【摘要】 在少量MN/bpy存在下,苯乙烯在稳定自由基TEMPO作用下的聚合,具有活性聚合特征.实验结果表明,摩尔比[MN]∶[TEMPO]=2.5∶1及[bpy]∶[TEMPO]=2∶1的混合添加剂,不仅能提高苯乙烯活性聚合速率,而且能精确地控制苯乙烯活性聚合的分子量.yh更多还原

【Abstract】 Styrene polymerization mediated by TEMPO was accelerated by the addition of malononitrile and 2,2′-bipyridine.The experimental data showed that when the molar ratio of bpy to TEMPO is 2∶1 and MN to TEMPO is 2.5∶1,the mixture not only enhanced the styrene polymerization rate,but also gave a better control on molecular weight.更多还原