Abstract
The technique of preparing nonstoichiometric polyelectrolyte complexes of chitosan soluble in neutral solutions is developed. Chitosan complexes soluble in neutral solutions and meeting the behavioral criteria of water-soluble nonstoichiometric polyelectrolyte complexes are prepared via mixing of strongly acidic solutions of chitosan and polystyrenesulfonate anions taken in a nonequimolar charge-charge ratio and subsequent neutralization of the products by a solution of alkali. Thus, the region of existence of soluble complexes narrows with a decrease in the length of the host polyanion up to its full degeneration in the case of oligomeric anions. The critical concentration of a salt that brings about phase separation decreases with an increase in the relative content of the guest chitosan in a mixture and depends on the ratio of chain lengths of polymer components.
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Original Russian Text © M.Yu. Gorshkova, I.F. Volkova, V.A. Izumrudov, 2010, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2010, Vol. 52, No. 4, pp. 567–572.
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Gorshkova, M.Y., Volkova, I.F. & Izumrudov, V.A. Nonstoichiometric polyelectrolyte complexes of chitosan soluble in neutral solutions. Polym. Sci. Ser. A 52, 368–373 (2010). https://doi.org/10.1134/S0965545X10040048
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DOI: https://doi.org/10.1134/S0965545X10040048