Transport Properties and Structure of Anisotropic Composites Based on Cation-Exchange Membranes and Polyaniline

Loza, N. V.; Kutenko, N. A.; Kononenko, N. A.; Volfkovich, Yu. M.; Сосенкин, В. Е.

doi:10.1134/s2517751623030058

Cited by 1 publication

(2 citation statements)

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“…The obtained concentration dependencies of the transport numbers of counterions in the membrane are shown in Figure 12. In the literature [99], the results of a study of MK-40/PANI composites obtained under similar conditions, but without an MF-4SK layer on a surface modified with PANI (MK-40/PANI-2 and MK-40/PANI-4), are presented. The specific conductivity of the MK-40/PANI-2 and MK-40/PANI-4 membranes in an NaCl solution remains comparable to the specific conductivity of the initial membrane.…”

Section: Selectivity Of the Bilayer Membranesmentioning

confidence: 99%

“…It has been shown that an increase in the time of PANI synthesis on the surface of heterogeneous membranes up to 4 h leads to a decrease in the proportion of macropores with an effective radius of more than 100 nm [99]. However, these changes do not strongly affect the specific electrical conductivity, diffusion permeability, and the shape of the CVC of the composites.…”

Section: Introductionmentioning

confidence: 99%

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Bilayer Heterogeneous Cation Exchange Membrane with Polyaniline Modified Homogeneous Layer: Preparation and Electrotransport Properties

Loza,

Falina,

Kutenko

et al. 2023

Membranes

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A bilayer membrane based on a heterogenous cation exchange membrane with a homogeneous cation exchange layer and a polyaniline on its surface is prepared. The intercalation of polyaniline into the membrane with a homogeneous cation exchange layer is performed by oxidative polymerization of aniline. The influence of the homogeneous cation exchange layer and the polyaniline on the structure, conductivity, diffusion permeability, selectivity, and current–voltage curve of the heterogeneous cation exchange membrane is established. Membrane properties are studied in the HCl, NaCl, and CaCl2 solutions. The homogeneous cation exchange layer has a negligible effect on the transport properties of the initial heterogeneous membrane. The polyaniline synthesis leads to a decrease in the macropore volume in the membrane structure, conductivity, and diffusion permeability. The counterion transport number in the bilayer membrane is significantly reduced in a solution of calcium chloride and practically does not change in sodium chloride and hydrochloric acid. In addition, the asymmetry of the diffusion permeability and shape of current–voltage curve depending on the orientation of the membrane surface to the flux of electrolyte or counterion are found.

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Section: Selectivity Of the Bilayer Membranesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%