Research Journal of Recent Sciences ________________________________________________ ISSN 2277-2502
Vol. 1 (ISC-2011), 357-360 (2012)
Res.J.Recent Sci.

Short Communication

Preparation and Studies of Nitrile Rubber Nanocomposites with
Silane Modified Silica Nanoparticles
Das Chayan and Kapgate Bharat P.
Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, INDIA

Available online at, www.isca.in
(Received 31th October 2011, revised 9th January 2012, accepted 28th January 2012)

Abstract
Rubber silica nanocomposites are prepared by mixing nitrile rubber (NBR) with surface modified silica nano particles. Silica nano
particles are synthesized by sol-gel method that involves hydrolysis followed by condensation of tetraethyl orthosilicate (TEOS).
Surface modification of silica particles is done with the treatment of silane coupling agent viz. 3-mercaptopropyltrimethoxysilane.
Presence of silane coupling agent in silica is revealed by IR studies. Thermogravimetric analysis is done to find out silica content
in the composites and to study the thermal properties. Stress strain studies are found to be useful to assess the improvement of the
mechanical properties of the composites.
Keywords: sol-gel, surface modification, rubber - silica nanocomposite.

References
1. Rao K.S., El-Hami K., T Kodaki T., Matsushige K. and
Makino K., A novel method for synthesis of silica
nanoparticles, Journal of Colloid and Interface Science
289, 125–131 (2005)
2. Ibrahim I.A.M., Zikry A.A.F., Sharaf M.A., Preparation
of spherical silica nanoparticles: Stober silica, Journal
of American Science, 6(11) (2010)
3. Zhou S., Wu L., Shen W., Gu G., Study on the
morphology and tribological properties of acrylic based
polyurethane/fumed silica composite coatings, J Mater
Sci, 39,1593 (2004)
4. Chen Y., Zhou S., Chen G., Wu L., Preparation and
characterization of polyester/silica nanocomposite
resins, Progress in Organic Coatings, 54, 120–126
(2005)
5. Stober W. and Fink A., Controlled Growth of
Monodisperse Silica Spheres in the Micron Size Range,
Journal of Colloid and Interface Science,26, 62-69
(1968)
6. Brinker C.J. and Scherer G.W. Sol–gel science, the
physics and chemistry of sol–gel processing, Academic
Press, New York (1990)
7. Ansarifara A., Azharb A., Ibrahima N., Shiaha S.F.,
Lawtonc J.M.D., The use of a silanized silica filler to
reinforce and crosslink natural rubber, International
Journal of Adhesion and Adhesives 25, 77–86 (2005)
8. Bassett D.R., Boucher E.A., Zettlemoyer A.C.,
Adsorption Studies on Hydrated and Dehydrated
Silicas, Journal of Colloid and Interface Science, 27,
649-958 (1968)
9. Zau H., Wu S., Shen J. Polymer/Silica nanocomposites:
Preparation, Characterization, Properties and
Applications, Chem. Rev., 108, 3893-3957 (2008)
10. Hui R., Yixin Q.U. and Suhe Z., Reinforcement of
Styrene-Butadiene Rubber with Silica Modified by
Silane Coupling Agents, Experimental and Theoretical
Chemistry Study, Chinese J. Chem. Eng., 14(1) 93—98
(2006)
11. Agostino A., Errico M.E., Malinconico M., Rosa M. D.,
Avella M. and Schiraldi C., Development of
nanocomposite based on hydroxyethylmethacrylate and
functionalized fumed silica: mechanical, chemico–
physical and biological characterization, J Mater Sci:
Mater Med 22, 481–490 (2011)
12. Lopattananon N., Jitkalong D. and Seadan M.,
Hybridized Reinforcement of Natural Rubber with
Silane-Modified Short Cellulose Fibers and Silica
Journal of Applied Polymer Science, 120, 3242–3254
(2011)
13. Rahman I.A., Jafarzadeh M., Sipaut C.S., Physical and
Optical properties of organo-modified silica
nanoparticles prepared by sol-gel, J Sol-Gel Sci
Technol, 59, 63-72 (2011)
14. Chaichua B., Prasassarakich P. and Poompradub S., In
situ silica reinforcement of natural rubber by sol–gel
process via rubber solution J Sol-Gel Sci Technol 52,
219–227 (2009)
15. Mahaling R.N., Jana G.K. and Das C.K., Carboxylated
Nitrile Elastomer/Filler Nanocomposites: Effect of
Silica Nanofiller in Thermal, Dynamic Mechanical
Behaviour and Interfacial Adhesion, Macromolecular
Research 13, 306-313 (2005)
16. Nasir M., Poh B.T., Ng P.S., Effect of γ-mercapto
propyl trimethoxysilane coupling agent on t90, tensile
strength and tear strength of silica-filled NR, NBR and
SBR vulcanizates, Eur. Polym. J, 24, 961-965 (1988)