A Sustainable Route From Quartz to Bifunctional Material with Adsorbed Lanthanides for Enhanced Fluorescent Activation in Doxycycline Sensing Olha Semeshko, Maksym Fizer, Valeriia Sliesarenko, Jaroslav Briancin, Oleksandr Bondarchuk, et al. Advanced Materials Interfaces, 2025 A nanosized bifunctional adsorbent with diamino and phenyl groups on its surface is synthesized through the functionalization of silica derived from quartz. The composition, morphology, and particle size of the functionalized silica are characterized using various physicochemical methods. The material demonstrates high sorption properties for La(III) and Ce(III), both found in Ni‐MH batteries, as well as Eu(III). The synthesized functionalized silica, with adsorbed lanthanides, is employed for sensor‐based detection of doxycycline in aqueous solutions. After sorbing lanthanides, the bifunctional adsorbent shows a linear response to doxycycline in the concentration range of 0.005–10.0 µm, with a detection limit of 0.15 µm L−1 and a quantification limit of 0.44 µm L−1. The increase in photoluminescence signal upon the addition of doxycycline is explained using Judd–Ofelt theory. Experimental W2 and W4 parameters of the Eu‐doped nanomatrix are determined to be 1.44 × 10−20 cm2 and 8.55 × 10−20 cm2, respectively, with these values increasing to 73.40 × 10−20 cm2 and 35.58 × 10−20 cm2 upon the addition of doxycycline. A significant increase in the radiative emission rate from 196 s−1 to 1977 s−1 is observed with doxycycline addition. It is demonstrated that the system containing the three lanthanides exhibits unique sensor properties, attributed to the co‐luminescence of the Eu(III) ion.
EFFECT OF ZNO NANOPARTICLES SYNTHESIZED BY THE IMPROVED METHOD ON THE ANTIBACTERIAL PROPERTIES OF COTTON TEXTILE MATERIALS Tatyana Asaulyuk, Olga Semeshko, Yuliya Saribyekova, Irina Kulish, Ihor Horokhov Eastern European Journal of Enterprise Technologies, 2024 The object of this study is imparting antimicrobial properties to textile materials made from natural fibers and their blends. The study is aimed at solving the problem of ensuring a prolonged antimicrobial effect of cotton-containing fabrics. The use of ZnO nanoparticles, synthesized by the simple resource-saving method, as part of polymer-colloidal finishing compositions for the fabrics finishing is proposed. The effectiveness of using synthesized ZnO to impart prolonged antibacterial properties to cotton fabrics was assessed by studying the morphology, chemical composition, and bactericidal activity of nanoparticles. ZnO nanoparticles were synthesized by direct precipitation method at low temperatures in a short time in an aqueous solution using zinc acetate dihydrate and sodium hydroxide as precursors. The average crystallite size calculated using the Scherrer method is 28 nm. The degree of crystallinity according to X-ray diffraction pattern is 93 %. Using scanning electron microscopy, the formation of nanoparticles of uniform size in the form of short rods was established and the successfully synthesized ZnO phase in the hexagonal wurtzite structure was confirmed. The chemical purity of the crystalline material was confirmed using energy dispersive analysis. The atomic percentages of the elements are 47.6 % and 52.4 % for Zn and O, respectively. Study of the inhibition zone around fabric disks treated with ZnO showed their high bactericidal activity against air microflora and the gram-negative bacterium P. aeruginosa. It has been established that the use of ZnO as part of a polymer-colloidal system based on the acrylic polymer ensures the resistance of bactericidal treatment to washing. The reported scientific results are of practical importance for improving the standard technological process for finishing cotton textile materials
Diamine Groups on the Surface of Silica Particles as Complex-Forming Linkers for Metal Cations Veronika Tomina, Nataliya Stolyarchuk, Olha Semeshko, Mariusz Barczak, Inna Melnyk Molecules, 2023 Novel spherically shaped organosilica materials with (propyl)ethylenediamine groups were obtained via a modified one-pot Stöber co-condensation method. The porosity of these materials was tuned with the controlled addition of three silica monomers acting as structuring agents (tetraethoxysilane and bridged silanes with ethylene and phenylene bridges). The morphologies and structures of the synthesized materials were studied by SEM, DRIFT spectroscopy, CHNS elemental analysis, low-temperature nitrogen adsorption–desorption, and electrokinetic potential measurements. Their sizes were in the range of 50 to 100 nm, depending on the amount of structuring silane used in the reaction. The