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

Abstract

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.

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

“…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.…”

Features of Synthesis of Anion Exchange Matrix “Polikon A” with Oxidated Ultrafine Additives on Lavsan Textile Bases

“…The creation of composite heterogeneous anioncation-exchange membranes with a mosaic structure and anion-exchange membranes, as their constituent element, promising for use in sorption and electromembrane processes, especially for capacitive deionization of water, has been a very urgent task in the last decade [2,3].…”

“…Due to the growing interest in reinforced polymer membranes based on thermosetting matrices and high-temperature fibers, obtained by low-stage and environmentally unstressed technologies, membranes synthesized by the method of polycondensation filling have come to the forefront [3,4]. Earlier, we carried out a number of studies on various ion-exchange matrices reinforced with chemical fibers: polypropylene (PP), viscose (VF), polyacrylonitrile (PAN), phenol formaldehyde novolac (PFN), etc.…”

“…This study is the continuation of comprehensive studies [2][3][4][5][6], for the first time, it proposes the use of Lavsan fabric as a promising fibrous base, as well as the possibility of introducing ultrafine silicon, iron and nickel oxides into the composition of the created compositions, and the influence of the textile structure of the fiber base on the physical, chemical, and sorption characteristics of developed membranes is studied.…”

“…EXPERIMENTAL "Polikon" materials were obtained by polycondensation filling of a fibrous matrix with a monomerization composition and further formation of an anionite matrix both on the fiber surface and in its structure [3][4][5]. The technological process consisted of prepreparation of raw materials, obtaining of monomerization compositions (epichlorohydrin + polyethylene polyamine) and their application onto a fibrous filler, synthesis, curing-forming of a spatial network of polymer matrices on the surface and in the volume of the system.…”