CAJ | 학술논문

通过测定异丁烯的聚合产物聚异丁烯的末端结构，着重研究了BF3/醇、BF3/H2O和AlCl3/H2O催化剂体系对聚异丁烯的末端结构的影响。实验结果表明，BF3/醇配位催化剂体系聚合得到的聚异丁烯的末端结构主要是α-烯烃结构；而BF3/H2O和AlCl3/H2O体系聚合得到的聚异丁烯末端结构主要是β-烯烃结构。在BF3/醇催化剂中，当BF3与醇的摩尔比为1时，聚异丁烯的末端α-烯烃含量达到80%以上并且相对分子质量分布系数为2。
통과측정이정희적취합산물취이정희적말단결구，착중연구료BF3/순、BF3/H2O화AlCl3/H2O최화제체계대취이정희적말단결구적영향。실험결과표명，BF3/순배위최화제체계취합득도적취이정희적말단결구주요시α-희경결구；이BF3/H2O화AlCl3/H2O체계취합득도적취이정희말단결구주요시β-희경결구。재BF3/순최화제중，당BF3여순적마이비위1시，취이정희적말단α-희경함량체도80%이상병차상대분자질량분포계수위2。
The end-group structures of highly reactive polyisobutenes(PIB)prepared by three different catalyst systems of BF3/alcohole complex catalyst, BF3/H2O and AlCl3/H2O were studied by using FT-IR and　13C-NMR in an effort to understand the termination mechanisms in polymerization. Experimental results show that more than eighty percent of end-groups can be classified as the groups of α-olefin and relative molecular mass distribution is 2 when molar ratio of alcohol to BF3 is 1. In contrast,β-olefin is dominant in polyisobutenes produced with BF3/H2O or AlCl3/H2O catalysts.