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以正丁基鋰为引发剂,环己烷为溶剂,研究了四氢呋喃(THF)对聚丁二烯和丁苯嵌段共聚物SBS中1,2-结构聚丁二烯含量的影响,指出在一定温度下,1,2-结构聚丁二烯的含量与体系中THF的浓度有指数关系。控制体系中THF的浓度和聚合反应温度,可调节聚合产物中1,2-结构聚丁二烯的含量。
The effect of THF on the content of 1,2-structure polybutadiene in polybutadiene and styrene-butadiene block copolymers SBS was studied using n-butyllithium as initiator and cyclohexane as solvent, At a certain temperature, the content of 1,2-structure polybutadiene has an exponential relationship with the concentration of THF in the system. The concentration of THF in the system and the polymerization temperature are controlled to adjust the content of 1,2-structure polybutadiene in the polymerization product.