基团转移活性聚合物的接枝共聚  

Graft Reaction of Living Polymer Obtained by Group Transfer Polymerization

作　　者：戴李宗[1] 傅暄[1] 周善康 邹友思[1] 潘容华 

机构地区：[1]厦门大学材料科学系

出　　处：《应用化学》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

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（ＰＳｔｇＰＭＭＡ）；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ＰＳｔｇＰＭＭＡ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.

关 键 词：基团转移聚合 PMMA PST 活性聚合物 接枝共聚物 

分 类 号：O632.13[理学—高分子化学] O632.52[理学—化学]