Version 1
: Received: 22 July 2024 / Approved: 23 July 2024 / Online: 23 July 2024 (13:27:22 CEST)
How to cite:
Achoh, A.; Bondarev, D.; Melnikov, S.; Zabolotsky, V. Specific Permselectivity and Electrochemical Properties of Homogeneous Bilayer Membranes with Selective Layer Made of Dadmaс and Ema Copolymer. Preprints2024, 2024071781. https://doi.org/10.20944/preprints202407.1781.v1
Achoh, A.; Bondarev, D.; Melnikov, S.; Zabolotsky, V. Specific Permselectivity and Electrochemical Properties of Homogeneous Bilayer Membranes with Selective Layer Made of Dadmaс and Ema Copolymer. Preprints 2024, 2024071781. https://doi.org/10.20944/preprints202407.1781.v1
Achoh, A.; Bondarev, D.; Melnikov, S.; Zabolotsky, V. Specific Permselectivity and Electrochemical Properties of Homogeneous Bilayer Membranes with Selective Layer Made of Dadmaс and Ema Copolymer. Preprints2024, 2024071781. https://doi.org/10.20944/preprints202407.1781.v1
APA Style
Achoh, A., Bondarev, D., Melnikov, S., & Zabolotsky, V. (2024). Specific Permselectivity and Electrochemical Properties of Homogeneous Bilayer Membranes with Selective Layer Made of Dadmaс and Ema Copolymer. Preprints. https://doi.org/10.20944/preprints202407.1781.v1
Chicago/Turabian Style
Achoh, A., Stanislav Melnikov and Victor Zabolotsky. 2024 "Specific Permselectivity and Electrochemical Properties of Homogeneous Bilayer Membranes with Selective Layer Made of Dadmaс and Ema Copolymer" Preprints. https://doi.org/10.20944/preprints202407.1781.v1
Abstract
New homogeneous bilayer membranes with a thin anion-exchange layer have been developed based on the copolymer of N,N-diallyl-N,N-dimethylammonium chloride (DADMAC) and ethyl methacrylate (EMA) on the surface of a membrane substrate made from polyfluorosulfonic acid (PFSA). The overall and partial current-voltage characteristics, as well as external and internaldiffusion limiting currents, were theoretically and experimentally investigated. Parameters such as specific conductivity, sorption, and diffusion permeability of individual membrane layers were determined, along with effective transport numbers and specific permselectivity of the bilayer homogeneous membranes in mixed solutions of calcium chloride and sodium chloride. It was found that applying a thin anion-exchange layer of DADMAC and EMA to the homogeneous membrane allows for the creation of a charge-selective bilayer membrane with enhanced selectivity towards monovalent metal cations. The specific selectivity of the bilayer membrane for sodium cations increases more than 6-fold (from 0.8 to 4.8). Verification of the obtained experimental data was performed within a four-layer mathematical model with quasi-equilibrium boundary conditions for the diffusion layer (I)/modifying layer (II)/membrane substrate (III)/diffusion layer (IV) in ternary NaCl+CaCl2 solutions.
Keywords
ion-exchange membrane; bilayer membrane; current-voltage curve; specific permselectivity; modification; limiting current density
Subject
Chemistry and Materials Science, Electrochemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
