摘要
利用原位~1H-NMR(400MHz)和^(13)C-NMR(100MHz)研究了环氧丙烷在TPPAlCl催化剂上开环聚合的动力学行为,包括反应级数、聚合反应速度常数、反应活化能以及活性中心数目、聚合物链的平均长度和聚合物的立规度等。 本方法的特点是原位、简单、快速和信息量丰富,是定性和定量分析及动力学研究的有效的现代测量方法之一。
In this paper the reaction kinetics of ring-opening polymerization of propylene oxide (PO) by using a catalyst of tetraphenylporphyring AlCl complex (TPPAlCl) has been studied by NMR at various temperatures, which includes reaction order, reaction rate constants, activation energy, number of active center, average length of polymer chains and polymer tac-ticity.The NMR method, which is simple and rapid, gives a wealth of real information. It can be applied to qualitative or quantitative analysis and is one of modern measuring methods in kinetic researcn.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1993年第4期456-462,共7页
Acta Polymerica Sinica
关键词
开环聚合
原位核磁
环氧丙烷
Ring-opening polymerization, NMR in-situ, PO, Kinetics of polymerization
