摘要
在乙烯基聚合体系中,高分子化合物的存在将对聚合过程及反应机理产生不同程度的影响.我们曾以季胺型阴离子交换树脂负载五价钒氧离子在硝酸溶液中引发丙烯腈聚合,发现离子交换树脂对解离并酸化了的钒氧离子有强烈的束缚作用,改变了链引发和链终止过程.
The polymerization of methyl acrylate(MA) initiated by redox System composed of quinquevalent vanadium supported on quaternary ammonium anion exchange resin(PV) with thiourea (TU) was investigated in aqueous sulfuric acid medium.The over-all rate of polymerization(Rp) may be written at in Eq. (1) (see p.323). Based on these results,the initiation and termination mechanism for the polymerization were proposed and discussed.
基金
中国科学院自然科学基金
