Influence of media polarity on the rate of activation of "dormant" chains in nitroxide-mediated radical polymerization

被引：16
作者：
Zaremski, Mikhail [1 ]
Borisova, Olga [1 ,2 ]
Xin, Chen [1 ]
Golubev, Vladimir B. [1 ]
Billon, Laurent [2 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Polymer Sci, Moscow 119191, Russia
[2] CNRS UMR 5254 IPREM Equipe Phys & Chim Polymeres, UPPA, Pau, France
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2012年 / 50卷 / 16期
关键词：
activation energy; ESR; EPR; kinetics (polym; macroalkoxyamine decomposition; nitroxide-mediated polymerization; rate constant; solvent effect; O-BOND HOMOLYSIS; RATE CONSTANTS; MODEL ALKOXYAMINES; STYRENE; KINETICS; DECOMPOSITION; MECHANISM; SOLVENT; SYSTEMS; LENGTH;
D O I：
10.1002/pola.26134
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Rate constants of decomposition of living polymeric adducts polystyrene (PS)-TEMPO, poly-4-vinylpyridine-TEMPO, PS-SG1, and polyacrylic acid-SG1 in different solvents were determined by the method of a competitive inhibition by means of electron spin resonance. It was found that with the increase in polarity of solvent, the values of constants become higher for all systems studied. This effect opens a new way of activating chains in nitroxide-mediated radical polymerization. (C) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
引用
收藏
页码：3437 / 3443
页数：7
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