【摘要】 本文采用阴离子聚合方法,以萘-锂和正丁基锂为引发剂,抽余油和环已烷为溶剂,四氢呋喃为极性添加剂,对产物聚丁二烯的微观结构进行了研究.根据本实验结果和分析整理大量文献数据后,提出了一个新的聚合反应机理,并在此基础上,作者用反应动力学和全概率理论,从不同角度分别推导出产物中1,2-结构含量和四氢呋喃浓度之间的同一定量关系式,最后还采用多组文献数据加以验证.更多还原

【Abstract】 By using a method of anionic polymerization, the micro-structure of polybutadiene was studied for naphthalene lithium and butyl lithium as initiators, extracted naphtha and cyclohexane as solvents, and THF as a polar additive. According to experimental data, the following mechanism of polymerization was proposed:CH2CH=CHCH2Li Based on the kinetics of the chemical reactions and the theory of total probability, a quantitative relation between the content of the 1, 2-struc-ture in the product(Bv) and the concentration of the tetrahydrofuran was deduced:where From literature data including Et2O as well as tetrahydrofuran as the polar additive, the above equation has been generalized to:where: P. A. is the concentration of the additive.更多还原