Abstract
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 50°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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Original Russian Text © O.V. Borisova, M.Yu. Zaremskii, V.B. Golubev, A.V. Plutalova, O.V. Borisov, L. Billon, 2013, published in Russian in Vysokomolekulyarnye Soedineniya, Ser. B, 2013, Vol. 55, No. 9, pp. 1213–1220.
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Borisova, O.V., Zaremskii, M.Y., Golubev, V.B. et al. Determination of the rate constants of recombination of macroradicals and stable radicals via the competitive-inhibition method. Polym. Sci. Ser. B 55, 508–514 (2013). https://doi.org/10.1134/S1560090413080010
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DOI: https://doi.org/10.1134/S1560090413080010