ABSOLUTE RATE CONSTANTS FOR RADICAL-MONOMER REACTIONS - THE NITROXIDE METHOD

被引：72

作者：

MOAD, G ^{[1
]}

RIZZARDO, E ^{[1
]}

SOLOMON, DH ^{[1
]}

BECKWITH, ALJ ^{[1
]}

机构：

[1] AUSTRALIAN NATL UNIV, RES SCH CHEM, CANBERRA, ACT 2600, AUSTRALIA

来源：

POLYMER BULLETIN | 1992年 / 29卷 / 06期

关键词：

D O I：

10.1007/BF01041150

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A method is described for determining the absolute rate constants for the first few propagation steps in radical polymerization. The procedure involves a product analysis of the oligomeric alkoxyamines formed when an initiator is decomposed in monomer containing a very low concentration of a nitroxide radical scavenger. The method is illustrated with analysis of data for methyl acrylate. The rate constants for the first two propagation steps for polymerization of this monomer, k(p)(1) and k(p)(2), are at least an order of magnitude greater than k(p)(average). Values of the absolute rate constants for reactions of phenyl and primary alkyl radicals with methyl acrylate are also estimated.

引用

页码：647 / 652

页数：6

共 35 条

[1] KINETIC DATA FOR COUPLING OF PRIMARY ALKYL RADICALS WITH A STABLE NITROXIDE
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[9] KINETICS OF NITROXIDE RADICAL TRAPPING .2. STRUCTURAL EFFECTS
BOWRY, VW
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[10] INITIATION MECHANISMS IN RADICAL POLYMERIZATION - REACTION OF ISOPROPOXYL RADICALS WITH METHYL-METHACRYLATE
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