. Shafeeq, G. Unnikrishnan, Experimental and theoretical evaluation of mechanical, thermal and morphological features of EVA-millable polyurethane blends, J. Polym. Res. 2020,27,
    25. K. Sunitha, P.B. Soumyamol, D. Mathew, G. Unnikrishnan, C. P. Reghunadhan Nair, Novolac-Polydimethyl Siloxane networks through click chemistry: Thermal and Thermophysical characterization, Int. J. Appl. Ceram. Technol. 2020, DOI: 10.1111/ijac.13472
    26. R. Sabarish, G. Unnikrishnan, A novel anionic surfactant as template for the development of hierarchical ZSM -5 zeolite and its catalytic performance, J. Porous Mater. 2020, 27(3) DOI: 10.1007/s10934-019-00852-5
    27. R. Rarima, G. Unnikrishnan, Porous poly(lactic acid)/nano-silver composite membranes for catalytic reduction of 4-nitrophenol, Mater. Chem. Phys. 2020, 241, 122389
    28. B. Satheesh Kumar, Balakondareddy Sana, G. Unnikrishnan, Tushar Jana,  K. S. Santhosh Kumar, Polybenzimidazole co-polymers: their synthesis, morphology and high temperature fuel cell membrane properties, Polym. Chem. 2020, 11, 1043-1054
    29. B. Satheesh Kumar, Sana, G. Unnikrishnan, T. Jana and K. S. Santhosh Kumar, Nano-ordered aromatic/alicyclic polybenzimidazole blend membranes, React. Funct. Polym. 2020,146, 104312
    30. P. G. Lashmi, N. Balaji, K. Anil Kumar, P. V. Ananthapadmanabhan, G. Unnikrishnan, S. Senthil Kumar and S. T. Aruna, Solution combustion synthesis of calcia-magnesia-aluminosilicate powder and its interaction with yttria-stabilized zirconia and co-doped yttria-stabilized zirconia, Ceram. Int.  2019, 45, 18255–18264
    31. K. V. Nishad, Manoj Komath and G. Unnikrishnan, Synthesis of strontium orthosilicate (Sr2SiO4) by sol-gel method for the use in endodontic cements to enhance bioactivity and radio-contrast, Mater. Res. Express 2019, 6, 105401-105412
    32. M. Vintu, G. Unnikrishnan, Indolocarbazole based polymer coated super adsorbent polyurethane sponges for oil/organic solvent removal, J. Environ. Manage. 2019, 248, 109344-109355
    33. S. Anitha, C. Suchithra, Nisha Balachandran, G. Unnikrishnan and K S. Santhosh Kumar, Hybrid poly (hydroxy urethane)s; folded sheet morphology and thermo-reversible adhesion, ACS Omega 2019, 4, 13042-13051.
    34. M. Vintu, Vijisha K. Rajan, G. Unnikrishnan and K. Muraleedharan, Suzuki coupling derived indolocarbazole based macromolecule as a solid phase/solution phase sensor for Hg2+: Experimental and theoretical explorations, Euro. Polym J. 2019, 114, 287–297.
    35. R. Sabarish, G. Unnikrishnan, Synthesis, characterization and evaluations of micro/mesoporous ZSM-5 zeolite using starch as bio template, SN Applied Sciences 2019, 1, 989.
    36. B. Satheesh Kumar, B. Sana, G. Unnikrishnan, Tushar Jana and K. S. Santhosh Kumar, Polybenzimidazole as proton conducting filler in polydimethylsiloxane: Enhanced oxidative stability and membrane properties, J. Appl. Polym. Sci. 2019, 136, 48151-48159.
    37. C. Sangeetha, G. Unnikrishnan. S. Thomas, S. S. Narine, Novel ethylene diamine functionalised nanocellulose/poly(ethylene-co-acrylic acid) composites for biomedical applications, Cellulose 2019, 26,1795-1809.
    38. M. Vintu and G. Unnikrishnan, Diode characteristics and metal ion sensing features of a conjugated macromolecular system based on indolocarbazole-thiophene, Materials Science and Engineering B 2018, 236, 170-178.
    39. M. Vintu, G. Unnikrishnan, E. Shiju, K. Chandrasekharan, Indolo[3,2-b]carbazole-based poly(arylene ethynylene)s through Sonogashira coupling for optoelectronic and sensing applications, J. Appl. Polym. Sci. 2018, 136, 46940.
    40. J. Janisha, G. Unnikrishnan, Novel membranes from physico-chemically modified deproteinized natural rubber latex development, characterization and drug permeation, New J. Chem. 2018, 42, 14179-14187.
    41. R. Sabarish, G. Unnikrishnan, Polyvinyl alcohol/carboxymethyl cellulose/ ZSM-5 zeolite biocomposite membranes for dye adsorption applications, Carbohydr. Polym. 2018, 199, 129-140.
    42. R. Sabarish, G. Unnikrishnan, PVA/PDADMAC/ZSM-5 zeolite hybrid matrix membranes for dye adsorption: Fabrication, characterization, adsorption, kinetics and antimicrobial properties, J. Environ. Chem. Eng. 2018, 6, 3860-3873
    43. B. Satheesh Kumar, Dona Mathew, G. Unnikrishnan, Tushar Jana, Santhosh kumar, Polybenzimidazole – nanocomposite membranes: Enhanced proton conductivity with low content of amine-functionalized nanoparticles, Polymer 2018, 145, 434-446.
    44. R. Rarima, R. Asaletha, G. Unnikrishnan, Schiff base-assisted surface patterning of polylactide–zinc oxide films: generation, characterization and biocompatibility evaluation,J. Mater. Sci. 2018, 53, 9943-9957.
    45. M. Bindu, G. Unnikrishnan, Modulation of dielectric and viscoelastic features of silicone rubber (SR) by nano-hydroxylapatite (n-HA) embedding, New J. Chem. 2018, 42, 6441-6448.
    46. R. Jose, H. B. Ravikumar, L. M. Munirathnamma, LityAlen Varghese, G. Unnikrishnan, Microstructural analysis of natural rubber/millable polyurethane blends using positron annihilation lifetime spectroscopy, Polym Plast Technol Eng. 2018, 57,196-205.
    47. S. Anitha, K.P. Vijayalakshmi, G. Unnikrishnan, Santhosh kumar, CO2 derived hydrogen bonding spacer: enhanced toughness, transparency, elongation and non-covalent interactions in epoxy-hydroxyurethane networks, J. Mater. Chem. A 2017, 5, 24299–24313. 
    48. J. Janisha, R. Alex, G. Unnikrishnan, Deproteinised natural rubber latex grafted poly(dimethylaminoethyl methacrylate) – poly(vinyl alcohol) blend membranes: Synthesis, properties and application, Int. J. Biol. Macromol. 2017, 107, 1821-1834
    49. K. Sunitha, S. Bhuvaneswari, Dona Mathew, G. Unnikrishnan, and C. P. Reghunadhan Nair, Comb polymer network of polydimethylsiloxane with a novolac stem: synthesis via click coupling and surface morphology architecturing by solvents, Macromolcules 2017, 50, 9656−9665
    50. K. Nimisha, G. Unnikrishnan, E. Shiju, K. Chandrasekharan, Investigation and fine-tuning of optoelectrical featuresof tertiary aminophenyl-activated poly(1,3,4-oxadiazole) conjugated system, Polym. Bull. 2017, 75, 3069–3087.
    51. M. Bindu, G. Unnikrishnan, Transport features of nano-hydroxylapatite (n-HA) embedded silicone rubber (SR) systems: Influence of SR/n-HA interaction, degree of reinforcement and morphology, Phys. Chem. Chem. Phys. 2017, 19, 25380-25390. 
    52. K.V. Nishad, S. Sureshbabu, Manoj Komath, G. Unnikrishnan, Synthesis and characterization of low dimensional bioactive monetite by solvent exchange method, Mater. Lett. 2017, 209, 19-22.
    53. R. Sabarish, G. Unnikrishnan, Synthesis, Characterization and Catalytic Activity of Hierarchical ZSM-5 Templated by Carboxymethyl Cellulose, Powder Technol. 2017, 320, 412–419.
    54. P.G. Lashmi, P.V. Ananthapadmanabhan, Y. Chakravarthy, G. Unnikrishnan, N. Balaji, S.T. Aruna, Hot corrosion studies on plasma sprayed bi-layered YSZ/La2Ce2O7 thermal barriercoating fabricated from synthesized powders, J Alloys Compd. 2017, 711, 355-364.
    55. M. Bindu, G. Unnikrishnan,A Gateway to Tune the Mechanical Properties and Surface Features of Silicone Rubber,Polym. Compos. 2017, 40, E35-E45.
    56. J. Jayadevan, R. Alex, G. Unnikrishnan, Chemically modified natural rubber latex-poly(vinyl alcohol) blend membranes for organic dye release, React. Funct. Polym. 2017, 112, 22-32.
    57. K. Nimisha, G. Unnikrishnan, E. Shiju, K. Chandrasekharan, Synthesis, characterization, and fine-tuning of optical properties of soluble p-conjugated system with nitrophenyl activated 1, 3, 4-oxadiazole unit, J. Mater. Sci.  2016, 51, 4748-4761.
    58. M. Bindu, J. Janisha, J. Hemalatha, G. Unnikrishnan, Molecular interactions in silicone rubber-nano hydroxyl apatite system in solution phase probed by ultrasonic technique,  J. Mol. Liq.2016, 221, 216-223.
    59. K. Nimisha, G. Unnikrishnan, Synthesis and evaluation of properties of poly(p-phenylvinylene) based 1, 3, 4-oxadiazole systems for optoelectronics and nonlinear optical applications,  Polym. Int. 2016, 65, 1221-1231.
