摘要
研究了以加氢汽油为溶剂、n-BuLi为引发剂、CS_2为调节剂的异戊二烯阴离子聚合的转化率和微观结构。实验表明,异戊二烯的聚合活性随n(CS_2)/n(Li)的增大和温度的升高先增大后减小。CS_2为温度敏感性调节剂,在高温下可破坏活性种活性。聚异戊二烯cis-1.4-结构的含量在加入CS_2后由91%降低到85%左右,并且随n(CS_2)/n(Li)的增大变化不大;无1.2-结构出现。
The conversion and microstructure of polyisoprene were studied using n-BuLi as initiator, benzene as solvent and CS2 as polar additive. The result showed： the conversion of the isoprene first increased and then decreased as n （CS2）/n（Li） and temperature increased. CS2 was sensitive to temperature and could destroy the reactivity of active species at high temperatures. The contents of cis-1,4-structure decreased from 91% to about 85% after the CS2 was added and there was no 1,2-structure.
出处
《合成技术及应用》
2008年第2期14-15,30,共3页
Synthetic Technology & Application
