Kinetic Features of Elementary Events in the Radical Polymerization of Methyl Methacrylate under Conditions of Nitroxide-Mediated Reversible Inhibition

被引：2

作者：

Zaremski, M. Yu. ^{[1
]}

Odintsova, V. V. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119991, Russia

来源：

POLYMER SCIENCE SERIES B | 2020年 / 62卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

MODEL ALKOXYAMINES; DECOMPOSITION; COPOLYMERIZATION; TERMINATION; ACTIVATION; CONSTANTS; STYRENE; SYSTEMS; CHAINS;

D O I：

10.1134/S1560090420010121

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The kinetic features of the elementary events of initiation, reinitiation, and reversible termination in the radical polymerization of methyl methacrylate mediated by piperidine and imidazoline nitroxides are studied. The rate constants of these reactions and the constant of equilibrium between the dormant and growing chains are determined. In all the systems studied, the reinitiation rate constant and the equilibrium constant decrease during polymerization. The activity of imidazoline nitroxides in the termination reaction turns out to be an order of magnitude lower than that of piperidine ones, and the constant of interaction of both types of nitroxides with methyl methacrylate growing radicals is two and a half orders of magnitude lower than that with their low molecular weight counterparts.

引用

页码：1 / 13

页数：13

共 29 条

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