Determination of the rate constants of recombination of macroradicals and stable radicals via the competitive-inhibition method

被引：5
|
作者：
Borisova, O. V. [1 ,2 ]
Zaremskii, M. Yu. [1 ]
Golubev, V. B. [1 ]
Plutalova, A. V. [1 ]
Borisov, O. V. [2 ,3 ]
Billon, L. [2 ]
机构：
[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119991, Russia
[2] UPPA, CNRS UMR IPREM 5254, Equipe Phys & Chim Polymeres, F-64053 Pau 9, France
[3] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia
来源：
POLYMER SCIENCE SERIES B | 2013年 / 55卷 / 9-10期
基金：
俄罗斯基础研究基金会;
关键词：
NITROXIDE-MEDIATED POLYMERIZATION; CARBON-CENTERED RADICALS; O-BOND HOMOLYSIS; DORMANT CHAINS; ALKOXYAMINES; KINETICS; STYRENE; DECOMPOSITION;
D O I：
10.1134/S1560090413080010
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 rate constants of recombination, k (X), of propagating radicals with nitroxides in pseudoliving radical polymerization are determined via the competitive-inhibition method with the use of ESR spectroscopy. This method is applicable to determination of k (X) in the reactions of propagating radicals of styrene, acrylic acid, and methyl methacrylate with two stable radicals, the nitroxide diethylphosphono-2,2-dimethylpropyl nitroxide and the phenoxide galvinoxyl. The values of k (X) determined at 50A degrees C increase in the following sequence: diethylphosphono-2,2-dimethylpropyl nitroxide-TEMPO-galvinoxyl. The selectivity of the low-activity propagating radicals of styrene in reactions with stable radicals is shown.
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页码：508 / 514
页数：7
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