SUNIL KUTTY | Cochin University of Science and Technology (original) (raw)
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Papers by SUNIL KUTTY
Journal of Rubber Research, 2010
Sensors and Actuators A-physical, 2019
Sensors and Actuators A-physical, Sep 1, 2015
ABSTRACT
INFLIBNET, Jan 9, 2004
Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology
Research Square (Research Square), Apr 26, 2021
Progress in Organic Coatings, May 1, 2020
International Journal of Plastics Technology, Jan 13, 2017
Advanced Materials Research, Nov 9, 2021
Materials Science And Engineering: B, Oct 1, 2019
Progress in Organic Coatings, Dec 1, 2017
Journal of Applied Polymer Science
Silicon, 2022
Nanosilica was synthesized from a low cost raw material, olivine by a more sustainable and cost e... more Nanosilica was synthesized from a low cost raw material, olivine by a more sustainable and cost effective method. The pure nanosilica obtained was amorphous in nature with a surface area of 289 m2/g. TEM results showed a particle size between 9-15nm. These nanosilica particles aggregate to form a mesoporous material. The average pore width is found to be 13.4 nm. Green nanocomposites were prepared using the synthesized nanosilica and natural rubbers in a Thermo Haake internal mixer. Dynamic mechanical analysis was carried out to investigate the viscoelastic behaviour of the nano composites. Significant changes in viscoelastic properties were observed at a particular concentration, called the percolation threshold. This is due to the formation of a percolation network arising from the particle-particle interactions through H- bonding between the silanol groups. Nanosilica composites showed a rheological percolation at about 1.75 wt%. Significant improvement in mechanical properties were observed.
Journal of Scientific Research, 2020
Incorporating conducting polymer coated fibers in a nonconducting base polymer has proven to be a... more Incorporating conducting polymer coated fibers in a nonconducting base polymer has proven to be an effective method for the preparation of conducting composites. In the present work, banana fibers, cellulosic microfibers from waste biomass, were used for the coating of conducting polymer through in situ polymerization of thiophene on the fiber surface. The polythiophene (PTH) coated fibers were used as the conducting elements in a general-purpose thermoplastic, polypropylene (PP). The prepared composites were examined for electrical, thermal, mechanical, dynamic mechanical and dielectric properties. Formation of a continuous conducting network of PTH coated fibers in the polymer matrix imparted 6 fold increase in conductivity, 22 % improvement in tensile strength and 47% improvement in tensile modulus. Thermal degradation temperature of polypropylene was improved up to 26 oC. An exceptional improvement of more than 3 orders of magnitude in dielectric constant could be achieved for t...
Materials Today: Proceedings, 2022
Journal of Rubber Research, 2010
Sensors and Actuators A-physical, 2019
Sensors and Actuators A-physical, Sep 1, 2015
ABSTRACT
INFLIBNET, Jan 9, 2004
Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology
Research Square (Research Square), Apr 26, 2021
Progress in Organic Coatings, May 1, 2020
International Journal of Plastics Technology, Jan 13, 2017
Advanced Materials Research, Nov 9, 2021
Materials Science And Engineering: B, Oct 1, 2019
Progress in Organic Coatings, Dec 1, 2017
Journal of Applied Polymer Science
Silicon, 2022
Nanosilica was synthesized from a low cost raw material, olivine by a more sustainable and cost e... more Nanosilica was synthesized from a low cost raw material, olivine by a more sustainable and cost effective method. The pure nanosilica obtained was amorphous in nature with a surface area of 289 m2/g. TEM results showed a particle size between 9-15nm. These nanosilica particles aggregate to form a mesoporous material. The average pore width is found to be 13.4 nm. Green nanocomposites were prepared using the synthesized nanosilica and natural rubbers in a Thermo Haake internal mixer. Dynamic mechanical analysis was carried out to investigate the viscoelastic behaviour of the nano composites. Significant changes in viscoelastic properties were observed at a particular concentration, called the percolation threshold. This is due to the formation of a percolation network arising from the particle-particle interactions through H- bonding between the silanol groups. Nanosilica composites showed a rheological percolation at about 1.75 wt%. Significant improvement in mechanical properties were observed.
Journal of Scientific Research, 2020
Incorporating conducting polymer coated fibers in a nonconducting base polymer has proven to be a... more Incorporating conducting polymer coated fibers in a nonconducting base polymer has proven to be an effective method for the preparation of conducting composites. In the present work, banana fibers, cellulosic microfibers from waste biomass, were used for the coating of conducting polymer through in situ polymerization of thiophene on the fiber surface. The polythiophene (PTH) coated fibers were used as the conducting elements in a general-purpose thermoplastic, polypropylene (PP). The prepared composites were examined for electrical, thermal, mechanical, dynamic mechanical and dielectric properties. Formation of a continuous conducting network of PTH coated fibers in the polymer matrix imparted 6 fold increase in conductivity, 22 % improvement in tensile strength and 47% improvement in tensile modulus. Thermal degradation temperature of polypropylene was improved up to 26 oC. An exceptional improvement of more than 3 orders of magnitude in dielectric constant could be achieved for t...
Materials Today: Proceedings, 2022