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以一氯乙酸为引发剂 ,以FeCl2 ·4H2 O为新型催化剂 ,对苯乙烯进行了原子转移自由基聚合(ATRP) ,制得了含端羧基和端基氯的聚苯乙烯遥爪预聚物 ,并对聚苯乙烯与丙烯酸丁酯的嵌段共聚进行了研究 .结果表明 :利用ATRP技术可一步合成含端羧基和端基氯的聚苯乙烯遥爪预聚物 ,并可有效控制预聚物的相对分子质量及其相对分子质量分布 (1.3～ 1.6 ) ,预聚物的数均相对分子质量随单体转化率的提高而线性增加 ,ln([M ]0 / [M ])与时间呈线性关系 .表明该催化引发聚合反应具有活性可控聚合的特征 .
Using monochloroacetic acid as initiator and FeCl2 · 4H2O as a new catalyst, atom transfer radical polymerization (ATRP) of styrene was carried out to prepare polystyrene telechelic prepolymer with terminal carboxyl and terminal chlorine. And the block copolymerization of polystyrene and butyl acrylate was studied.The results show that the polystyrene-containing telechelic prepolymer with carboxyl end groups and terminal chlorine can be synthesized in one step by ATRP technology, and the prepolymer can be effectively controlled Relative molecular mass and its relative molecular weight distribution (1.3 ~ 1.6). The number average molecular weight of the prepolymer increased linearly with the monomer conversion. The ratio of ln ([M] 0 / [M] The linear relationship shows that the catalyzed polymerization has the characteristics of controlled polymerization.