Abstract
AbstractIn this article, the anionic copolymerization of butadiene and styrene initiated by n‐BuLi/THF/t‐AmOK in cyclohexane at 50°C has been studied in detail. The various ratios of the modifier (THF and t‐AmOK) to the initiator (n‐BuLi) influence the copolymerization rate and composition of copolymers.It has been shown that this polymerization system is a complex one in which there exist multiple active species. By adjusting the ratio of K to Li and the ratio of THF to Li, copolymers with compositions almost identical to the ratio of initial monomers at different stages of conversion have been obtained.The propagating regularity of various active species has been discussed qualitatively.
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