含氮类亲核试剂对TiCl_4/TMPCl/St阳离子聚合作用的研究  

RESEARCH OF NITROGEN CONTAINING NUCLEOPHILES ROLE ON MECHANISM OF POLYSTYRENE CARBOCATIONIC POLYMERIZATION

作　　者：唐卫华[1] 郭文莉[2] 武冠英[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京石油化工学院,北京102600

出　　处：《高分子材料科学与工程》2002年第6期58-61,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助课题

摘　　要：通过聚合物的 GPC谱图分析 ,证明了亲核试剂吡啶 ,N-甲基苯胺 ,防老剂和 E80 1作为电子对给体在 Ti Cl4 / TMPCl/ St阳离子聚合体系中 ,既能捕获质子 ,又能稳定活性增长中心 。The role of nitrogen containing nucleophiles such as Py, N-MPA, A-D, E801 as electron donors in TMPCl/TiCl 4/St cationic polymerization system was demonstrated by GPC traces. The effecting mechanism of nitrogen containing nucleophiles in styrene cationic polymerization was proposed: when the concentration of such electron donors was lower than a certain value, they acted as H + proton trappers; while, on the contrary they mainly stabilized living propagation center of the polymerization system. By comparison, E801 was the most effective electron donors among nitrogen containing nucleophiles, which was consistent with the result of computer simulation, and its effect on TMPCl/TiCl 4/St polymerization system was further investigated.

关 键 词：含氮类 亲核试剂 TiCl4/TMPC1/St 阳离子聚合 作用 研究 活性中心 电子对给体 吡啶 N-甲基苯胺 防老剂 E801 

分 类 号：TQ316.323[化学工程—高聚物工业] TQ314.24