Preparation and Property Study of PMMA/ASA Alloy

Abstract:

Polymethyl methacrylate (PMMA)/ acrylonitrile-styrene-acrylate terpolymer (ASA) alloy was prepared via melt blending method. Effects of ASA melt flow rate and PMMA/ASA ratio on mechanical property of the alloy were studied. It showed that when the high melt flow rate ASA was used, alloy’s tensile strength and flexural strength were little different from using low melt flow rate ASA, while the impact strength was significantly higher than the latter. Differential scanning calorimetry (DSC) analysis showed that a glass transition (T_g) platform emerged in low melt flow rate ASA at 48.5°C, which represented the T_g of the interface phase formed between SAN grafted acrylate rubber particles and SAN matrix. Scanning electron microscope (SEM) experiment further showed that when low melt flow rate ASA was used, alloy’s cross section was smooth which showed the characteristics of brittle fracture.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 2383-2387
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.2383
• Online since: October 2011
• Authors: Guo Dong Tang, Si Chen, Yan Qin Shi, Xu Wang
• Keywords: Alloy, ASA, Melt Flow Rate, PMMA

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