Influence of media polarity on the rate of activation of “dormant” chains in nitroxide‐mediated radical polymerization |
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| Authors: | Mikhail Zaremski Olga Borisova Chen Xin Vladimir B Golubev Laurent Billon |
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| Institution: | 1. Department of Polymer Science, Moscow State University, Leninskie Gory, Moscow 119191, Russia;2. UPPA, CNRS UMR 5254 IPREM Equipe de Physique et Chimie des Polymères, Pau, France |
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| Abstract: | 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. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 |
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| Keywords: | activation energy ESR/EPR kinetics (polym ) macroalkoxyamine decomposition nitroxide‐mediated polymerization rate constant solvent effect |
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