The Effects of Polymer Properties and Solution Composition on the Distribution, Properties, and Amount of Water in Swollen Ion Exchangers


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Abstract

The effects of the composition and concentration of an external solution on the swelling degree of polystyrene-based ion exchangers crosslinked with different amounts of divinylbenzene have been analyzed within the heterophase model of polymer gel structure. It has been confirmed experimentally that, upon variations in the composition of the external solution, the swelling degree of polymers is determined by the content of “sorbed” water alone. Therewith, the volume of the external solution incorporated into the swollen polymer remains constant; i.e., it depends neither on an ionic form of an ion exchanger nor the concentration and composition of the external solution, but rather depends linearly on the polymer crosslinking degree. An algorithm has been proposed for calculating the volume of water in a polymer gel and some quantitative estimates have been presented.

About the authors

M. G. Tokmachev

Department of Physics

Author for correspondence.
Email: miket@mail.ru
Russian Federation, Moscow, 119991

N. B. Ferapontov

Department of Chemistry

Email: miket@mail.ru
Russian Federation, Moscow, 119991

I. O. Agapov

Department of Chemistry

Email: miket@mail.ru
Russian Federation, Moscow, 119991

Kh. T. Trobov

Department of Chemistry

Email: miket@mail.ru
Uzbekistan, Samarkand, 140104

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