乙烯基单体正离子聚合中链增长速率常数的研究进展

Propagation Rate Constants for the Cationic Polymerization of Vinyl Monomer

碳正离子聚合中,聚合速率常数的测定方法通常包括电导法、绝热量热法、胺抑制法、止流光谱法及扩散计时法。在烷基乙烯基醚、苯乙烯及其衍生物和异丁烯等几种常见乙烯基单体的正离子聚合中,本文介绍不同测定方法得到的不同结构碳正离子(包括自由离子和离子对)的链增长速率常数(kp+和kp±)。

The methods including conductivity, adiabatic calorimetry, amine retardation, stopped-flow spectroscopy and diffusion clock method were used to determine the propagation rate constants in cationic polymerization of vinyl monomers. The propagation rate constants （kp^＋ and kp^±） for carbocations including free ion and ion pairs with different chemical structure in the cationic polymerization of alkyl vinyl ether, isobutylene, styrene and its derivatives are introduced.