Effect of silane integrated sol–gel derived in situ silica on the properties of nitrile rubber. Issue 15 (18th February 2014)

• Record Type: Journal Article
• Authors: Kapgate, Bharat P.; Das, Chayan; Basu, Debdipta; Das, Amit; Heinrich, Gert; Reuter, Uta
• Is Part Of: Journal of applied polymer science. Volume 131:Issue 15(2014:Aug. 05)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2014-02-18
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.40531
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>Nitrile rubber/silica composites are prepared by a sol–gel process using tetraethoxysilane as precursor in the presence of γ‐mercaptopropyltrimethoxysilane as a silane coupling agent. Here, we follow a novel processing route where the silica particles are generated inside the rubber matrix before compounding with vulcanizing ingredients. The effect of <italic>in situ</italic> generated silanized silica on the properties of the rubber composite has been evaluated by studying curing characteristics, morphology, mechanical and dynamic mechanical properties. Enhanced rubber–filler interaction of these composites is revealed from stress–strain studies and dynamic mechanical analysis. Excessive use of silane shows an adverse effect on mechanical properties of the composites. Due to finer dispersed state of the <italic>in situ</italic> silica and enhanced rubber–filler interaction, the mechanical properties and thermal stability of the composites are improved compared to corresponding <italic>ex situ</italic> processed composite. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. <bold>2014</bold>, <italic>131</italic>, 40054.</p> </abstract>