Effect of nature of fibrous substrate of composite membranes on their structure, conductive properties, and selectivity

Кардаш, М. М.; Kononenko, N. A.; Fomenko, M. A.; Tyurin, I. A.; Ainetdinov, D. V.

doi:10.1134/s0965544116040046

Cited by 5 publications

(6 citation statements)

References 3 publications

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“…Kynol fabric from novolac phenolformaldehyde (NPF) fibers was used as a fibrous base [17]. Previously [18,19], we found that the selected fibrous base is promising because the material has necessary and sufficient thermal stability, and it is also resistant to aggressive media. Sulfo cation-exchange and polyfunctional anion-exchange regions were formed on the fibrous base; the initial total weight of the fragments was the same.…”

Section: Methodsmentioning

confidence: 99%

Effect of Structural Heterogeneity of Polikon Mosaic Materials on Their Properties

Терин

Кардаш

Druzhinina

et al. 2019

Membr. Membr. Technol.

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A unique method for producing Polikon cation-anion exchange mosaic materials has been proposed. The materials were prepared by the polycondensation filling of polymer composites and via synthesis and curing of a weakly basic anion exchanger and a strongly acidic sulfonated cation exchanger on the surface and in the structure of a fibrous novolac phenol-formaldehyde matrix. Molecular models that characterize the chemical composition of the developed composites are given. The effect of the composition that facilitates the formation of a material with stable performance characteristics has been studied. The cause-and-effect relationships of the structural, physicochemical, and operational properties of the heterogeneous cationanion-exchange mosaic materials Polikon under thermomechanical action at the stage of polymer matrix curing were investigated. Empirical equations that refine these relationships were obtained. The morphology and internal structure of the test heterogeneous membranes were characterized by scanning electron microscopy and energy-dispersive elemental analysis. The viscoelastic properties of the samples were studied by dynamic thermomechanical analysis.

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Section: Methodsmentioning

confidence: 99%

Effect of Structural Heterogeneity of Polikon Mosaic Materials on Their Properties

Терин

Кардаш

Druzhinina

et al. 2019

Membr. Membr. Technol.

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“…Comprehensive studies of the influence of the method of manufacturing a fibrous base on the properties of ion-exchange membranes have been carried out by the authors of articles [ 34 , 35 , 36 , 37 , 38 , 39 ]. In these studies, polyester fibers pretreated with low-temperature high-frequency plasma were proposed as the fibrous substrate of the membranes.…”

Section: Introductionmentioning

confidence: 99%

Anion-Exchange Membrane “Polikon A” Based on Polyester Fiber Fabric (Functionalized by Low-Temperature High-Frequency Plasma) with Oxidized Metal Nanoparticles

Terin,

Kardash,

Ainetdinov

et al. 2023

Membranes

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An experimental laboratory set of samples of composite heterogeneous anion-exchange membranes was obtained by us for the development of our original method of polycondensation filling. Anion-exchange membranes were prepared on plasma-treated and non-plasma-treated polyester fiber fabrics. The fabric was treated with low-temperature argon plasma at a power of 400 W for 10 min at a pressure of 5 × 10−5 mbar. On the surface and bulk of the polyester fiber, a polyfunctional anionite of mixed basicity was synthesized and formed. The anion-exchange membrane contained secondary and tertiary amino groups and quaternary ammonium groups, which were obtained from polyethylene polyamines and epichlorohydrins. At the stage of the chemical synthesis of the anion matrix, oxidized nanoparticles (~1.5 wt.%) of silicon, nickel, and iron were added to the monomerization composition. The use of ion-plasma processing of fibers in combination with the introduction of oxidized nanoparticles at the synthesis stage makes it possible to influence the speed and depth of the synthesis and curing processes; this changes the formation of the surface morphology and the internal structure of the ion-exchange polymer matrix, as well as the hydrophobic/hydrophilic balance and—as a result—the different operational characteristics of anion-exchange membranes.

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“…Such membranes are utilized in many electromembrane technologies such as the production of deionized water, conditioning of food products, and the creation of water recirculation systems in chemical industry. A characteristic feature of such membrane structural systems is the possibility to control the ratio of the functions of transport of salt ions and generation of dissociation products by varying the thickness of one of the layers constituting a bipolar membrane [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Application of Viscose Nonwoven Fabrics as a Fibrous Frame of Polykon Mosaic Membranes

Кардаш

Терин

2020

Membr. Membr. Technol.

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The possibility of using nonwoven fabric made of a viscose fiber to produce Polykon mosaic materials is demonstrated for the first time in this work. The materials are obtained by polycondensation filling of polymer composites, namely, by the synthesis and curing of a weakly basic anionite and a strongly acidic sulfo cationite on the surface and in the structure of a nonwoven material made of viscose fiber. The techniques and technological parameters of the production processes are discussed. The "transition from the cationite to the anionite" process scheme in combination with the optimum times of curing is selected. The effect of the composition of the "compound" on the properties of mosaic materials is investigated. A comparative analysis of the obtained materials with Polykon mosaic materials based on a novolac phenol formaldehyde fibrous matrix is performed. The thermal stability and physical and mechanical properties of the mosaic membranes are studied.

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Effect of nature of fibrous substrate of composite membranes on their structure, conductive properties, and selectivity

Cited by 5 publications

References 3 publications

Effect of Structural Heterogeneity of Polikon Mosaic Materials on Their Properties

Effect of Structural Heterogeneity of Polikon Mosaic Materials on Their Properties

Anion-Exchange Membrane “Polikon A” Based on Polyester Fiber Fabric (Functionalized by Low-Temperature High-Frequency Plasma) with Oxidized Metal Nanoparticles

Application of Viscose Nonwoven Fabrics as a Fibrous Frame of Polykon Mosaic Membranes

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