    60. K. Nimisha, G. Unnikrishnan, E. Shiju, K. Chandrasekharan, Optoelectrical, morphological and mechanical features of nitrophenyl supported poly(1, 3, 4-oxadiazole)s and their nanocomposites with TiO2, RSC. Adv. 2016, 115132-115144.
    61. J. Janisha, G. Unnikrishnan, Modification of natural rubber latex by grafting, Rubber Sci. 2015, 28, 178-197.
    62. R.Puthiyottil, S. Varghese, G. Unnikrishnan, J. T. Guthrie,  Characterization of Europium complex doped PMMA and PMMA/EVA polymer networks, Polym. Plast. Technol. Eng. 2014, 11, 1111-1118.
    63. C. Sangeetha, G. Unnikrishnan, A. Sujith, S. Thomas, T. Francis, Cellulose nano-particles from pandanus: viscometric and crystallographic studies, Cellulose 2013, 20, 429-438.
    64. R. Puthiyottil, S. Varghese, G. Unnikrishnan, J. T. Guthrie, Optical properties of europium (2, 2¢-bipyridine- N, N-dioxide)2(NO3)3 complex doped poly(methylmethacrylate), Polym. Eng. Sci. 2013, 1, 119-124.
    65. R. Puthiyottil, S. Varghese, G. Unnikrishnan, J. T. Guthrie, Enhancing the fluorescence of a europium complex by co-doping with terbium, Plastic Research Online
    66. P. Kumari, G. Unnikrishnan, Thermal Properties of Compatibilized and
      Filled Natural Rubber/Acrylonitrile Butadiene Rubber Blends, J. Therm. Anal. Calorim. 2013, 114, 67-75.
    67. S. Mohammad Ali, G. Unnikrishnan, M. A. Joseph, Essential work of fracture of low-filled poly(methyl methacrylate)/starch composites, J. Appl. Polym. Sci. 2013, 128, 1409-1416.
    68. E. K.  Silviya, G. Unnikrishnan, S. Varghese, J. T. Guthrie, Surfactant effects on poly (ethylene-co-vinyl acetate) cellulose composites, Compos. Part B: Eng. 2013, 47, 137-144.
    69. S. Elanthikkal, G. Unnikrishnan S. Varghese, J. T. Guthrie, Tania Francis, Effect of cellulose whisker content on the properties of poly(ethylele-co-vinyl acetate) cellulose composites, Carbohy. Polym. 2013, 95, 773-779.
    70. E. K. Silviya, G. Unnikrishnan, S. Varghese, J. T. Guthrie, Thermal and Mechanical Characterization of EVA/Banana Fibre-Derived Cellulose Composites, J. App. Polym. Sci. 2012, 125, 786-792.
    71. P. A. Sreekumar, B.Agoudjil, A.Boudenne, G.Unnikrishnan, L. Ibos, M. Fois, S. Thomas, Transport   properties of polyester composite reinforced with treated sisal fibers, J.  Reinf. Plast. Compos. 2012, 31, 117-127.
    72. E. K. Silviya, G. Unnikrishnan, S. Varghese, J. T. Guthrie, Barrier Properties of  Poly(ethylene-co-vinyl acetate)/Cellulose Composite Membranes, Polym. Eng. Sci. 2012, 52, 2140-2146.
    73. P. A. Sreekumar, J.M. Saiter, Kuruvilla Joseph, G. Unnikrishnan, Sabu Thomas, Electrical Properties of Sisal Fibre Reinforced Polyester Composites Fabricated by Resin Transfer Moulding, Composite Part A:  Appl. Sci. Manufac. 2012, 43, 507-511.
    74. P. A. Sreekumar, K. Joseph, G. Unnikrishnan, S. Thomas, Surface modified sisal fiber reinforced eco-friendly composites: mechanical, thermal and diffusion studies, Polym. Compos. 2011, 32, 131-138.
    75. K.C. Manoj, Prajitha Kumari, Cure Characteristics, Swelling Behaviors, and Mechanical Properties of Carbon Black Filler Reinforced EPDM/NBR Blend System, J. Appl. Polym. Sci. 2011, 120, 2654-2662.
    76. P. A. Sreekumar, P. Selvin Thomas, J. M.Saiter, G. Unnikrishnan, S. Thomas, Viscoelastic and thermal properties of eco-friendly composites fabricated by resin transfer molding, J. Reinf. Plast. Comp. 2011, 30, 1509-1516.
    77. M. Minnath, G. Unnikrishnan, E. Purushothaman, Transport studies of thermoplastic polyurethane/natural rubber (TPU/NR) blends, J. Membr. Sci. 2011, 379, 361-369.
    78. P. Aneesh, Rosilda Selvin, G. Unnikrishnan, Hsiu-Ling Hsu, M. Bououdina, A facile method  for the fabrication of hierarchical porous nanocrystalline zeolite silicalite-1, Int. J. Mater. Eng. Innov.  2011, 2 30-37.
    79. S. Varma, Pao-Chi Chen, G. Unnikrishnan, Gas-liquid reactive crystallisation for the synthesis of CaCO3 nanocrystals, Mat. Chem. Phys. 2011, 126, 232-236.
    80. J.S.S Babu, K.P. Nair, G Unnikrishnan, C. G. Kang , Development of aluminum-based hybrid composites with graphite nanofibers/alumina short fibers: Processing and characterization, Journal of Composite Materials 2010, 44, 1929 – 1943
    81. S. George, P.Kumari, G. Unnikrishnan, Influence of static and dynamic crosslinking techniques on the transport properties of ethylene propylene diene monomer rubber/poly (ethylene-co-vinyl acetate) blends, J. Polym. Res. 2010, 17, 161-169.
    82. K. C. Manoj, P. Kumari, C. Rajesh, G. Unnikrishnan, Aromatic liquid transport through filled EPDM/NBR blends, J. Polym. Res. 2010, 17, 1-9.
    83. P.Dasan, K., G. Unnikrishnan, E. Purushothaman, Analysis of physical and solvent transport behavior of poly (ethylene-co-vinyl acetate) / silica composites, J. Rein. Plast. Comp. 2010, 29, 238-246.
    84. E. K. Silviya, G. Unnikrishnan, Soney Varghese and Guthrie J. T., Cellulose microfibers produced from banana plant wastes: isolation and characterization, Carbohydr. Polym. 2010, 80, 852-859.
    85. P. Kumari, C. K. Radhakrishnan., G. Unnikrishnan, S. Varghese S., and A. Sujith, Natural rubber/acrylonitrile butadiene rubber blend membranes: vapor permeation properties, Chem. Eng. Technol.  2010, 33, 97-102.
    86. R. Anil Kumar., K. T. Velayudhan., V. Ramachandran, R. Susheela Bhai, G. Unnikrishnan, K. Vasu, Adsorption and removal kinetics of phosphonate from water using natural adsorbents, Water Environ. Res. 2010, 82, 62-68
    87. K. P. Dasan, G. Unnikrishnan, E. Purushothaman, Cure, mechanical and solvent transport behaviour of filled poly(ethylene-co-vinyl acetate) composites, Polym. & Polym. Comp.  2009, 17 , 337-346.
    88. P.Kumari, K. C. Manoj, G. Unnikrishnan, Influence of carbon black on the fuel transport and mechanical characteristics of natural rubber /acrylonitrile butadiene rubber blends, Prog. Rubber, Plast. Recycling Technol. 2009, 25, 1-28.  
    89. S. George, P.Kumari, G. Unnikrishnan, Aliphatic liquid transport through heterogeneous ethylene-propylene-diene monomer rubber/ poly (ethylene-co- vinyl acetate blends, J. Elastomers Plast. 2009, 41, 65-85.
    90. T.M. Nair, M.G. Kumaran, G. Unnikrishnan, V. B. Pillai. Dynamic mechanical analysis of   ethylene propylene diene rubber/styrene butadiene rubber   blends. J. Appl. Polym. Sci. 2009, 112, 72-81.
    91. R. Anil Kumar, K. T. Velayudhan, V. Ramachandran, R. Susheela Bhai, G. Unnikrishnan, Vasu K, Translocation and distribution of 32P labeled potassium phosphonate in black pepper (Piper nigrum L), Crop Protection, 2009, 28, 878-881.
    92. P.A. Sreekumar, S.P. Thomas, J. M. Saiter, K. Joseph, G. Unnikrishnan, S. Thomas , Effect of fibre surface modification  on the mechanical and water sorption characteristics of sisal/polyester  composites fabricated by resin transfer moulding. Composites: Part A 2009, 40, 1777-1784.
    93. C. Rajesh, K.C. Manoj, E. Purushothaman, G. Unnikrishnan, Thermal characterization of short nylon-6 fibre reinforced NBR composites, Polym. Polym. Compos.2009, 17, 133-140.
    94. P. Kumari, K. C. Manoj, G. Unnikrishnan, Influence of carbon black on the fuel transport and mechanical characteristics of natural rubber/acrylonitrile butadiene rubber blends, Prog. Rubber, Plast. Recycling Technol. 2009, 25, 1-28.
    95. P.A. Sreekumar, R. Saiah, N. Saiter Leblanc, K. Joseph, G. Unnikrishnan, Sabu Thomas, Dynamic mechanical properties of sisal fibre   reinforced polyester composites fabricated by resin transfer moulding, Polym. Compos. 2009, 30, 768-775.
    96. A. Sujith, G. Unnikrishnan, Interaction of silica and carbon black fillers with natural rubber/poly(ethylene-co-vinyl acetate) blend matrix by swelling studies, Polym. Compos. 2007, 28, 705-712.
    97. T. M. Nair, M. G. Kumaran, G. Unnikrishnan, Ageing studies of ethylene propylene diene monomer rubber/styrene butadiene rubber blends: effects of heat, ozone, gamma radiation and water, J. Appl. Polym. Sci. 2008, 107, 2923-2929.
    98. A. Sujith, G. Unnikrishnan, Radhakrishnan, C.K, Sorption and mechanical properties of nitrile rubber compatibilized natural rubber/ poly (ethylene-co-vinyl acetate) blends, J. Elastomers Plast. 2008, 40, 17-38.
