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以正丁基锂为引发剂,在环己烷与四氢呋喃(THF)混合溶剂中,研究了温度对苯乙烯阴离子聚合动力学的影响。结果表明,增长反应对单体浓度呈一级关系;引发剂浓度服从以二缔体为主,单量体具有聚合活性为基础的非近似动力学方程式: 增长反应总的表观速度常数;单量体表现增长常数;解缔常数K_1随温度增加而下降。
The effect of temperature on the polymerization kinetics of styrene anions was studied using n-butyl lithium as initiator in a mixed solvent of cyclohexane and tetrahydrofuran (THF). The results show that the growth reaction has a first order relationship with the monomer concentration. The concentration of the initiator follows a non-approximate kinetic equation based on the association of the two monomers and the polymerization activity of the single ligand: the total apparent velocity constant of the growth reaction; Quantum performance growth constants; K_1 decay constant decreases with increasing temperature.