用n-BuLi和1,1-二苯基乙烯通过加成反应合成出聚丁二烯(PB),并分别以n-BuLi和DPHL为引发剂,SnCl4为偶联剂合成出普通星形溶聚丁苯橡胶(C-SSBR)和含改性基团的星形SSBR(T-SSBR)。结果表明,PB的链端引入了苯环,说明通过DPHL引发剂具有在星形SSBR分子链端引入改性基团二苯基烷基的可能性;T-SSBR具有高的抗湿滑性和低的滚动阻力,其拉伸强度、扯断伸长率、撕裂强度等性能比C-SSBR均更为优异。 Polybutadiene (PB) was synthesized by addition reaction with n-BuLi and 1,1-diphenylethylene, and n-BuLi and DPHL as initiator and SnCl4 as coupling agent were synthesized. Styrene-butadiene rubber (C-SSBR), and star-shaped SSBR (T-SSBR) with modified groups. The results showed that the benzene ring was introduced into the chain end of PB, which indicated that DPHL initiator had the possibility of introducing the modified group diphenylalkyl group into the star SSBR molecular chain end. T-SSBR had high wet skid resistance and Low rolling resistance, the tensile strength, elongation at break, tear strength and other properties are more excellent than the C-SSBR.