摘要
在甲基丙烯酸甲酯(MMA)、丙烯酸正丁酯(BA)以及烯丙基磺酸钠(NaAS)组成的无皂乳液共聚体系中,加入CH_3OH作为助溶剂,反应速度随CH_3OH用量的增加经历了一个减小、增大、又减小的过程。与无CH_3OH存在时比较,反应仍按“均相”成核与“胶束”成核两种机理进行,但成核过程有一凝聚阶段。
Soap-free emulsion copolymerization of methyl methacrylate (MMA), butyl acrylate (BA)and sodium allyl sulfonate (NaAS) in the presence of cosolvent, methanol, were carried out. The results of kinetics and nucleation mechanism indicated that the reaction rate underwent a course of decreasing, increasing and decreasing with increasing methanol concentration. Com-pared with no presence of methanol, particles were similarly generated a conbination of homogeneous nucleation and micellar nucleation mechanism , but a limited coagulating period was found.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1993年第5期289-293,共5页
China Synthetic Rubber Industry
关键词
助溶剂
共聚
甲基
丙烯酸甲酯
cosolvent
soap-free emulsion copolymerization
kinetics
reaction mechanism
