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Journal of Materials Science
Published in: Journal of Materials Science 18/2014

01-09-2014

Controlling foam morphology of polystyrene via surface chemistry, size and concentration of nanosilica particles

Authors: Seyed Esmaeil Zakiyan, Mohamad Hossein Navid Famili, Mohammad Ako

Published in: Journal of Materials Science | Issue 18/2014

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Abstract

Controlling cell morphologies of polymeric foams is an important part of controlling foam properties. In this study, the effects of particle size, particle content, and particle surface chemistry on cell nucleation in nanosilica/polystyrene (PS) composites are investigated. A theoretical hypothesis on the effect of nanoparticle size on cell nucleation in PS matrix foam was examined. The surface chemistry of nanosilica particles was studied by modifying them with Vinyltriethoxysilane (VTES) silane coupling agent. The microcellular porous materials of neat and composite PS were prepared by batch foaming technique (pressure quench) using supercritical carbon dioxide (ScCO2) as a blowing agent. It was found that the size of the pores decreases and the cell density increases with the decrease in nanosilica size and the increase of silica loading. It was also observed that the surface treatment of the nanosilica particles have substantial effect on the decrease of the cell size and the increase of the cell density.
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Metadata
Title
Controlling foam morphology of polystyrene via surface chemistry, size and concentration of nanosilica particles
Authors
Seyed Esmaeil Zakiyan
Mohamad Hossein Navid Famili
Mohammad Ako
Publication date
01-09-2014
Publisher
Springer US
Published in
Journal of Materials Science / Issue 18/2014
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-014-8347-4

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