Effect of pH on the Behavior of a Random Copolymer of Acrylamide


A temperature- and pH-sensitive random copolymer of N-[3-(diethylamino)propyl]-N-methylacrylamide] and N,N-diethylacrylamide was obtained. The copolymer contained 20 mol % of amine units and had a molecular weight of 3.3 × 104. Buffer solutions containing 0.0102 g/cm3 of the synthesized copolymer were studied in the pH range of 7–13.5 by light scattering and turbidimetry. At low temperatures, macromolecules and large aggregates coexist in the solutions. The copolymer is temperature- and pH-sensitive in the studied pH range. The temperature and the width of the phase separation interval increase with increasing acidity of the medium.

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Original Russian Text © N.V. Zakharova, M.A. Simonova, A.R. Khairullin, A.P. Filippov, E.N. Danilovtseva, S.N. Zelinskii, V.V. Annenkov, 2018, published in Vysokomolekulyarnye Soedineniya, Seriya A, 2018, Vol. 60, No. 2, pp. 102–109.

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Zakharova, N.V., Simonova, M.A., Khairullin, A.R. et al. Effect of pH on the Behavior of a Random Copolymer of Acrylamide. Polym. Sci. Ser. A 60, 127–133 (2018). https://doi.org/10.1134/S0965545X18020153

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