聚苯乙烯微球分散聚合的研究

Duan Liu,Shi-hui Zhu,Dan Liu,Cheng-fu Zhen

GANSU SCIENCE AND TECHNOLOGY（2010）

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Abstract

系统研究了在苯乙烯(St)体系的分散聚合中,以聚乙烯基吡咯烷酮(PVP)为分散剂、偶氮二异丁腈(AIBN)为引发剂、甲醇为分散介质,制备的微米级单分散聚苯乙烯微球.结果表明,粒径随着反应温度、引发剂浓度、初始单体浓度的增加而增加;同时,它也随着分散剂(PVP)的浓度的增大而减小.当使用乙醇为聚合介质时,制得了粒径较大的单分散性微球(粒径为4.5μm),为由甲醇制得微球粒径的3倍,SPAN值达到0.785.

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