    99. P.A. Sreekumar, R. Saiah., J. M. Saiter, N Leblanc, K. Joseph, G. Unnikrishnan, S. Thomas, Effect of  chemical treatment on the dynamic mechanical properties of sisal fibre   reinforced polyester composites fabricated by resin transfer moulding, Compos. Interfaces 2008, 15, 263-279.
    100.  S. Anusree, A. Sujith, C.K. Radhakrishnan, G. Unnikrishnan, Organic vapor   permeation through natural rubber/poly(ethylene-co-vinyl acetate) blend membranes, Polym Eng. Sci. 2008, 48, 198-202.
    101.  K. Priya Dasan, G. Unnikrishnan, E. Purushothaman, Solvent transport through carbon black filled poly (ethylene-co-vinyl acetate) composites, Express Polym. Lett. 2008, 2, 382-390. 
    102.  C. Rajesh, Manoj K.C., G. Unnikrishnan, Purushothaman E. Investigation on ageing characteristics of short nylon-6 fibre reinforced NBR composites, Prog. Rubber, Plast. Recycling Technol. 2008, 24, 239- 253.
    103.  C. Rajesh, G. Unnikrishnan, Purushothaman E. Investigation of interfacial adhesion in nylon-6/NBR composites through restricted equilibrium swelling   technique, Compos. Interfaces 2008, 15, 527-548.
    104.  P. A. Sreekumar, R. Saiah , J.M. Saiter, N. Leblanc, K. Joseph, G. Unnikrishnan, Sabu Thomas, Thermal behavior of chemically treated and untreated sisal fibre reinforced  composites fabricated by resin transfer moulding, Compos. Interfaces 2008, 15, 629-650.
    105.  P. Kumari, C. K. Radhakrishnan, ,Shyla George, G. Unnikrishnan, Mechanical and sorption properties of polyethylene-co-vinyl acetate (EVA) compatibilized acrylonitrile butadiene rubber / natural rubber blend systems. J. Polym. Res. 2008, 15, 97-106.
    106.  C. K. Radhakrishnan, P. Kumari, A. Sujith,G. Unnikrishnan, Dynamic mechanical properties of styrene butadiene rubber/poly (ethylene-co-vinyl acetate) blends. J. Polym. Res. 2008, 15, 161-171.
    107.  P.A.Sreekumar, P. Albert, G. Unnikrishnan, Kuruvilla Joseph and Thomas S. Mechanical and water sorption studies of ecofriendly banana fibre reinforced polyester composites fabricated by RTM, J. Appl. Polym. Sci. 2008, 109, 1547-1555.
    108.  C. K Radhakrishnan, A. Sujith, G. Unnikrishnan, Thermal behaviour of styrene butadiene rubber/poly(ethylene-co-vinyl acetate) blends: TG and DSC analyses. J. Therm. Anal. Calorim. 2007, 90, 191-199. 
    109.  C.K. Radhakrishnan, M. Padmini, A. Sujith, G. Unnikrishnan, Compatibilization of heterogeneous styrene butadiene rubber/poly (ethylene-co-vinyl acetate) blends. Prog. Rubber, Plast. Recycling Technol. 2007, 23, 111-134.
    110. K.C Manoj, G. Unnikrishnan, Cure characteristics, morphology and mechanical properties of ethylene propylene diene monomer/acrylonitrile butadiene rubber blends, J. Appl. Polym. Sci. 2007, 105, 908-914.
    111. P.A.Sreekumar., K.Joseph, G. Unnikrishnan, S. Thomas, A comparative study on mechanical properties of sisal leaf fibre reinforced polyester composites prepared by resin transfer and compression moulding techniques, Compos. Sci. Technol. 2007, 67, 453-461.
    112. A.P. Haseena, G. Unnikrishnan, Kalaprasad G. Dielectric properties of short sisal/coir fibre reinforced natural rubber composites. Compos. Interfaces 2007, 14, 1-24.
    113. A. Sujith, G. Unnikrishnan, Molecular sorption by heterogeneous natural rubber/ethylene-co-vinyl acetate blend systems. J. Polym. Res. 2006, 13, 171-180.
    114.  A.K. Radhakrishnan, R. Alex, G. Unnikrishnan, Thermal, ozone and gamma ageing of styrene butadiene rubber and poly (ethylene-co-vinyl acetate) blends, Polym. Degrad. Stab. 2006, 91, 902-910.
    115.  M. Padmini, C.K. Radhakrishnan, A.Sujith, G. Unnikrishnan, E. Purushothaman, Transport and mechanical properties of styrene butadiene rubber/ethylene vinyl acetate blends, Prog. Rubber, Plast. Recycling Technol. 2006, 22, 69.
    116.  Ganesh, G. Unnikrishnan, Cure characteristics, morphology, mechanical properties and aging characteristics of silicone rubber/ethylene vinyl acetate blends. J. Appl. Polym. Sci. 2006, 99, 1069-1082.
    117.  M. Padmini, C. K. Radhakrishnan, A. Sujith, G. Unnikrishnan, E. Molecular transport of aliphatic hydrocarbons through styrene butadiene rubber/ethylene vinyl acetate blends. J. Appl. Polym. Sci. 2006, 101, 2884-2897.
    118.  B. Ganesh, G. Unnikrishnan, Chemical, water and thermal durability of silicone rubber/ethylene vinyl acetate blends, Mater. Res. Innov. 2006, 10, 305-320.
    119.  H. Rahiman, G. Unnikrishnan, The behaviour of styrene butadiene rubber/acrylonitrile butadiene rubber blends in the presence of chlorinated hydrocarbons. J. Polym. Res. 2006, 13, 297-314.
    120.  H. Rahiman, G. Unnikrishnan, A. Sujith,C. K. Radhakrishnan, Cure characteristics and mechanical properties of styrene butadiene rubber/acrylonitrile butadiene rubber . Mater. Lett. 2005, 59, 633-639.
    121.  K. Radhakrishnan, B. Ganesh, A. Sujith, G. Unnikrishnan, Sabu Thomas, Sorption of aromatic hydrocarbons into styrene butadiene rubber/ poly (ethylene-co-vinyl acetate) blends.  Polym. Polym. Compos. 2005, 13, 335-357.
    122.  A.P. Haseena, K. Priya Dasan, G. Unnikrishnan, Mechanical properties of sisal/coir hybrid fiber reinforced natural rubber. Prog. Rubber, Plast. Recycling Technol. 2005, 21, 155-181.
    123.  A. Sujith, G. Unnikrishnan, Barrier properties of natural rubber/ethylene vinyl acetate/carbon black composites. J. Mater. Sci. 2005, 40, 4625-4640. 
    124. R. Anil Kumar, K.T. Velayudhan, K. Vasu, V. Ramachandran, R. Susheela Bhai, G. Unnikrishnan, Interaction of potassium phosphonate fungicide in laterite soil,  J. Environ. Sci. Eng. 2005, 47, 276-285.
    125. C. Rajesh, G. Unnikrishnan, E. Purushothaman, Sabu Thomas, Cure Characteristics and Mechanical Properties of Short Nylon Fiber-Reinforced Nitrile Rubber Composites. J.  Appl. Polym. Sci. 2004, 92, 1023-1030.
    126. T. M. Nair, M.G.Kumaran,G. Unnikrishnan, Mechanical and ageing properties of cross-linked ethylene propylene diene rubber/styrene butadiene rubber blends. J. Appl. Polym. Sci. 2004, 93, 2606-2621.
    127. C. K. Radhakrishnan, A. Sujith, G. Unnikrishnan, Sabu Thomas, Effects of blend ratio and cross linking systems on the curing behaviour, morphology, and mechanical properties of styrene butadiene rubber and poly (ethylene-co-vinyl acetate) blends. J.Appl. Polym. Sci. 2004, 94, 827-837.
    128. K. Priya Dasan, A. P. Haseena, G. Unnikrishnan, E. Purushothaman, R. Alex, Transport characteristics of filled poly (ethylene-co-vinyl acetate) membranes. Polym. Polym. Compos. 2004, 12, 599-617.
    129. A.P. Haseena, PriyaDasan K., R. Namitha, G. Unnikrishnan, Sabu Thomas, Investigation on interfacial adhesion of short sisal/coir hybrid fibre reinforced natural rubber composites by restricted equilibrium swelling technique. Compos.  Interfaces 2004, 11, 489-513.
    130. A. Sujith, C. K. Radhakrishnan. G. Unnikrishnan, Sabu Thomas, Mass transfer characteristics of natural rubber/ethylene vinyl acetate blends, J. Appl. Polym. Sci. 2003, 90, 2691-2702.
    131. V.Sobha Nair, M. S. Sreekala, G. Unnikrishnan, T. Johnson, Sabu Thomas, Gabriel Groeninckx, The role of crosslinking and crystallization on the transport characteristics of ethylene-propylene rubber membranes, J. Membr. Sci. 2000, 177, 1-7.
    132. W.E. Rudzinski, J. Yin, T. Anderson, S, Norman, G. Unnikrishnan, J T varkey, S C George, S. Thomas, T M Aminabhavi, Preparation and evaluation of polyuretham foam/rubber membrane based samples for use in isocyanate sampling, Polym-Plast. Technol. Eng. 1998, 37, 103-113.
    133. G. Unnikrishnan, S. Thomas, Interaction of crosslinked natural rubber with chlorinated hydrocarbons, Polymer 1998, 39, 3933-3938.
    134. G. Unnikrishnan, P. H. Gedam, V. S. Kishanprasad, Sabu Thomas, Separation of n-hexane/acetone mixtures through natural rubber membranes, J. Appl. Polym. Sci. 1997, 64, 2597-2603.
    135. G. Unnikrishnan, S. Thomas, Siby Varghese, Sorption and diffusion of aliphatic hydrocarbons into crosslinked natural rubber, J. Polym. Sci. Part B, Polym. Phys. 1997, 35, 725-734.
    136. G. Unnikrishnan, S. Thomas, Molecular transport of benzene and methyl substituted benzenes into filled natural rubber sheets, J. Appl. Polym. Sci. 1996, 60, 963-970.
    137. G. Unnikrishnan, S. Thomas, Diffusion and transport of aromatic hydrocarbons through natural rubber, Polymer, 1994, 35, 5504-5510.

