Summary
The phenomenon of contraction of polyelectrolyte gels under the influence of direct current is studied experimentally. It is shown that the number of water molecules per one ion of the electric current is very large N 103. This effect can be explained as electroosmotic transport of water molecules through the gel, which can be represented as an effective fine-porous medium with the diameter of pores equal to the mesh size of a network.
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Starodoubtsev, S.G., Khokhlov, A.R. & Makhaeva, E.E. Electroosmotic transport of water in polyelectrolyte networks. Polymer Bulletin 25, 373–378 (1991). https://doi.org/10.1007/BF00316908
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DOI: https://doi.org/10.1007/BF00316908