TMEDA存在下的异戊二烯阴离子rn均聚合动力学研究

摘要

研究了以四甲基乙二胺(TMEDA)为调节剂体系的异戊二烯阴离子均聚合动力学。获得了不同n(TMEDA)∶n(Li)及聚合温度对动力学的影响情况。从理论上对聚合机理进行了推导和论证，并通过阿雷尼乌斯方程求得了不同反应条件下的聚合活化能。%Using N,N,N',N'-tetramethylethylenediamine(TMEDA) as polar additive,the kinetics of anionic polymerization of isoprene initiated with n-BuLi in cyclohexane was studied.The effects of TMEDA／Li(mole ratio) and reaction temperature on the polymerization rate were observed.The polymerization mechanism was investigated in theory and confirmed by experiments.The polymerization active energies in different conditions were obtained by Arrhenius equation.