Comprehensive Revision of Rate Constants in Cationic Polymerization

本研究的重点是扩展扩散时钟方法，以确定异丁烯、苯乙烯和苯乙烯衍生物的活性聚合中增殖、电离（活化）和失活的速率常数作为溶剂、温度和催化剂的函数。这些速率常数的知识是在阳离子聚合物合成的整体控制的基础上，也对新催化剂的开发很重要。有了这个奖项，有机和大分子化学项目支持了马萨诸塞大学洛厄尔分校化学系Rudolf Faust博士的研究。浮士德教授的工作重点是确定阳离子聚合的绝对速率常数。这些研究将促进催化剂设计方面的新研究，从而导致生产更高效的聚合催化剂。

The focus of this research is to extend diffusion clock methods to determine the rate constant of propagation, ionization (activation) and deactivation in the living polymerization of isobutylene, styrene and styrene derivatives, as a function of solvent, temperature and catalyst. Knowledge of these rate constants is fundamental for overall control in cationic polymer synthesis and also important in new catalyst development.With this award, the Organic and Macromolecular Chemistry Program is supporting the research of Dr. Rudolf Faust in the Department of Chemistry at the University of Massachusetts, Lowell. Professor Faust will focus his work on determining the absolute rate constants in cationic polymerization. These studies will promote renewed research in catalyst design and thus lead to the production of more efficient polymerization catalysts.