degree of the particles’ agglomeration determined the mesoporosity of the samples. The content of the (propyl)ethylenediamine groups was directly related with the amount of functional silane used in the reaction. The zeta potential measurements indicated the presence of silanol groups in bissilane-based samples, which added new active centers on the surface and reduced the activity of the amino groups. The static sorption capacities (SSCs) of the obtained samples towards Cu(II), Ni(II), and Eu(III) ions depended on the porosity of the samples and the spatial arrangement of the ethylenediamine groups; therefore, the SSC values were not always higher for the samples with the largest number of groups. The highest SSC values achieved were 1.8 mmolCu(II)/g (for ethylene-bridged samples), 0.83 mmolNi(II)/g (for phenylene-bridged samples), and 0.55 mmolEu(III)/g (for tetraethoxysilane-based samples).
IMPROVEMENT OF FLAME RETARDANT AND ANTIBACTERIAL PROPERTIES OF COTTON-POLYESTER BLEND FABRICS IHOR HOROKHOV, IRINA KULISH, TATYANA ASAULYUK, YULIA SARIBYEKOVA, OLGA SEMESHKO, et al. Vlakna A Textil, 2023 The fire retardant and antibacterial characteristics of cotton-polyester blend fabric have been improved. A composition has been developed for complex finishing of fabric using a phosphorus-containing substance on a biological basis, which, due to its high phosphorus content, can provide a fire-retardant function to textile material, as well as increase its antimicrobial properties. The thermal characteristics of treated textile materials have been studied and it has been established that the presence of phytic acid at the initial stage of destruction shifts the temperature towards lower values due to the activation of phytic acid degradation before the decomposition of the main substrate. The maximum temperature at which the final destruction of the cotton-polyester fabric occurs shifts to higher temperatures from 507°C for the untreated fabric to 565°C for the treated fabric, and the presence of dry residue increases by more than 2.5 times, which proves an increase in the heat resistance of the textile material. The length of the damaged area in the vertical combustion test was 6.5 cm, and the absence of drop formation of the polyester component was also noted, which eliminates the potential destructive effect due to the possible formation of additional fire areas. An increase in fabric antimicrobial activity is confirmed by a zone of inhibition of 2 – 4 mm around the sample using the diffusion method with gram-positive bacteria Staphylococcus pyogenes, as well as a pronounced growth inhibition of microorganisms around fabric samples examined by the method of inoculation of microflora from the environment. Treatment with the studied composition improves washing resistance and does not impair the mechanical properties of the textile material by increasing the degree of crosslinking of the polymer components used in the finishing composition.
EVALUATION OF THE COMPATIBILITY OF POLYORGANYLSILOXANES AND HIGH-MOLECULAR POLYMERS USED AS EMULSIFIERS IN FINISHING WORKS IHOR HOROKHOV, IRINA KULISH, TATYANA ASAULYUK, YULIA SARIBYEKOVA, OLGA SEMESHKO, et al. Vlakna A Textil, 2022 The compatibility of polyorganylsiloxanes and high-molecular polymers used as emulsifiers was evaluated. The surface and bulk properties of the studied compounds were evaluated using the solubility parameters (δ). It is shown that the copolymers of acrylic acid compound – polyacrylamide and hydrolyzed polyacrylamide, as well as polyvinyl alcohol without residual acetate groups in the macromolecule have the highest degree of incompatibility with polyorganylsiloxanes. It was established that the presence of residual acetate groups in the macromolecule of polyvinyl alcohol leads to an increase in the degree of compatibility of polymers. The calculated data on the fractions of solubility parameters and cohesive energy of polyorganylsiloxanes and emulsifying polymers are presented. The contributions of the components of polymers cohesive energy due to the fractions of dispersion interaction αd, dipole-dipole interaction αdd, and hydrogen bonding αh, as well as their influence on the degree of solubility of the polymer – emulsifier system, are shown. The choice of polyvinyl alcohol with residual acetate groups as an emulsifier for polyorganylsiloxanes is theoretically substantiated based on the concept of the solubility parameter as a measure of the affinity of the system components. The developed approach to assessing the compatibility of the polymer – emulsifier system is of practical importance for the creation of polymer compositions in the finishing works.
