Abstract
Poly(vinyl alcohol) gel was prepared by γ-ray irradiation of an aqueous solution of the polymer and its swelling behavior in solutions of the alkali-metal and alkaline-earth-metal salts was investigated. The gel deswelled in solutions containing strongly hydrated anions and swelled in solutions containing strongly hydrated cations. The degree of swelling of the gel was in the following order: SO4 2−<Cl−<Br− ≅ NO3 −<I− for the anions and K+<Na+<Li+ and Sr2+<Ca2+<Mg2+ for the cations. These results were interpreted in terms of interactions between the polymer and the ions through the hydration layers.
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Received: 6 November 2000 Accepted: 24 May 2001
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Masuda, Y., Tanaka, T. & Nakanishi, T. Ion-specific swelling behavior of poly(vinyl alcohol) gel prepared by γ-ray irradiation. Colloid Polym Sci 279, 1241–1244 (2001). https://doi.org/10.1007/s003960100556
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DOI: https://doi.org/10.1007/s003960100556