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在元素碘存在下,用衰减链转移聚合(DT)的方法合成以碘为端基的聚醋酸乙烯酯(PVAc-I),并以此为大分子引发剂,分别用三种不同的催化体系引发甲基丙烯酸甲酯的原子转移自由基聚合(ATRP),共聚过程符合ATRP机理,所得共聚物通过GPC和1H-NMR表征,证明是分子量分布较窄((-M)w/(-M)n=1.4~1.8)的二嵌段共聚物PVAc-b-PMMA.

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