     

     

    Conferences

    1. Sujith A., G. Unnikrishnan, (3-7 January, 2002): Transport characteristics of natural rubber/ethylene vinyl acetate blends. 89th Indian Science Congress Association, Lucknow University, Lucknow, India.

    2. Priya Dasan K., G. Unnikrishnan, (1 & 2 December 2003): Diffusion characteristics of black filled poly(ethylene-co-vinyl acetate) membranes. Alchemy 2K3, N. S. S. College, Ottappalam, Kerala, India.

    3. Sujith A., G. Unnikrishnan, (1 & 2 December 2003): Transport and stress-strain properties of natural rubber ethylene vinyl acetate blends. Alchemy 2K3, N. S. S. College, Ottappalam, Kerala, India.

    4. Haseena A. P., G. Unnikrishnan, (15-17 March, 2004): Investigation of interfacial adhesion of sisal/coir hybrid fibre natural rubber composites; restricted equilibrium swelling technique. National Symbosium on Current Trends in Chemistry, CTIC-04, Department of Applied Chemistry, Cochin University of Science and Technology, Kerala, India, p-69.

    5. PriyaDasan K., G. Unnikrishnan, (15-17 March, 2004): Sorption characteristics of filled poly(ethylene-co-vinyl acetate) membranes with industrial liquids. National Symbosium on Current Trends in Chemistry, CTIC-04, Department of Applied Chemistry, Cochin University of Science and Technology, Kerala, India

    6. Sujith A., G. Unnikrishnan, (18 & 19 March, 2004):Permeation of chlorinated hydrocarbons through natural rubber/ethylene vinyl acetate blends: stress-strain properties, thermodynamics and theoretical modeling, Emerging Trends in Polymer Engineering, School of Technology and Applied Sciences, Mahatma Gandhi University, Kottayam, Kerala, India, P-66.

    7. PriyaDasan K., G. Unnikrishnan, (18 & 19 March, 2004): Transport characteristics of filled poly(ethylene-co-vinyl actate) membranes, Emerging Trends in Polymer Engineering, School of Technology and Applied Sciences, Mahatma Gandhi University, Kottayam, Kerala, India, P-25.

    8. Rajesh C., G. Unnikrishnan, E. Purushothaman, Sabu Thomas, (18 & 19 March, 2004): Mechanical properties of short nylon fiber reinforced nitrile rubber , Emerging Trends in Polymer Engineering, School of Technology and Applied Sciences, Mahatma Gandhi University, Kottayam, Kerala, India, P-25.

