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: | 20-十二月-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 |
顯示於類別: | 期刊論文 |