助溶剂存在下的无皂乳液共聚合——反应动力学与反应机理  

SOAP-FREE EMULSION COPOLYMERIZATION IN PRESENCE OF COSOLVENT ——KINETICS AND MECHANISM

作　　者：纪庆绪 程时远[2] 李建宗[2] 

机构地区：[1]五三研究所,济南250033 [2]湖北大学

出　　处：《合成橡胶工业》1993年第5期289-293,共5页China Synthetic Rubber Industry

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.

关 键 词：助溶剂 共聚 甲基 丙烯酸甲酯 

分 类 号：O632.52[理学—高分子化学]