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本文利用健谷勤动力学理论研究了M_0Cl_4OC_8H_(17)-i-Bu_2AlOPh体系在加氢汽油中催化丁二烯聚合过程中链的引发,增长和终止反应。本体系在30—40℃时基本属于快引发稳态逐步聚合;在50—70℃时,聚合反应初期有一暂短的稳态阶段,然后变为非稳态聚合。聚合物微观结构受转化率影响很小。链终止方式为单基终止, 在前两报中,我们研究了MoCl_4 OC_8H_(17)-i-Bu_2AlOPh催化体系在加氢汽油中催化丁二烯聚合的速度和链转移等问题。本文利用健谷勤动力学理论考察了该体系催化丁二烯聚合过程中链的引发增长和终止反应。
In this paper, the kinetic theory of Kudani was used to study the initiation, growth and termination of the chain catalysis of butadiene polymerized by M_0Cl_4OC_8H_ (17) -i-Bu_2AlOPh system in hydrogenated gasoline. The system at 30-40 ℃ basically belong to the rapid initiation of steady-state polymerization gradually; at 50-70 ℃, the initial polymerization has a short transient steady-state stage, and then into a non-steady-state polymerization. The microstructure of the polymer is less affected by the conversion rate. In the first two reports, we investigated the rate of catalysis of butadiene polymerization and chain transfer in a hydrogenated gasoline with MoCl_4 OC_8H_ (17) -i-Bu_2AlOPh catalyst system. In this paper, kinetic theory of Kudani was used to investigate the mechanism of chain initiation and termination during the polymerization of butadiene.