Abstract
The possibility of modification of ion-exchange membranes with high pore and channel volumes and the effect of doping on the membrane properties have been studied. Hybrid membranes based on sulfonated polystyrene grafted onto polymethylpentene and cesium acid phosphotungstate have been synthesized by the in situ method. It has been shown that modification of these membranes leads to an increase in conductivity to 34.8 mS/cm at 25°С in contact with water. The chloride anion transport numbers for the original and modified membranes are about 4%.
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ACKNOWLEDGMENTS
This work was performed using the equipment of the Center for collective use for Physical Methods for Studying Substances and Materials of Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, which functions under the support of the state task to the institute in the field of basic research. The authors thank N.Yu. Tabachkova for recording TEM images.
Funding
This work was supported by the Russian Science Foundation (project no. 17-79-30054).
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Prikhno, I.A., Yaroslavtsev, A.B. & Golubenko, D.V. Effect of Modification with Cesium Acid Salt of Phosphotungstic Acid on the Properties of Membranes Based on Grafted Sulfonated Polystyrene. Membr. Membr. Technol. 1, 361–367 (2019). https://doi.org/10.1134/S2517751619060040
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DOI: https://doi.org/10.1134/S2517751619060040