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Article
Features of Synthesis of Anion Exchange Matrix “Polikon A” with Oxidated Ultrafine Additives on Lavsan Textile Bases
A comparative analysis of the studies on the influence of the textile structure of reinforcing fabric on the physicomechanical and sorption characteristics of anion-exchange systems as a component of the “Poli...
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Article
Effect of Nanodisperse Iron and Nickel Oxides on the Structure and Properties of Novolac Phenol—Formaldehyde Polycon Cation-Exchange Materials
Several aspects of the synthesis and formation of a sulfonated cation-exchange matrix on the surface and in the structure of novolac phenol—formaldehyde fiber with nanodisperse iron and nickel oxides added to ...
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Article
Lateral-Mosaic Polycon Composites Based on Chemical Fibers and Ion-Exchange Matrices
The potential for fabricating Polycon ion-exchange membranes based on chemical fibers and ionexchange matrices was studied. The fibrous filler was viscose fiber. Sulfonated cation-exchange and polyfunctional m...
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Article
Effect of Structural Heterogeneity of Polikon Mosaic Materials on Their Properties
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...
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Article
Thermochemical and Structural Transformations of Copolyamide Benzimidazole Fibers
The processes of thermal oxidation and carbonization of copolyamide benzimidazole (CPB) fibers were investigated, structural and chemical transformations were characterized by thermogravimetry, IR spectroscopy...
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Article
Laws of Solid-Phase Thermochemical Transformations During Thermal Oxidation of m-,p-Aramid–Polyacrylonitrile Fibous Composites in the Presence of Pyrolytic Additives
Thermochemical conversion of m-,p-aramid–polyacrylonitrile fibrous composites was investigated in the presence of small amounts of phosphorous compounds. Processes of polymer thermal transformation were charac...
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Article
Preparation of Nanofibre Material Containing Silver
The process of producing a carbon fibre material containing silver based on polyacrylonitrile nanofibres is investigated. It is shown that immobilizing silver during the spinning step is a more e...
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Article
Biodegradable porous scaffolds for the bone tissue regeneration
Scaffolds made of recombinant spidroin and fibroin of Bombix mori silk were produced by the salt leaching technique. The regenerative properties of scaffold were evaluated in experiments with rats by implantation...
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Article
Macrostructure of Polyacrylonitrile Nanofibers Produced by Electrospinning
The surface properties of polyacrylonitrile nanofibers were studied using capillary condensation of N2 and scanning electron microscopy. The macrostructures of polyacrylonitrile fibers produced by electrospinning...
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Article
Thermochemical Transformations of Polyacrylonitrile Nanofibers Prepared by Needleless Electrospinning
Thermochemical transformations at high temperatures of nanofibrous material prepared by needleless electrospinning of polyacrylonitrile were investigated. It was found that the fiber geometric dimensions affec...
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Article
Absorption of Silver Ions by Modified Hydrated-Cellulose Fibre Containing Functionally Active Thioamides
Absorption of silver ions by hydrated-cellulose chemisorbent fibre containing thioamides was investigated. The principal kinetic and concentration characteristics of the process were determined. It was found t...
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Article
Thermochemical Transformations of Phenolformaldehyde Fibers
Thermochemical transformations of phenolformaldehyde fibers (PFF) obtained from novolac resin were investigated during high-temperature treatment in air and an inert medium. Thermal transformations of the poly...
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Article
Features of thermochemical transformations during oxidation of m-,p-aramid–polyacrylonitrile fibrous composites
Thermal oxidation of m-,p-aramid − polyacrylonitrile polymer fibrous composites and their components was studied by instrumental analytical methods. It was found that mainly polyacrylonitrile fibre underwent chem...
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Article
Carbon—carbon composites based on precursors obtained by electrostatic spinning
Technical specifics of the preparation and properties of carbon—carbon electrically conductive porous composites were studied. Non-cloth material of ultrafine polyacrylonitrile fibers was used as the filler. I...
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Article
Sorption properties and functional profile of a thermally oxidized polymeric composite of m- and p-aramid and polyacrylonitrile fibers
The change of functional profile and structure of a polymeric fibrous composite m- and p-aramid— polyacrylonitrile and its components during thermal oxidation was studied by chemical and instrumental analytical m...
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Article
Sorptive polymers based on modified fibers
The principal features of chemical and structural transformations of polycaproamide fiber modified by grafted polyglycidylmethacrylate were examined during preparation of sorptive fibrous materials. Characteri...
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Article
Composition and properties of polyacrylonitrile solutions for nanofibre electrospinning processes
The influence of the type of solvent and silver ions on the structural and rheological properties of polyacrylonitrile (PAN) solutions and the feasibility of their conversion into nanofibres by spinneretless e...
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Article
Fundamental aspects of sorption of copper ions by aminohydroxyl-containing fibrous complexite
Fundamental aspects of sorption of copper ions by a complexite based on an aminohydroxyl-containing grafted copolymer of polycaproamide and poly(glycidyl methacrylate) were studied. The main kinetic and capaci...
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Article
Obtaining polyacrylonitrile fiber material by spinneretless electrospinning
We have studied the basic characteristics of spinneretless electrospinning of polyacrylonitrile fibers. We show the effect of the viscosity and the type of solvent on the fiber drawability of the solutions.
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Article
Modified method for determining aromatic diamines during the synthesis of oligomeric para-aramids
A modified high-performance liquid chromatography method for determining the quantitative content of unreacted paraphenylenediamine and diaminophenylbenzimidazole in the presence of dimethylacetamide is propos...
