Abstract
It is shown that swelling of an initially hydrophobic Nafion plate in a cell of limited volume follows a different way in ordinary water (deuterium concentration 157 ppm) and in deuterium-depleted water (deuterium concentration 1 ppm). Small variations in the deuterium concentration in water turn out to lead to a considerable difference in swelling dynamics of the polymer membrane. For a Nafion plate 175 µm thick, this effect is most distinct at the distance between the windows L = 200 µm.
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ACKNOWLEDGMENTS
The authors are grateful to A.V. Rubtsova for her help in preparing the manuscript.
Funding
This study was supported by the Russian Foundation for Basic Research, project no. 17-02-00214, MEPhI Academic Excellence Project, contract no. 02.a03.21.0005, and program 0024-2019-0004 “Physical methods in agriculture and ecology”.
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Translated by M. Potapov
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Bunkin, N.F., Kozlov, V.A., Kiryanova, M.S. et al. Rheological Effects of Polymer Membrane Swelling in Water and Their Dependence on Isotopic Composition. Phys. Wave Phen. 28, 182–186 (2020). https://doi.org/10.3103/S1541308X20020051
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DOI: https://doi.org/10.3103/S1541308X20020051