Technical Paper Archive

This site contains all papers presented at Rubber Division, ACS Technical Meetings from 2000-2018. Meetings prior to 2000 are incomplete and papers are added as they are digitized.

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Thermogravimetric Analysis of the Kinetics of the Reaction of Alkoxysilane with Silica


Event: 182nd Technical Meeting
Location: Cincinnati, OH
Date: October 09, 2012
Author: Yuk Yu Law* , Donald L. Feke and Ica Manas-Zloczower
Paper Number: C8

Price: $20.00

  • 9th Annual Student Colloquium & Poster Session.
    The surface functionalization of silica by alkoxysilane can improve its dispersion into polymers by beneficially modifying interparticle and particle-polymer interactions. Thermogravimetric analysis (TGA) has been used to study the kinetics of binding a bi-functional alkoxysilane onto silica over the temperature range of 50 to 1100C. Derivative TGA curves of the reacted silica show distinct peaks which correspond to the alkoxysilane bound to one or two surface silanol sites. Binding at two silanol sites is postulated to occur in a two-step series reaction model. An Arrhenius analysis for the alkoxysilane binding reactions shows that the activation energies of the two reaction steps are similar, which is expected since the alkoxysilane contains two identical binding groups. This work demonstrates the suitability of the TGA technique to investigate the reaction kinetics for modifying the surface of silica.

    Papers from 182nd Technical Meeting

    Items from 182nd Technical Meeting