JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Print ISSN : 0021-9592
Special Issue for the International Workshop on Process Intensification (IWPI) 2012
Enhancement of Dispersion of Silica Modified with a Silane Coupling Agent in a Rubber Composite
Gyu Min LeeJung Whan YooKi Bong Lee
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2014 Volume 47 Issue 2 Pages 159-164

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Abstract

Silica has been modified with decyltrimethoxysilane at various temperatures to improve the dispersion of the silica particles in a silica–rubber composite. The modified silica samples are characterized by FT-IR and 29Si CP/MAS NMR. With increasing treatment temperature, the chemical reaction between the silanol group of silica and the methoxy group of decyltrimethoxysilane is facilitated and the silica samples demonstrate very low water vapor adsorption capacities and good hydrophobicity compared to silica. The SBR rubber composite containing thermally modified silica shows improved silica particle dispersion. However, when physically mixed silica is used, the silica is mainly located on the surface and agglomerated.

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© 2014 The Society of Chemical Engineers, Japan
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