富马酸亚铁催化甲基丙烯酸甲酯活性自由基聚合的研究  

ATOM TRANSFER RADICAL POLYMERIZATION OF METHYL METHACRYLATE CATALYZED BY FERROUS FUMARATE

作　　者：李永胜[1] 刘文广[1] 姚康德[1] 

机构地区：[1]天津大学高分子材料研究所,天津300072

出　　处：《离子交换与吸附》2005年第1期82-86,共5页Ion Exchange and Adsorption

基　　金：国家自然科学基金(No. 59503005)

摘　　要：以畜马酸亚铁为催化剂,以2-溴代异丁酸乙酯为引发剂,在90℃下进行甲基丙烯酸甲酯的原子转移自由基本体聚合及溶液聚合.聚合物的数均相对分子质量随单体转化率的增加而线性增加,与时间呈良好线性关系,本体聚合时分子量分布(PDI)在1.5～1.7之间,溶液聚合时PDI＜1.5.通过聚合物扩链反应和端基分析,表明富马酸亚铁催化原子转移自由基聚合反应具有活性(可控)聚合的特征.A new catalyst, ferrous fumarate, was successfully used for atom transfer radical polymerization of Methyl methacrylate. The reaction was carried out at 90°C in bulk with ethyl 2-bromo-2-methylpropionate as the initiator. The molecular weight of the resulting polymer increases with increasing monomer conversion. The molecular weight distribution is relatively low (PDI=1.5-1.7), and the value of molecular weight detected is in good accordance with that of the calculated. Chain-extended reaction and analysis of polymer end group proved that ATRP of PMMA has the characteristics of living/controllable radical polymerization.

关 键 词：富马酸亚铁 原子转移自由基聚合 聚甲基丙烯酸甲酯 

分 类 号：O643.3[理学—物理化学]