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本文分别以四氢呋喃(THF)、二氧六环(DOX)和乙醚(Et_2O)三种路易氏碱作为丁二烯在环已烷中,以正丁基锂(n-BuLi)为引发剂进行阴离子聚合的添加剂.作者先用大量实验数据验证了前文中提出丁二烯阴离子聚合新机理的前提下,用反应动力学和全概率理论推导的聚丁二烯产物中1,2结构含量(Bv)与[THF]定量关系式的适用范围;然后在采用不同添加剂时,求得了在不同温度下相应的综合平衡常数K′和络合溶剂化指数n值;最后在上述实验基础上,作者提出了一个有关丁二烯阴离子聚合的普适性机理.
In this paper, three kinds of Lewis base of tetrahydrofuran (THF), dioxane (DOX) and diethyl ether (Et 2 O) were respectively used as butadiene in cyclohexane and n-BuLi as initiator Polymerization of additives.Using a large number of experimental data to verify the previous proposed butadiene anionic polymerization of the new mechanism under the premise of reaction kinetics and total probability theory derived polybutadiene product 1,2 structure content (Bv) And [THF], and then the corresponding total equilibrium constant K ’and the complex solvation index n at different temperatures were obtained when using different additives. Finally, based on the above experiments, the author proposed A universal mechanism for butadiene anionic polymerization.