Study of the Influence of the Surface Roughness of Knitted Fabrics from Natural Fibres on the Light Fastness of Their Colours Olga Semeshko, Yulia Saribyekova, Tatyana Asaulyuk, Sergey Myasnykov, Irina Kulish, et al. Tekstilec, 2022 The article examines the influence of the surface properties of knitted fabrics from cotton and wool of various knitted structures on the light fastness of their colours. The surface properties of knitted fabrics of single plain, 1×1 rib and French piqué knitted structures were evaluated by determining their roughness using a non-contact optical method for processing digital images of the knitted fabric’s surface. The roughness profiles of the corresponding knitted fabric samples were obtained, and the main indicators of surface roughness were calculated: the profile height at ten points Rz and the arithmetic mean profile deviation Ra . Cotton knitted fabrics were dyed with the Bezaktiv Cosmos dye brand, which are bifunctional reactive dyes with monochlorotriazine / vinyl sulfone active groups, and wool knitted fabrics were dyed with acid dyes. The light fastness of the samples was evaluated after exposure to the Light Fastness Tester (Mercury-Tungsten Lamp) RF 1201 BS (REFOND) with a PCE-TCR 200 colorimeter. Colour measurements were averaged for each sample. Total colour difference (dE) was measured on the dyed cotton knitted fabrics samples after light exposure. According to the obtained roughness profiles of cotton and wool knitted fabrics, it can be concluded that the studied knitted fabrics are characterized by different roughness, which depends on their knitted structures. At the same time, a relationship was found between an increase in the roughness of knitted fabrics and the photodestruction of colours by reactive and acid dyes on cotton and wool knitted fabrics, respectively. The results show that the surface structure of knitted fabrics, that is the knitted structure, impacts the process of colour photodestruction and that the amount of dye that has undergone photodestruction increases with the increasing surface roughness of the knitted fabric.
EFFECT OF PHYTIC ACID ADDITION ON STRUCTURAL CHARACTERISTICS OF ACRYLIC POLYMER FILM Vlakna A Textil, 2021
Study of structure and thermal characteristics of styrene acrylic polymer films lacrytex 430 filled of titanium dioxide Vlakna A Textil, 2020
Effect of styrene acrylic and urethane polymer coatings filled with titanium dioxide on thermophysical properties of fabric surface Vlakna A Textil, 2020
Study of the influence of preparation of knitted fabric on the surface and supramolecular structure of cotton fiber Vlakna A Textil, 2019
Study of influence of the preparation method on the light fastness of cotton knitted fabric Vlakna A Textil, 2019
The use of high-energy discrete processing in acid method for the production of wool grease Izvestiya Vysshikh Uchebnykh Zavedenii Seriya Teknologiya Tekstil Noi Promyshlennosti, 2017
Study of high-energy discrete processing on the physical and chemical properties of wool grease Izvestiya Vysshikh Uchebnykh Zavedenii Seriya Teknologiya Tekstil Noi Promyshlennosti, 2016
Study of the efficiency of using sodium silicate as a hydrogen peroxide stabilizer in low-temperature method of bleaching the cotton fabrics Izvestiya Vysshikh Uchebnykh Zavedenii Seriya Teknologiya Tekstil Noi Promyshlennosti, 2014
Innovative technologies of processing of wool fibres Izvestiya Vysshikh Uchebnykh Zavedenii Seriya Teknologiya Tekstil Noi Promyshlennosti, 2013
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