在离子型聚合中 ,活性中心是离子对 ,离子对间的距离越大 ,活性中心的活性越强 ,基于活性中心的这种特性 ,改变体系的极性就能改变活性中心的活性 .本文通过加入亲电试剂硝基苯达到了对抗衡离子产生溶剂化作用的效果 ,改变了两种单体的聚合速度 .同时还发现 ,活性中心的活性提高以后 ,对两种单体聚合速度的影响不同 ,本文详细地描述了这一过程 . In ionic polymerization, the active center is the ion pair, and the greater the distance between the ion pairs, the more active the active center. Based on this characteristic of the active center, changing the polarity of the system can change the active center activity. The addition of the electrophilic reagent nitrobenzene achieved the effect of solvating the counter ion and changing the polymerization rate of the two monomers, and also found that the influence of the polymerization rate of the two monomers was different after the activity of the active center was increased This article describes this process in detail.