    9. Muraleedharan Nair T., Kumaran M. G., G. Unnikrishnan, (18 & 19 March, 2004): Mechanical, ageing and thermal degradation properties of crosslinked ethylene propylene diene rubber/styrene butadiene rubber blends, Emerging Trends in Polymer Engineering, School of Technology and Applied Sciences, Mahatma Gandhi University, Kottayam, Kerala, India, P-65.

    10. Sujith A., G. Unnikrishnan, (13 & 14 April 2004): Interaction of industrial liquids with natural rubber/ethylene vinyl acetate blends, Regional Conference for Young Chemists. University Sains Malaysia, Penang, Malaysia, P-43.

    11. Radhakrishnan C. K., G. Unnikrishnan, (13 & 14 April 2004): Cure characteristics and mechanical properties of styrene butadiene rubber/ethylene vinyl acetate blends, Regional Conference for Young Chemists. University SainsMalaysia, Penang, Malaysia, P-55

    12. Haseena A. P., G. Unnikrishnan, (13 & 14 April 2004): Development and characterization of short sisal/coir hybrid fibre reinforced natural rubber composites, Regional Conference for Young Chemists. University Sains Malaysia, Penang, Malaysia, P-39.

    13. PriyaDasan K., G. Unnikrishnan, (24-27 August, 2004): Kinetics and thermodynamics of solvent-transport in black filled poly(ethylene-co-vinyl acetate) membranes, 6th International Conference on Solvothermal Reactions, ICSTR-6, University of Mysore, Mysore, India, P-7.

    14. Sujith A., Radhakrishnan C. K., G. Unnikrishnan, (23 & 24 September, 2004); Effect of structure of penetrants on the transport characteristics of natural rubber/ethylene vinyl acetate blends, CRSYS-2004, IIT, Kharagpur, India, P-242.

    15. Haseena A. P., G. Unnikrishnan, (23 & 24 September, 2004): Studies on interfacial adhesion of short sisal/coir fibre reinforced natural rubber composites, CRSYS-2004, IIT, Kharagpur, India, P-199.

    16. Sujith A., B. Ganesh, Radhakrishnan C. K., G. Unnikrishnan, (13-17 December, 2004): Interaction of liquid fuels with carbon black filled natural rubber ethylene vinyl acetate blends. Macro-2004, Regional Research Laboratory, Thiruvananthapuram, Kerala, India, A-132.

    17. PriyaDasan K., E. Purushothaman, G. Uunikrishnan, (13-17 December, 2004): Mechanical and cure characteristics of nano clay filled poy(ethylene-co-vinyl acetate) membranes, Macro-2004, Regional Research Laboratory, Thiruvananthapuram, Kerala, India, A-136.

    18. B. Ganesh, Sujith A., GUnnikrishnan, (13-17 December, 2004): Analysis of cure characteristics and mechanical properties of silicone rubber/ethylene vinyl acetate blends for prosthetic applications, Macro-2004, Regional Research Laboratory, Thiruvananthapuram, Kerala, India, A-244.

    19. Haseena A. P., G. Unnikrishnan, (13-17 December, 2004): Studies on short sisal/coir hybrid fibre reinforced natural rubber composites: effect of fibre loading, orientation, ratio and chemical modification on bonding agent on mechanical properties, Macro-2004, Regional Research Laboratory, Thiruvananthapuram, Kerala, India, A-018.

    20. Sujith A., G. Unnikrishnan, (2 & 3 December, 2004): Non-porous natural rubber/ethylene vinyl acetate blend membranes, National Seminar on Recent Developments in Materials and Structures, REDEMAT-2004, National Institute of Technology, Calicut, Kerala, India, P-467.

    21. Ganesh B., G.  Unnikrishnan, (2 & 3 December, 2004): Physical characterization of silicon rubber/ethylene vinyl acetate blends, National Seminar on Recent Developments in Materials and Structures, REDEMAT-2004, National Institute of Technology, Calicut, Kerala, India.

    22. Ganesh B., G. Unnikrishnan, (1-7 January 2005): Silicon rubber/ethylene vinyl acetate blends for biomedical applications, 93rd Indian Science Congress, Hyderabad.

    23. Sreekumar P. A., G. Unnikrishnan, Sabu Thomas, (July 2005): Investigations on mechanical and water sorption properties of highly ecofriendly banana fibre reinforced polyester composites prepared by resin transfer moulding technique, National Conference on Science and Technology of Advanced Materials, PEC, Pondichery, Tamil Nadu, India.

    24. Ganesh B., G. Unnikrishnan, (3-7 January 2005), Morphology and transport properties of silicon rubber/ethylene vinyl acetate blends. Indian Science Congress-05, Nirma University, Ahmedabad, P-35.

    25. Ganesh B., G. Unnikrishnan (9 &10 March 2005): Effect of fillers and filler loading on the mechanical properties of silicon rubber/ethylene vinyl acetate blends. Recent Developments in Membrane Science & Technology (ReadMS-05), NSS College Nemmara, Palakkad, Kerala.

    26. Radakrishnan C. K., G. Unnikrishnan, (9 & 10 March 2005): Compatabilization of styrene butadiene rubber/poly(ethylene-co-vinyl acetate) blends, Recent Developments in Membrane Science & Technology (ReadMS-05), NSS College Nemmara, Palakkad, Kerala.

    27. Sujith A., G. Unnikrishnan, (9 & 10 March 2005): Analysis of the morphology of natural rubber/ethylene vinyl acetate blends by sorption and SEM analysis, Recent Developments in Membrane Science & Technology (ReadMS-05), NSS College Nemmara, Palakkad, Kerala.

    28. Haseena A. P., G. Unnikrishnan, (21-23 March 2005): Dielectric properties of short sisal/coir hybrid fibre reinforced natural rubber composites, International Conference on Advances in Polymer Blends, Composites, IPNS and Gels: Macro to Nano Scale (ICBS-05), School of Chemical Sciences, M. G. University, Kottayam, Kerala, P-31.

    29. Radhakrishnan C. K., G. Unnikrishnan, (21-23 March 2005): Ageing characteristics of styrene butadiene rubber/poly(ethyl-co-vinyl acetate) blends, International Conference on Advances in Polymer Blends, Composites, IPNS and Gels: Macro to Nano Scale (ICBS-05), School of Chemical Sciences, M. G. University, Kottayam, Kerala, P-179.

    30. Ganesh B., G. Unnikrishnan, (21-23 March 2005): Mechanical and ageing characteristics of white filler loaded silicon rubber/ethylene vinyl acetate blends, International Conference on Advances in Polymer Blends, Composites, IPNS and Gels: Macro to Nano Scale (ICBS-05), School of Chemical Sciences, M. G. University, Kottayam, Kerala.

    31. Ganesh B., G. Unnikrishnan, (July 2005): Advances in Biomedical Polymers, National Conference for Biomaterials, Amritha Institute of Medical Science, Cochin.

    32. HaseebRahiman K., G. Unnikrishnan, (29 & 30 November 2005): Dynamic mechanical properties of styrene butadiene rubber/acrylonitrile butadiene rubber blends, National Seminar on Emerging Trends and New Vista in Chemistry, Department of Chemistry, University of Calicut, Kerala, India, P-139.

    33. Rajesh C., G. Unnikrishnan, E. Purushothaman, (29 & 30 November 2005): Effects of fibre loading and curing system on the mechanical properties of nylon-6 fibre reinforced NBR composites, National Seminar on Emerging Trends and New Vista in Chemistry, Department of Chemistry, University of Calicut, Kerala, India, P-156.

    34. PriyaDasan K., G. Unnikrishnan, E. Purushothaman, (29 & 30 November 2005): Studies on the morphology of white filled EVA by diffusion studies, National Seminar on Emerging Trends and New Vista in Chemistry, Department of Chemistry, University of Calicut, Kerala, India, P-162.

    35. PrajithaKumari, G. Unnikrishnan, (29 & 30 November 2005): Compatibilizing effect of EVA in heterogeneous NBR/NR blends, National Seminar on Emerging Trends and New Vista in Chemistry, Department of Chemistry, University of Calicut, Kerala, India, P-180.

