Modeling Asymmetry of a Current-Voltage Curve of a Novel MF-4SC/PTMSP Bilayer Membrane

• Published in: Membranes (Basel) Vol. 12; no. 1; p. 22
• Main Authors: Filippov, Anatoly N, Kononenko, Natalia A, Loza, Natalia V, Petrova, Daria A
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 24-12-2021; MDPI
• Subjects: Alzheimer's disease; Asymmetry; asymmetry of current–voltage curve; bilayer MF-4SC/PTMSP composite membrane; Cation exchanging; Contact angle; Electric fields; Electric potential; Electrolytes; Ethanol; Experiments; membrane sensors and diodes; Membranes; Microporosity; Microscopy; Polymers; Sodium chloride; Voltage; “fine porous membrane” model; United States > US; membrane sensors and diodes; asymmetry of current–voltage curve; “fine porous membrane” model; bilayer MF-4SC/PTMSP composite membrane
• ISSN: 2077-0375; 2077-0375
• DOI: 10.3390/membranes12010022

A novel bilayer cation-exchange membrane-consisting of a thick layer of a pristine perfluorinated membrane MF-4SC (Russian equivalent of Nafion
-117) and a thinner layer (1 μm) of the membrane, on a base of glassy polymer of internal microporosity poly(1-trimethylsilyl-1-propyne) (PTMSP)-was prepared and characterized. Using the physicochemical characteristics of one-layer membranes MF-4SC and PTMSP in 0.05 M HCl and NaCl solutions, the asymmetric current-voltage curves (CVC) of the bilayer composite were described with good accuracy up to the overlimiting regime, based on the "fine-porous membrane" model. The MF-4SC/PTMSP bilayer composite has a significant asymmetry of CVC that is promising for using it in electromembrane devices, such as membrane detectors, sensors, and diodes.