激光散射法研究支化大分子链增长行为  

THE PROPAGATION BEHAVIOR OF CHAIN BRANCHED ON COPOLYMERIZATION OF STYRENE WITH DIVINYLBENZENE BY LASER LIGHT SCATTERING

作　　者：陈天红[1] 左榘[1] 吴佩强[1] 郑容[1] 

机构地区：[1]南开大学化学系,北京大学化学系

出　　处：《高分子材料科学与工程》1995年第1期42-45,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金;天津市自然科学基金

摘　　要：通过用静、动态激光散射技术测定并讨论分子量（）随反应时间变化的定量关系式，并用分子尺寸（Ｒ＿ｇ、Ｒ＿ｈ）随反应的变化趋势，δ＝Ｒ＿ｇＲ＿ｈ随反应的指数变化规律及支化、多分散性对δ的影响来研究苯乙烯－二乙烯苯自由基交联共聚反应中支化大分子链的增长行为。The propagation behavior of chain branched during radical crosslinking copolymerization was monitored by means of both static and dynamic laser light scattering.The relationship on(1-Was discussed,here r=1.94.In the meantime,the evolution of molecular size(Rg,Rh)was detected.The exponential property of δ=Rg/Rh with time was investigated. The influence of branching and polydispersity on δ also was studied.

关 键 词：凝胶化 支化大分子 高聚物 激光散射 链结构 

分 类 号：O631.12[理学—高分子化学]