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Vol. 23 No. 3 (2011): Vol 23 Issue 3

Impact Modification and Toughening of Polystyrene: Part-2. Blending with Medium and High Molecular Mass Elastomers

M. Davallo
Department of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 19136, Tehran, Iran
H. Pasdar
Department of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 19136, Tehran, Iran
M. Khosravi
Department of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 19136, Tehran, Iran

Corresponding Author(s) : M. Davallo

m_davallo@iau-tnb.ac.ir

Asian Journal of Chemistry, Vol. 23 No. 3 (2011): Vol 23 Issue 3

Abstract

The impact properties and morphology of polystyrene by blending with two types of thermoplastic elastomer [styrene-ethylene-propylene-styrene (SEPS)] with the same styrene content were studied to determine the effect of varying molar mass, percentage thermoplastic elastomer content and particle size on the PS/SEPS blends. The impact properties of PS/SEPS blends containing 10-40 % medium molar mass elastomers were found to be superior to those containing 10-40 % high molar mass elastomers with the phase morphology of the former blends show better distribution of rubber particles which are more spherical in shape with reduced size within the PS phase.

Keywords

Polystyrene Impact modification Rubber blends Morphology Elastomers Impact properties
Davallo, M., Pasdar, H., & Khosravi, M. (2010). Impact Modification and Toughening of Polystyrene: Part-2. Blending with Medium and High Molecular Mass Elastomers. Asian Journal of Chemistry, 23(3), 1158–1162. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/16123
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