    36. Padmini M., G. Unnikrishnan, E. Purushothaman, (29 & 30 November 2005):  Effect of compatibilizers on the solvent uptake behaviour of styrene butadiene rubber/ethylene-co-vinyl acetate blends, National Seminar on Emerging Trends and New Vista in Chemistry, Department of Chemistry, University of Calicut, Kerala, India, P-186.

    37. PajithaKumari, G. Unnikrishnan (10th -12th August 2005): Molecular transport of substituted benzenes through chlorophenecompatibilized acrylonitrile butadienene rubber/natural rubber blends, National Conference on Recent Trends in Materials Science and Technology for sustainable developments, S. B. College, Kerala.

    38. Sreekumar P. A., G. Unnikrishnan, Sabu Thomas, (9 & 10 April 2005): Viscoeleasticbehaviour of sisal fibre reinforced polyester composites fabricated by resin transfer moulding, 4th ISAMPE National Conference on Composites (INCCOM-IV), AmrithaVishwaVidyapeetham, Coimbatore, Tamilnadu.

    39. Sreekumar P. A., G. Unnikrishnan, Sabu Thomas, ( 9th& 10th 2005): Water absorption properties of banana fibre reinforced polyester composites fabricated by resin transfer moulding, International Conferences on Science & Technology for Sustainable Developments, S. B. College, Kerala.

    40. Manoj K. C., G. Unnikrishnan, (29 & 30 November 2005): Mechanical properties of EPDM/NBR blends, National Seminar on Emerging Trends and New Vista in Chemistry, Department of Chemistry, University of Calicut, Kerala, India, P-187.

    41. Radhakrishnan C. K., G. Unnikrishnan, (15 & 16 March 2006): Diffusion of aromatic hydrocarbons through styrene butadiene rubber/poly(ethylene-co-vinyl acetate) blends, 3rd National Conference on Polymers (Polymer Blends and Composites), Department of Polymer Science & Technology, Sri. Jayachamarajendra College of Engineering, Mysore.

    42. SurajVarma, G. Unnikrishnan, (27-29 December 2006): Studies on coconut shell charcoal reinforced natural rubber composites, Silver Jubilee Conference of Indian Council of Chemists, Birla College, Kalyan, P-109.

    43. Manoj K. C., G. Unnikrishnan, (February 2006): workshops on novel trends in polymer composites, Bishop Moore College, Mavelikkara, Kerala.

    44. Manoj K. C., G. Unnikrishnan, (October 2006): 13th National Congress on Corrosion Control, National Corrosion Council of India, Karaikudi, CECRI, Karaikudi and NIT Karnataka, Surathkal, Mangalore.

    45. PrajithaKumari, G. Unnikrishnan, (1-7 January 2007): Molecular sorption of substituted benzenes by chloroprenes modified nitrile rubber/natural rubber blends, 93rd Indian Science Congress, P-116.

    46. Nebula Murukesh, G. Unnikrishnan, Vasu K., (29-31 January 2007): Water sorption properties of polyvinyl alcohol and poly vinyl alcohol starch films, 19th Kerala Science Congress, P-116.

    47. PrajithaKumari, G. Unnikrishnan, (22 & 23 February 2007): Sorption and mechanical properties of poly(ethylene-co-vinyl acetate) compatibilized nitrile rubber/natural rubber blends, Current Scenario in nanotechnology: The role of Chemistry, MAMO College, Mukkam, Calicut, P 67-80.

    48. Manoj K. C., G. Unnikrishnan, (22 & 23 February 2007): Dielectric properties of EPDM/NBR blends, Current Scenario in nanotechnology: The role of Chemistry, MAMO College, Mukkam, Calicut, P-51-67.

    49. Sreekumar P. A., Saiah R., Saiter J. M., Leblanc N., Joseph K., G. Unnikrishnan, Sabu Thomas, (22 & 23 February 2007): Thermal properties of sisal polyester composites fabricated by RTM, Current Scenario in nanotechnology: The role of Chemistry, MAMO College, Mukkam, Calicut.

    50. SurajVarma, G. Unnikrishnan, (Accepted for presenting during 27-30 December 2007): Coconut shell charcoal reinforced natural rubber composites, CHEMCON 2007 organized by Indian Institute of Chemical Engineers, Kolkata.

    51. PrajithaKumari, G. Unnikrishnan, (October 4th – 6th 2007): Influence of carbon black on the fuel transport of NR/NBR blends, International Conference on Polymeric Materials in Power Engineering, ICPMPE 2007, Central Power Research Institute (CPRI), Bangalore, India, P-83.

    52. Silviya E. K., PriyaDasan K., E. Purushothaman, G. Unnikrishnan, (October 4th – 6th, 2007): Characterization of nano filler reinforced poly(ethylene-co-vinyl acetate) composites, International Conference on Polymeric Materials in Power Engineering, ICPMPE 2007, Central Power Research Institute (CPRI), Bangalore, India, P-87.

    53. Manoj K. C., G. Unnikrishnan, (October 4th - 6th , 2007): Dynamic mechanical properties of EPDM/NBR blend systems, International Conference on Polymeric Materials in Power Engineering, ICPMPE 2007,  Central power Research institute (CPRI), Bangalore, Indi, P-82.

    54. PrajithaKumari, G. Unnikrishnan, (April 4th& 5th2008): Effects of carbon and silica fillers on natural rubber/acrylonitrile butadiene blends, National Symposium Polymers-Prospects and Challenges (POLYMSYM 08), NIT Calicut, India, P-48.

    55. Manoj K. C., G. Unnikrishnan, (April 4th& 5th 2008): Dynamic mechanical analysis of EPDM/NBR blends, National Symposium Polymers-Prospects and Challenges (POLYMSYM 08), NIT Calicut, India, P-47.

    56. Rajesh C., G. Unnikrishnan, E. Purushothaman, (April 4th& 5th 2008): Thermal ageing characteristics of short nylon-6 fibre reinforced NBR composites blends, National Symposium Polymers-Prospects and Challenges (POLYMSYM 08), NIT Calicut, India, P-49.

    57. Shyla George, PrajithaKumari, G. Unnikrishnan, (January 9th – 11th 2009): Influence of static and dynamic crosslinking techniques on the transport properties of EPDME/EVA blends, POLYMCON-09, International Conference on Polymers, NITC, India, p-337.

    58. Manoj K. C., G. Unnikrishnan, (January 9th – 11th 2009): Ageing characteristics of EPDM/NBR blends, POLYMCON-09, International Conference on Polymers, NITC, India, p-328.

    59. K. RajamannarSwamy, G. Unnikrishnan, (January 9th – 11th 2009): preparation and characterization of silicone rubber/ethylene propylene diene monomer blends, POLYMCON-09, International Conference on Polymers, NITC, India, p-246.

    60. Selvin R., PrajithaKumari,Hsiu-Ling Hsu, Jia-Wei Cao, Tze-Min Her, G. Unnikrishnan, (April 6th -8th 2009): Enhanced activity of nanocrystalline ZSM-5 for selective decomposition of cumenehydroperoxide into phenol and acetone, International Conference on nanostructured Materials and Nanocomposites, Kottayam, India.

    61. Francis T., Sujith A., G. Unnikrishnan, (November 19th -21st 2009): Crosslinkedpoly(vinylalcohol)/chitosan blend membranes: permeability and swelling properties, 6th National Symposium and Conferences on Solid State Chemistry and Allied Areas-2009.

    62. Francis T., Sujith A., G. Unnikrishnan, (January 3rd – 7th 2010): Crosslinkedpoly(vinylalcohol)/chitosan blend membranes: permeability and swelling properties, 97th Indian Science Congress, Thiruvananthapuram.

    63. Rafeeque P., Francis T., G. Unnikrishnan, (January 3rd – 7th 2010): Effect fillers on the thermal properties of blends of polyurethane waste with natural rubber, 97th Indian Science Congress, Thiruvananthapuram.

    64. Francis T., Sujith A., G. Unnikrishnan, (February 14th& 15th 2010): Thermal and mechanical studies on crosslinked poly(vinylalcohol)/chitosan blends, International Conference on Recent Trends in Materials and Characterization.

