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TMEDA存在下的异戊二烯阴离子均聚合动力学研究

Study on kinetics of anionic polymerization of isoprene in the presence of TMEDA

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【作者】 田福学张春庆曹民王润杨海涛方永刚

【Author】 TIAN Fu xue,ZHANG Chun qing,CAO Min,WANG Run,YANG Hai tao,FANG Yong gang (Dept.of Polym.Mater.,Dalian Univ.of Technol.,Dalian 116012,China)

【机构】 大连理工大学化工学院高分子材料系!辽宁大连116012大连理工大学化?

【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

【Abstract】 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.

  • 【分类号】O631.5
  • 【被引频次】1
  • 【下载频次】79
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