Abstract
The average size and number of water clusters inside ion-exchange membranes are calculated from experimental isotherms of water vapor sorption as a result of considering the sorption in terms of the clusterization theory. It is established that, in MK-40 heterogeneous cation-exchange membrane, water clusters are not formed, while, inside MF-4SK perfluorinated homogeneous membrane, intense cluster formation takes place. The effect of amino acid sorption on cluster water is considered. An increase in the membrane hydrophobicity as a result of the incorporation of amino acid ions leads to prevailing interaction of water molecules with one another rather than with the polymer phase, which is evident from an enlargement of water clusters.
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Original Russian Text © E.V. Krisilova, T.V. Eliseeva, G.Yu. Oros, 2011, published in Kolloidnyi Zhurnal, 2011, Vol. 73, No. 1, pp. 57–61.
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Krisilova, E.V., Eliseeva, T.V. & Oros, G.Y. Effect of amino acid sorption on formation of water clusters in ion-exchange membranes. Colloid J 73, 72–75 (2011). https://doi.org/10.1134/S1061933X11010091
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DOI: https://doi.org/10.1134/S1061933X11010091