摘要
以阴离子聚合法合成的窄分布聚苯乙烯（ＮＤＰＳ）进行氯甲基化后，再与由基团转移聚合法合成的活性聚甲基丙烯酸甲酯（ＰＭＭＡ）进行大分子反应，得到了主链为聚苯乙烯，支链为聚甲基丙烯酸甲酯的接枝共聚物（ＰＳｔｇＰＭＭＡ）；探讨了聚合物的合成条件，ＧＰＣ测试结果表明，得到的接枝共聚物的分子量和设计分子量相近且主链和支链分子量均可较好的控制．利用扫描电镜、核磁和红外技术对ＰＳｔｇＰＭＭＡ的形态、结构进行了表征．
Polystyrenegpolymethylmethacrylate(PStgPMMA) with controlled molecular weight and lower polydispersity was obtained through anionic polymerization, group transfer polymerization(GTP) and polymer reaction. First, polystyrene with narrow n distribution prepared by anionic polymerization was chloromethylated by methylal and sulfurylchloride to form chloromethylated polystyrene(CMPS), which was then dissolved in THF for purification by addition of naphthalene sodium and reacted with living PMMA prepared by GTP. Results showed that the grafting rate increased with increase of the chlorinity of CMPS and decreased with increase of the molecular weight of CMPS. The graft copolymer(PStgPMMA) was characterized and investigated by GPC, 1H NMR, FTIR and SEM.
出处
《应用化学》
CAS
CSCD
北大核心
1999年第2期14-17,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金
关键词
基团转移聚合
PMMA
PST
活性聚合物
接枝共聚物
group transfer polymerization,styrene,methylmethacrylate,living polymer,graft copolymerization
