摘要
将甲基丙烯酸甲酯（ＭＭＡ）、苯乙烯（Ｓ）在氯化聚乙烯（ＣＰＥ）存在下进行悬浮接枝共聚，获得ＭＣＳ树脂。本文着重考察了ＭＣＳ树脂的化学结构及胶粒形态。结果表明，确实发生了接枝共聚。ＣＰＥ用量、ＲＳＨ含量、引发剂浓度、反应温度、溶胀时间及聚合转化率对ＭＣＳ树脂的接枝率、接枝效率均有影响。ＭＣＳ树脂是接枝共聚物、ＭＭＡ／Ｓ共聚物与ＭＭＡ均聚物的混合物，橡胶相ＣＰＥ在ＭＣＳ树脂中的分散情况为“海岛结构”，胶粒粒径为０．４～０．５μｍ，接枝型与共混型ＭＣＳ树脂的化学结构明显不同。
MCS resins can be synthesized by suspension swelling graft copolymerization of methyl methacrylate (MMA) and styrene onto chlorinated polyethylene. The structure and the rubber particle morphology were investigated . It showed that the graft copolymerization really took place. The content of CPE, RSH and initiator, reaction temperautre, swelling time, conversion all give influnces on the graft degree and the graft efficiency of MCS resins. MCS resins include the graft copolymer,copolymer of MMA and St, homopolymer of MMA.The dispersing sitations of CPE rubber in MCS resins were 'sea-island' structure. The diameter of the rubber particle was between 0.4￣ 0. 5 m. The chemical structure and the rubber particle morphology of graft-type resins are conspicuously different from the of mixed type resins.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1994年第3期55-61,共7页
Polymer Materials Science & Engineering
基金
国家自然科学基金
关键词
接枝共聚
热塑性树脂
结构
s: methyl methacrylate,styrene, chlorinated polyethylene, graft copolymer,morphology of rubber particle.
