標題: In situ compatibilized SAN/LCP blends through reactive copolymers
作者: Huang, JM
You, MF
Chang, FC
應用化學系
Department of Applied Chemistry
關鍵字: polymer blend;SAN;LCP;reactive compatibilizer
公開日期: 20-Dec-2001
摘要: Styrene-acrylonitrile-glycidyl methacrylate (SAG) copolymers with various contents of glycidyl methacrylate (GMA) were used to compatibilize the incompatible blends of styrene-acrylonitrile (SAN) and a liquid crystalline polymer (LCP). These SAG copolymers contain reactive glycidyl groups that are able to react with the carboxylic acid and/or hydroxyl end groups of the LCP to form the SAG-g-LCP copolymers during melt processing. The in situ-formed graft copolymers tend to reside along the interface to reduce the interfacial tension and to increase the interface adhesion. The morphologies of the SAN/LCP blends were examined by using scanning electron microscopy (SEM), where the compatibilized SAN/LCP blends were observed with greater numbers and finer fibrils than those of the corresponding uncompatibilized blends. The mechanical properties of the blends increased after compatibilization. The presence of a small amount (200 ppm) of ethyl triphenylphosphonium bromide (ETPB) catalyst further promotes the graft reaction and improves the compatibilization. (C) 2001 John Wiley & Sons, Inc.
URI: http://dx.doi.org/10.1002/app.2191
http://hdl.handle.net/11536/29181
ISSN: 0021-8995
DOI: 10.1002/app.2191
期刊: JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 82
Issue: 13
起始頁: 3321
結束頁: 3332
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