二甲基 - 二苯基聚硅氧烷与二甲基 - 甲基乙烯基聚硅氧烷嵌段共聚研究  

STUDY ON THE BLOCK COPOLYMERIZAION OF POLYDIMETHYL DIPHENYLSILOXANE WITH POLYDIMETHYL-METHYLVINYLSILOXANE

作　　者：刘宗林[1] 郝树萱[1] 胡义 杜作栋[1] 

机构地区：[1]山东大学化学系

出　　处：《高分子材料科学与工程》1998年第3期23-25,29,共4页Polymer Materials Science & Engineering

基　　金：中国工程物理研究院科学技术资助

摘　　要：利用聚二甲基－二苯基硅氧烷二醇（Ａ）与聚二甲基－甲基乙烯基硅氧烷二醇（Ｂ），在辛酸己胺催化下缩合聚合、形成（ＡＢ）ｎ、（ＡＢ）ｎＡ及（ＢＡ）ｎＢ型嵌段共聚物。该类聚合物经１ＨＮＭＲ、ＵＶ、ＩＲ及特性粘数测定，研究了催化剂用量、反应时间及反应温度对分子量的影响。利用分步沉淀分级得出了分子量分布。Using hexylamine octoate as a catalyst,the condensation copolymerization of polydimethyldiphenylsiloxane diol(A) with polydimethylmethylvinylsiloxane diol(B) in toluene or dimethyl benzene led to block copolymers, (AB)n, (AB)nA, (BA)nB. The blockcopolymers obtained have been studied by 1HNMR, UV, IR and the intrinsic viscosity measurement. The effect of the amount of catalyst, reaction time, and reaction temperature on molecular weight have been studied. Progressive precipitation seperation has been used to study the molecular weight distribution.

关 键 词：聚合 聚二甲基 甲基乙烯基 硅氧烷二醇 嵌段共聚 

分 类 号：O631.5[理学—高分子化学] TQ316.344[理学—化学]