ACPDA作为引发剂合成嵌段共聚物的研究

Study on Synthesis of Block Copolymer by Using ACPDA as an Initiator

以４，４’偶氮二〔４氰基戊酰（对二甲基氨基）苯胺〕（ＡＣＰＤＡ）为引发剂，先热分解引发甲基丙烯酸甲酯聚合，得到含有Ｎ，Ｎ二甲胺基端基的预聚物，它与ＢＰＯ组成氧化还原体系引发丙烯酰胺聚合后，得到聚甲基丙烯酸甲酯丙烯酰胺嵌段共聚物，研究了反应物组成及反应条件对嵌段共聚合反应的影响．结果表明在嵌段共聚物中，丙烯酰胺聚合物的含量随反应组成及反应条件而异，其含量可达５０％以上．

Block copolymer PMMA b PAAM was synthesized by using ACPDA as an initiator, which can initiate methyl methacrylate(MMA) to polymerize, after the obtained prepolymer N,N dimethyl amino and benzoyl peroxide(BPO) formed a redox system which initiated the polymerization of acrylamide(AAM). Moreover, effects of the composition of reactants and the reactive condition on copolymerization also were discussed. The results show that the amount of PAAM in PMMA b PAAM was more than 50 percent and altered with the composition of reactants and reactive condition.