Silane coupling agent and dispersion in silica nanocomposites
POSTER
Abstract
Dispersion of nano-silica in polybutadiene and SBR is of interest to the elastomer industry. Often, silane coupling agents are used for compatibilization. This is done by melt blending untreated precipitated silica, a coupling agent, and elastomer in a Brabender mixer. The coupling agent contains sulfur that can react with vinyl groups in the elastomers as well as ethoxy groups that can react with surface hydroxyl groups on silica. We have quantified the extent of these two reactions using IR spectroscopy, and quantified the dispersion using microscopy and small-angle x-ray scattering (SAXS). From SAXS we obtain the second virial coefficient which is used as a measure of dispersion.
Presenters
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Lahari Pallerla
University Of Cincinnati
Authors
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Lahari Pallerla
University Of Cincinnati
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Vanessa Manrique Ramirez
University Of Cincinnati
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Kabir Rishi
Chemical and Materials Engineering, University of Cincinnati, University Of Cincinnati, Dept. Chem. and Mat. Eng., University of Cincinnati, University of Cincinnati
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Greg Beaucage
Chemical and Materials Engineering, University of Cincinnati, University Of Cincinnati, Dept. Chem. and Mat. Eng., University of Cincinnati, University of Cincinnati
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Jan Ilavsky
Argonne National Lab, Argonne National Laboratory
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Ivan Kuzmenko
Argonne National Laboratory, Argonne National Lab, Advanced Photon Source, Argonne National Laboratory