CuX/bpy催化体系中聚氧乙烯大单体与甲基丙烯酸甲酯接枝共聚物的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF POLY(ETHYLENE OXIDE) MACROMONOMER AND METHYL METHACRYLATE GRAFT-COPOLYMER IN CuX/bpy CATALYTICAL SYSTEM

作　　者：冯松[1] 李庆海[1] 杜宝辉[1] 沈良骏[1] 韩冬林[2] 

机构地区：[1]安徽师范大学有机化学研究所,安徽芜湖241000 [2]浙江大学高分子科学与工程研究所,浙江杭州310027

出　　处：《高分子材料科学与工程》2002年第4期98-100,104,共4页Polymer Materials Science & Engineering

基　　金：安徽省自然科学基金 (974 15 0 0 2 );安徽省高等学校科研基金 (98JL 14 2 )联合资助项目

摘　　要：以正丁基溴为引发剂 ,卤化亚铜 /联吡啶 (bpy)为催化剂 ,研究了甲基丙烯酸甲酯 (MMA)与末端为丙烯酰胺基的聚氧化乙烯 (PEO)大单体的原子转移自由基聚合 (ATRP)反应 ,得到的实测分子量与理论分子量相近 ,分子量分布较窄 ,有预期结构的接枝共聚物 ,用 IR、1H- NMR、VPO、GPC、DSC等进行表征 ,并对单体总浓度、投料比、引发剂及反应时间对共聚物的组成和分子量的影响进行了讨论。The bulk ATRP of MMA with PEO macromonomer having acrylamido and hydroxyl as end groups at 80 ℃ initiated by n BuBr/CuX(X=Br,Cl)/bpy was investigated in detail. The actual molecular weight of graft copolymer obtained was accordance with theoretic value and molecular distribution of the copolymer was narrow. The characteristic of Living radical polymerization could be observed. The effects of total monomers concentration, charging ratio of macromonomer to MMA, amount of initiator and reaction time on the composition and molecular weight of the graft copolymer were studied.

关 键 词：CuX/bpy催化体系 聚氧乙烯 大单体 甲基丙烯酸甲酯 接枝共聚物 合成 表征 转移自由基共聚 

分 类 号：O632.12[理学—高分子化学]