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本文分别研究了MoCl_2(n-C_8H_(17)O)_2-(i-Bu)_2Aloph体系,Fe(naph)_2-Al(i-Bu)_3-CH_2=CHCH_2Cl体系催化丁二烯聚合反应中聚合度与引发类型,聚合度与链转移的关系.建议用聚合度-时间曲线来决定是快引发还是慢引发,判断链转移反应的存在.对于慢引发非稳态聚合反应,提出选择准稳态来决定主要的链转移反应.并分别用图解积分法与等速比法处理数据,两种方法得到一致结果. 对等速比法的正确性从理论上进行了分析、采用链转移强度因子T_i表示向i组分转移的程度,并以比值φ_1=T_i/T表征第i种链转移剂的转移能力.
In this paper, we studied the polymerization of butadiene catalyzed by FeCl_2 (n-C_8H_ (17) O) _2- (i-Bu) _2Aloph system and Fe (naph) _2-Al (i-Bu) _3-CH_2 = CHCH_2Cl system Degree and type of initiation, degree of polymerization and chain transfer.It is suggested to determine whether the chain transfer reaction exists by using the polymerization degree-time curve.For the slow-onset unsteady polymerization, the choice of quasi-steady state To determine the main chain transfer reaction.And the data were processed by the graphic integral method and the constant velocity ratio method.The results of the two methods were consistent.The correctness of the equal velocity ratio method was theoretically analyzed.Using the chain transfer intensity factor T_i Indicates the degree of transfer to the i component, and the transfer ability of the ith chain transfer agent is characterized by the ratio φ_1 = T_i / T.