摘要
以双锂为引发剂、环己烷为溶剂,合成了对称型双端过渡态丁二烯/苯乙烯(B/S)嵌段共聚物S-(S/B)-B-(B/S)-S,并对其结构进行了研究。结果表明:随着S/B的增大、极性添加剂(2G)/Li的增加,嵌段共聚物中苯乙烯含量增加;嵌段共聚物具有微观相分离结构,分子量分布约为1.2。
The microstructure, the molecular weight and its distribution, the micro - phase separation structure of the symmetrical two - end tapered block copolymer of butadiene/styrene initiated by the dilithium initiator were studied in this paper.The results showed that the styrene content of the copolymer increased with the increasement of S/B and 2G/Li ratio. The block copolymer possessed the micro - phase separation structure and the distribution index of its molecular weight was near to 1.2.
出处
《合成树脂及塑料》
CAS
2000年第4期50-53,共4页
China Synthetic Resin and Plastics
关键词
丁二烯
苯乙烯
嵌段共聚物
双锂引发剂
结构
butadiene
styrene
block copolymer
dilithium initiator
structure