    65. Francis T., Rafeeque P., G. Unnikrishnan, (February 14th& 15th 2010): Effect of fillers on the mechanical properties of blends of polyurethane waste with natural rubber, International Conference on Advances in Polymer Technology, Cochin.

    66. Sangeetha C., G. Unnikrishnan, Sujith A, Tania Francis, (May9-12, 2012): Characterisation of liquid crystalline cellulose nanoparticles isolated from Pandanusutilis plant, International Conference on Materials,Energy and Enviornment, Toledo, USA.

    67. Sangeetha C., G. Unnikrishnan, (March 16-17, 2012): Electrospinning of Cellulosics to produce nanofibres and their applications, Advances in Material Science:Macro to nano scales, , U C College, Aluva, Kerala, India.

    68. R. Puthiyottil, S. Varghese, G. Unnikrishnan, J. T. Guthrie, (23 June 2012): National Conference on Recent Advances in Polymer Science and Technology, Mar Ivanios College Trivandrum.

    69. Sangeetha C., G. Unnikrishnan, Sabu Thomas, (February 8-10, 2013): Mechanical Properties Of Poly(Ethylene-Co-Acrylic Acid)/Cellulose Composites, Chennai Chemistry Conference, CLRI.

    70. Sangeetha C., G. Unnikrishnan, Sabu Thomas, Modeling studies of mechanical properties of poly(ethylene-co-acrylic acid)/pandanus cellulose composites, (January 2014): 26th Kerala Science Congress, Pookode, Wayanad.

    71. K. Nimisha, G. Unnikrishnan, Synthesis and Investigation of Optical Properties of Novel Conjugated  Polymer for OLEDs, (January 28-31, 2014 ): 26thKerala Science Congress, Wayanadu.

    72. K. Nimisha, G. Unnikrishnan, Novel p-Conjugated 1, 3, 4-Oxadiazole Systems for Optical Applications, (February 19-21, 2014): APA International Conference on ‘Polymers:  Vision and Innovations, Delhi.

    73. K. Nimisha, G. Unnikrishnan, (April 25 -26, 2014): Synthesis and Characterization of New p-Conjugated Polymers Containing 1, 3, 4-Oxadiazole Unit for Optical Applications, 6th National Conference-POLYCON-2014, Mysore.

    74. K. Nimisha, G. Unnikrishnan, (December 11-14, 2014): Novel PPV Derivatives Containing 1, 3, 4-Oxadiazole Unit for Optoelectronic Devices as Emissive Layers and Study of Antimicrobial Properties, ISRS-2014, IIT Madras.

    75. Renu Jose, LityAlen Varghese, G Unnikrishnan, (25- 26 April 2014): Morphology and Mechanical Properties of Millable Polyurethane-Natural Rubber Blend Systems, POLYCON 2014, SJCE-Mysore.

    76. Renu Jose, Lity Alen Varghese, G Unnikrishnan, (11-13 October 2014): Studies on the Effect of Silica Nanofillers on Polyurethane/Natural Rubber Blends: Morphology and Mechanical Properties, ICPPC 2014, M G University, Kottayam.

    77. Renu Jose, LityAlen Varghese, G Unnikrishnan, (11-13 December 2014): Mechanical and Morphological Analysis of Polyurethane -Natural Rubber Blend Fillled with Carbon Black, ISRS 2014, Indian Institute of Technology Madras.

    78. Vintu M., Sabarish R., G. Unnikrishnan, (25th – 26th April 2014): A facile dual template method for the synthesis of hierarchically porous ZSM-5 zeolite, National Conferences on Advances in Polymeric Materials.

    79. Sabarish R., G. Unnikrishnan, (19th – 21st February 2014): Synthesis, characterization and catalytic activity  studies of hierarchical ZSM-5 catalyst derived using macrotemplates, APA- International Conference on Polymers: Vision and Innovation.

    80. JanishaJayadevan, G. Unnikrishnan, 2014, Preparation and Characterisation of Poly(dimethylaminoethyl methacrylate) Grafted Natural Rubber (PDMAEMA- g- NR)/ Poly(vinylalcohol) (PVA) Blend Membranes, 6th  National Conference on Advances in Polymeric Materials (Energy, Enviornment& Health).

    81. K. Nimisha, G. Unnikrishnan, (January 27-29, 2015): Synthesis and Evaluation of Optical and Antimicrobial Properties of PPV-based 1, 3, 4-Oxadiazole Containing Novel Macromolecule, 27thKerala Science Congress, Alappuzha.

    82. Renu Jose, Lity Alen Varghese, G. Unnikrishnan, (January 27-29, 2015): Mechanical and Transport Properties of Millable  Polyurethane-Natural Rubber Blend Systems, 27thKerala Science Congress, Alappuzha.

    83. Janisha Jayadevan, G. Unnikrishnan, (January 23-26, 2015): Novel Blend Membranes from Natural Rubber Grafted Poly(dimethylaminoethyl methacrylate) and Poly(vinylalcohol), MACRO 2015, International Symposium on Polymer Science and Technology, held at Kolkata.

    84. Bindu M., G. Unnikrishnan, (10th -12th April 2015): Studies on silicone rubber- nano hydroxyl apatite composite systems, International Conference on Natural Polymers (ICNP- 2015) held at MG University Kottayam, Kerala.

    85. Sabarish  R., G. Unnikrishnan, (January 27-29, 2015): Introduction of micro/mesopority of ZSM-5 zeolite using polymer macrotemplates and evaluation of catalytic performance, 27thKerala Science Congress, Alappuzha.

    86. K. Nimisha, G. Unnikrishnan, (May 26-28, 2016): Facile Synthesis and Fine-tuning of Optical Properties of Tertiary Amine Based 1, 3, 4-Oxadiazole System, ICMAT-16, Mysore.

    87. K. Nimisha, G. Unnikrishnan, (February 25 & 26, 2016): Synthesis,Characetrization, and Investigation of Optoelectrical Properties of 1, 3, 4-Oxadiazole Systems as Emissive Layers in Optoelectronics and NLO Applications, International Conference on Advances in Polymer Technology, Cochin.

    88. M Vintu ., G. Unnikrishnan, (26-28 May 2016): Synthesis of Indolocarbazole based New Conjugated Polymeric Systems for Organic Electronics, ICMAT at Mysuru.

    89. JanishaJaydevan, Rosamma Alex, G.Unnikrishnan, (13th-15th May 2016): Organic Dye Release through Chemically Modified Natural Rubber- Poly (Vinyl Alcohol) Blend Membranes, International Conference on Macromolecules: Synthesis, Morphology, Processing, Structure, Properties and Applications (ICM-2016) held at M.G. University, Kottayam.

    90. Vintu M., G. Unnikrishnan, (8-11January 2017): Indolo[3,2-b]carbazole-based Poly(aryleneethynylene)s: Modulation of Their Optoelectronic Properties by Changing  Monomers, Macro at Udaysamudra organized by VSSC.

    91. Sabarish  R., G. Unnikrishnan, (Febriary 3 and 4th 2017): Fine tuning of the porosity of ZSM-5 zeolite using natural templates for accelerated catalysis, National seminar on current trends in chemistry (ctric-2017), Department of applied chemistry, CUSAT.

    92. Janisha Jaydevan, Rosamma Alex, G.Unnikrishnan, (8-11 January 2017): Studies on Novel Blend Membranes from Chemically Modified Natural Rubber Latex and Poly (vinyl alcohol), MACRO 2017, International Conference on Polymer Science and Technology held at Thiruvanthapuram.

