PEG中FeCl_3/PPh_3催化MMA的A(R)GET ATRP  

A(R)GET ATRP of MMA in PEG Catalyzed by FeCl_3/PPh_3

作　　者：沈显荣[1] 陈梦婷[1] 

机构地区：[1]安徽工程大学生物与化学工程学院,安徽芜湖241000

出　　处：《安徽工程大学学报》2016年第5期13-17,共5页Journal of Anhui Polytechnic University

基　　金：安徽省高校自然科学基金资助项目(TSKJ2014B20)

摘　　要：以聚乙二醇(PEG)作为聚合介质、三氯化铁(FeCl3)/三苯基膦(PPh3)/维生素C(VC)为催化体系,研究了甲基丙烯酸甲酯(MMA)的电子活化再生原子转移自由基聚合(A(R)GET ATRP).聚合动力学研究以及聚合物的分子量和分子量分布表征结果都说明该催化体系下MMA的聚合具有良好的可控性,符合A(R)GET ATRP聚合特征.同时还研究了氧气、还原剂用量对聚合的影响,发现随着还原剂用量增加聚合速率加快,此外在未加还原剂的条件下,聚合体系仍符合活性聚合的特征.A（R）GET ATRP of MMA were conducted under PEG reaction medium, using an oxidatively stable FeCl3/PPh3 as a catalyst complex, ascorbic acid as a reducing agent. The well-controlled polymerization shows the features of ＂living＂/controlled free-radical polymerizations according to kinetic studies and polymer characteristics. The effects of oxygen and reducing agent dosage on the polymerization rate and controllability were investigated, the polymerization rate increased with the reducing agent, and the polymerization could be successively carried without external reductant.

关 键 词：原子转移自由基聚合 还原剂 铁催化剂 聚乙二醇 

分 类 号：O631[理学—高分子化学]