D_4/APAEDMS本体共聚反应机理  

STUDY ON COPOLYMERIZATION MECHANISM OF D_4-APAEDMS

作　　者：罗正鸿[1] 詹晓力[1] 陈丰秋[1] 阳永荣[1] 

机构地区：[1]浙江大学化工系,浙江杭州310027

出　　处：《高分子材料科学与工程》2003年第3期116-118,122,共4页Polymer Materials Science & Engineering

摘　　要：通过八甲基环四硅氧烷 (D4) / N- β-氨乙基 - γ-氨丙基甲基二甲氧基硅烷 (APAEDMS)本体共聚合成氨基改性聚硅氧烷 ,考察了催化剂浓度及原料单体初始配比对该共聚反应的影响。研究发现 ,在实验范围内 ,D4/ APAEDMS本体共聚反应具有阴离子连锁聚合反应的一般特征 ,但又存在缩合聚合反应特征 ,其中两种单体的引发均是 KOH作用下形成相应的端羟基硅醇钾 。The factors including catalyst concentration and monomer ratio were investigated and copolymerization mechanism of octamethylcyclotetrasiloxane and amino monomer(APAEDMS) was confirmed basically in this study. The research indicated that the reaction rate is square relation of the initial catalyst concentration, and the reaction rate is close to bulk polymerization of octamethylcyclotetrasiloxane with the increasing of the mass rate of octamethylcyclotetrasiloxane and amino monomer. At last, the copolymerization mechanism that is between chain copolymerization and step copolymerization was suggested.

关 键 词：D4/APAEDMS 本体共聚 反应机理 八甲基环四硅氧烷 N-Β-氨乙基-Γ-氨丙基甲基二甲氧基硅烷 

分 类 号：TQ324.21[化学工程—合成树脂塑料工业] TQ316.342