    93. R. Rarima, G.Unnikrishnan, (15-16 September 2017),  Enhancement in fluorescent and thermal property of novel copper complexes by doping into PMMA film, 7th National conference on Novel polymeric materials,(POLYCON-2017)JSS Science and Technology University, Mysore

    94. M. Vintu, G. Unnikrishnan,(23-25 September 2017),Structural, electronic, and optical properties of a novel indolocarbazole-thiophene based conjugated polymer,EFCS, Ferookcollege

    95. Nimisha, G. Unnikrishnan, (23-25 September 2017), Optoelectronic properties of oxadiazole based polymers, EFCS 2018, Ferook college

    96. M. Vintu, G. Unnikrishnan, (28-30 January 2018), Conduction mechanism of a novel indolocarbazole-thiophene based conjugated polymer diode” in 30th Kerala Science Congress, Brennen college Thalassery

    97. R. Sabarish, G. Unnikrishnan, (28-30 January 2018),Synthesis of ZSM-5 Zeolite using surfactant as a mesoporous structuring agents and its catalytic activity studies, 30th Kerala Science Congress, Brennen College, Thalassery

    98. M. Bindu, G. Unnikrishnan,(28-30 January 2018),Silicone rubber/nano-hydroxylapatite system: A promising candidate for biomedical application, 30th Kerala Science Congress, Brennencollege, Thalassery

    99. M. Bindu,G. Unnikrishnan,(14 July 2018), Designing of nano-hydroxylapatite embedded silicone rubber composite- Correlation with biocompatibility aspects, International conference on composite materials, France

    100. J. Janisha,G. Unnikrishnan, (10-13 October 2018), Novel membranes from physic-chemically modified natural rubber latex membranes for transdermal drug delivery, International conference on recent trends in material science and technology (ICMST), IIST, Trivandrum

    About Dr. G. Unnikrishnan

    Dr Unnikrishnan is a Senior Professor in the Department of Chemistry of NIT Calicut. He received Ph. D. from M. G. University, Kottayam, Kerala State, India, with the thesis based on the transport characteristics of polymer membranes. He possesses experience, in academia and industries; in teaching, research and administrative domains.

    His current research interests include design and development of novel macro-molecular architectures, synthesis and characterization of pi-conjugated polymer systems, nano- materials, polymer blends for bio-medical applications, natural fibre reinforced composites, transport phenomena, polymer membranes, tribo-piezoelectric materials, novel catalysts for organic reactions and materials for physical medicine & rehabilitation.

    Dr Unnikrishnan supervised 32 Ph Ds. Five scholars are currently work in his group. He has authored 271 technical articles. He successfully completed 12 research projects funded by MHRD, DST, STEC, CSIR, British Council etc. Fiver patents (one awarded; 4 under processing) have been derived from his group. His group developed two inner liners for CTEV orthosis and Knight Taylor's Brace in association with Calicut Medical College, Kerala. He is a recipient of Prof. Sankarlal Memorial National Award (IIT Kharagpur) and Best Performer Award (NIT Calicut).

    He was a visiting researcher at the Department of Chemistry, University of Leeds, UK. He had combined research programmes with Lunghwa University, Taiwan. He has current collaborative programmes with different universities and institutes. His post-doctoral experience includes the assignment as an Environmental Specialist at Abu Dhabi, related to petroleum related operations.

    He is a Fellow of Royal Society of Chemistry ( FRSC). He is a Member of American Chemical Society(ACS), International Union of Pure and and Applied Chemistry (IUPAC), Materials Research Society of India (MRSI), and Indian Science Congress Association (ISCA).He is the Founder Secretary and current President of the Calicut Chapter of Society for Polymer Science (India) (SPSI).

    He served as the Coordinator of NIT Sikkim during 2011-2013. He was the Dean (SW) of NIT Calicut during Nov. 2015-Nov. 2018. He was also the Professor -in- charge of PG and doctoral programmes, Head of Department of Science and Humanities, Head of Department of Chemistry and Chief Warden of NIT Calicut. He was the Faculty-in- Charge of Social Engineering Forum, the vibrant technical platform connecting NIT Calicut with public. He is a consultant/mentor for the development of polymer and lubricant products. Two start-ups are currently being mentored by him.

    Recent Alumni

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    Training Programmes & Consultancy

    Innovation & Consultancy

    • Offers training programmes for polymer products’ development

    • Extends consultancy for rubber products’ development; particularly for domestic and automobile sectors

    Fields  of Specialisation

    • Bio-macromolecules

    • Nano- materials

    • Polymer blends for biomedical applications

    • Natural fibre reinforced composites

    • Nanocomposites

    Currently Mentoring Start -ups

    • Rubber Products Development (M/s Choice Rubbers, Calicut)

    • Car Polishing Compound Development (M/s Rahs Innovation Centre,TBI-NlTC)

    • Novel Adhesive Formulations (M/s . Hevea Organics, Calicut)

    List of Awards Received

    • UGC Research Fellowship (1992)

    • Prof. Shankarlal Memorial National Award [IIT Kharagpur] (1994)

    • Macro’94 Best Poster Award (1994)

    • Young Scientist Award, Indian Science Congress (1996)

    • Best Research Paper Award, NIT Calicut  (2005- 2006)

    • Best Performer Award, NIT Calicut (2010)

    • Best Doctoral Thesis Award by SPSI, Trivandrum, 2017 [Candidate: Dr Nimisha K.; Currently Asst. Researach Officer, Govt. Ayurveda College,Trivandrum)

    Projects & Patents

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    Current Research Group

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    Memberships

    • Fellow of Royal Society of Chemistry ( FRSC)

    • Member, American Chemical Society(ACS)

    • Member, International Union of Pure and and Applied Chemistry (IUPAC)

    • Member, Materials Research Society of India (MRSI)

    • Member, Indian Science Congress Association (ISCA)

    • Founder Secretary and Current President of the Calicut Chapter of Society for Polymer Science (India) (SPSI)

    Research Areas

    Design , development and characterisation of pi-conjugated macromolecules
    Pi conjugated  macromolecules are interesting candidates for many opto-electronic applications. Our group is interested in the development of different pi-conjugated systems and fine-tuning of their physico-chemical characteristics  by appropriate substitutions.  Typical programmes examine  the opto-electrical features of  1,3,4 oxadiazole and imidazole based  macromolecules.

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                    Poly(1, 3, 4-Oxadiazole) for Optoelectronics                     Indolocarbazole based Conjugated Polymeric
                  and  Nonlinear Optical Applications                                       Systems   for Organic Electronics

     

    Nanocomposites  for biomedical applications

    The focus of this part of our work is the  development and characterisation of   biocompatible,  efficient drug delivery  systems based on polymer nanocomposites   We try to modify the characteristics of polymers by using suitable nano-modifiers. Poly(lactic acid) modification by nanocellulose is a recent contribution from our group. An ultrasonic investigation of the interaction between silicone rubber and nanohydroxy apetite particles  is another recent work from this  area.

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    Poly(ethylene-co-acrylic acid)/Cellulose Composites

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    Ultrasonic investigation on  nanofiller- modified  silicone rubber  systems

    Blend membranes

    Chemical modification of biomacromolecules  and blending them with appropriate synthetic/ natural macromolecules for specific applications (typically drug release)  is another area of our interest . Of late , we reported the  modification of natural rubber latex (and its deproteinised version) with dimethyl aminoethyl methacrylate , using a redox initiator system  and subsequent blending with poly vinyl alcohol .  The properties such as hydrophilicity, film forming ability , resistance to oxidation  and adhesion have been found to be favourably modified through the strategies followed.

    We also try to investigate the cure, mechanical, thermal , ageing and transport features of blends modified by novel fillers    The filler type, loading and distribution within the matrix are being examined to characterise the systems for specific applications.

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    Blends: physico-chemical modifications

    Hierarchical zeolites for organic synthesis

    Conventional zeolites have pore sizes which restrict them from the catalysis involving. bigger molecules  We modify zeolites through suitable routes and cause pore enlargement which then can facilitate the anchoring of bigger molecules in their channels to execute catalysis faster.

    Zeolite modification by macrotemplates

    Modulation of macromolecular characteristics  by doping with inorganic complexes

    Many inorganic  complexes offer the opportunities for excellent  modulation of optical properties of macromolecules.  We synthesise different organic ligands, link them with suitable transition and inner transition metals and then  integrate them with macromolecules  for optical and electrical applications.

    Inorganic Complex Doped Polymer for optical applications

     

    Transport characteristics of membranes

    Under this area we try to develop novel membranes and characterise them in terms of kinetic and thermodynamic aspects. The flux and separation efficiency of the membranes are being evaluated.

     

     

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