KINETIC AND STRUCTURAL EPR STUDIES OF RADICAL POLYMERIZATION - MONOMER, DIMER, TRIMER AND MIDCHAIN RADICALS FORMED VIA THE INITIATION OF POLYMERIZATION OF ACRYLIC-ACID AND RELATED-COMPOUNDS WITH ELECTROPHILIC RADICALS (CENTER-DOT-OH,SO4 RADICAL-ION AND CL2 RADICAL-ION)

被引：57

作者：

GILBERT, BC ^{[1
]}

SMITH, JRL ^{[1
]}

MILNE, EC ^{[1
]}

WHITWOOD, AC ^{[1
]}

TAYLOR, P ^{[1
]}

机构：

[1] ICI PAINTS PLC,RES DEPT,SLOUGH,ENGLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1994年 / 08期

关键词：

D O I：

10.1039/p29940001759

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A continuous-flow system has been used in conjunction with EPR spectroscopy to study the initial stages of polymerization of acrylic acid and methacrylic acid in aqueous solution at pH 2 and 9, brought about with inorganic radicals (e.g. .OH) formed from metal-peroxide redox couples. Structural characteristics of monomer adduct-radicals, as well as corresponding dimers and trimers, are reported, together with evidence for rapid intramolecular hydrogen-abstraction of the appropriate tetramer to give a mid-chain radical. Computer-based simulation of steady-state concentrations leads to estimates of rate constants for initiation, propagation and termination reactions under these conditions.

引用

页码：1759 / 1769

页数：11

共 20 条

[1] PARAMAGNETIC RESONANCE OF ALKYL NITROXIDES [J].