Rok 2022
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- ItemEvidence tisku Vlákna a textil(2022-04-06) Tunáková, Veronika
- ItemOznámení k evidenci a přidělení evidenčního čísla periodickému tisku(2022-11-09) Tunáková, Veronika
- ItemDESIGNING OF HEALTH-SAVING MEN’S GLOVES(Technical University of Liberec, ) BUKHANTSOVA, LIUDMYLA; LUSCHEVSKA, OLENA; YANTSALOVSKYI, OLEKSANDR; KRASNIUK, LARYS; TROYAN, OLEKSANDR; KULESHOVA, SVETLANA; DITKOVSKA, OLESYA; Technická univerzita v LiberciLiving during a COVID-19 pandemic has negative effects on a person's psychophysiological state such as high-stress levels, leading to poor health, chronic fatigue and insomnia. As a result, the immunity is reduced, which is particularly dangerous today. One way to solve this problem is the use of health-saving clothing, which has additional features that provide the positive effect on the wearer’s body. The developed gloves affect the state of the human autonomic nervous system through biological-active locations in the places of the hand and wrist. An anthropometric study of the biological-active locations of the wrist and hand is performed to construct the glove design. An algorithm for constructing a drawing of the design of the designed product based on four measurements is proposed. The effectiveness of the adaptive gloves is confirmed by studying its effect on the psycho-emotional and psychophysiological state of a person without exposure to the product and after its use by software "Intera-Diacor" and "ROFES", and a questionnaire. The evaluation is performed after wearing gloves for 20-40 minutes. It was found that 83.3 % of the wearers of the health-saving gloves showed positive changes in the body's compensatory forces (stress) and the state of internal emotional fatigue. Thus, the use of health-saving gloves has a positive social, therapeutic (health-saving) and economic effect, as the product has several functions It is an accessory fashion, has hand protection, and, has additional features to positively influence the body of the person wearing it. This allows the future to talk about the use of consumer-friendly and effective ways to correct the men's psychoemotional and psychophysiological states, based on the safer-by-design concept.
- ItemUSE OF CHITOSAN AS ANTIMICROBIAL, ANTIVIRAL AND ANTIPOLLUTION AGENT IN TEXTILE FINISHING(Technical University of Liberec, ) ELAMRI, ADEL; ZDIRI, KHMAIS; BOUZIR, DHOUHA; HAMDAOUI, MOHAMED; Technická univerzita v LiberciWith the industrial developments in recent times, the textile industry also needs sustainable and environmental-friendly resources. Today’s world has been overburdened with the use of synthetic or hazardous materials in day-to-day life. Chitosan polymer obtained from chitin deacetylation, having a lot of properties beneficial to mankind without being hazardous to environment and humans is currently gaining popularity for research and development all over the globe. Antimicrobial and antiviral textile finishing with the help of chitosan is a new trend in the textile field. Also, chitosan having good adsorption properties finds its application in textile effluent treatments. This review reports and discusses multifunctional finishing and dyeing of textiles with chitosan and highlights its application for textile wastewater treatment.
- ItemDETERMINATION OF TENSION FOR ARAMID AND CARBON YARNS WHILE WEAVING INDUSTRIAL FABRICS(Technical University of Liberec, ) Shcherban, Volodymyr; Kolysko, Oksana; Melnyk, Gennadiy; Kolysko, Marijna; Shcherban, Yuriiy; Shchutska, Ganna; Technická univerzita v LiberciResulting from researches conducted to determine tension for para-aramid, meta-aramid, and carbon multifilament yarns during their contact with the operative parts of the weaving looms as part of the industrial fabrics formation process, we have found out that in threading areas the tension is increasing driven by variation of values of the friction forces in the contact area. It has been proven that tension degree of para-aramid, meta-aramid, and carbon multifilament yarns before industrial fabric formation area is influenced by (1) tension before cylindrical guide surface of an operative part, (2) radius of the cylindrical guide surface curve of the operative part, (3) contact angle between yarns and cylindrical guide surface of an operative part, (4) mechanical, physical and structural properties of para-aramid, metaaramid, and carbon multifilament yarns. It allowed (yet at the initial stage of design of technological process of industrial fabric formation) to determine para-aramid, meta-aramid, and carbon multifilament yarns tension before formation area depending on (1) form of threading line for yarns at the weaving loom, (2) mechanical, physical and structural properties of para-aramid, meta-aramid, and carbon multifilament yarns and industrial fabrics. The paper contains experimental research of interaction of para-aramid, metaaramid, and carbon multifilament yarns and cylindrical guide surfaces of the operative parts of automatic weaving looms. Based on experimental researches regression dependencies have been obtained between para-aramid, meta-aramid, and carbon multifilament yarns tension value after cylindrical guide surfaces of the operative part and (1) tension before cylindrical guide surface of the operative part, (2) radius of the cylindrical guide surface curve of the operative part, (3) contact angle between yarns and cylindrical guide surface of the operative part. Consecutive application of these regression dependencies allows to determine para-aramid, meta-aramid, and carbon multifilament yarns tension before industrial fabrics formation area. Analysis of regression dependencies allowed to find out values of technological parameters when para-aramid, meta-aramid, and carbon multifilament yarns tension before industrial fabrics formation area will be of minimum value. It will allow to minimize tension of para-aramid, metaaramid, and carbon multifilament yarns while manufacturing resulting in (1) yarn breakages reduction, (2) better productivity of weaving looms due to reduced stoppage time, (3) improved quality of manufactured industrial fabrics. Therefore, we can argue that suggested technological solutions are practically attractive. In view of this, it is reasonable to say that it is possible to directionally regulate the process of para-aramid, meta-aramid, and carbon multifilament yarns tension change while manufacturing industrial fabrics on the weaving looms through selection of values of guides’ geometrical parameters.
- ItemPECULIARITIES OF FUNCTIONING AND DIAGNOSTICS OF CROSS-SECTORAL ECONOMIC LINKS OF THE TEXTILE INDUSTRY OF UKRAINE(Technical University of Liberec, ) Ishchuk, Svitlana; Sozanskyy, Lyubomyr; Technická univerzita v LiberciThe analysis of cross-sectoral links and their comparative assessments identified the main problems of development of the textile industry of Ukraine. These include: high dependence on imported raw materials and components, low price competitiveness of Ukrainian textile industry products in the domestic market, the concentration of a significant part of production on the production of toll raw materials, imports of used clothing and footwear, cross-sectoral imbalance of Ukrainian textile industry. In particular, it is determined that the products of the textile industry in general, consumed by the Ukrainian economy are almost 60% covered by imports. Products used by the textile industry in their activities (costs) are covered by imports by a total of 49%. Ways to solve the identified problems and, thus, to optimize cross-sectoral linksships are proposed.
- ItemUSE OF THREE DIMENSIONAL PRINTING IN THE PRODUCTION OF TEXTILE PRINT FORMS(Technical University of Liberec, ) Petrushevski, Andri; Technická univerzita v LiberciSince the invention of woven fabric, various types of artistic printing on fabric have been used. One of the most ancient and widespread methods is letterpress and gravure printing. Besides printing, it is also widely used in industrial textile production. The creation of industrial printing plates is a very expensive process today. For this reason, for small editions more economical technologies are used, such as silk-screen printing. However, gravure and letterpress methods have several advantages over screen printing. Reducing the cost of production of printing plates of this type will be an undoubted progress. The relief on the surface of the printing plate is a three-dimensional construction. Therefore, it can be formed in the form of a digital three-dimensional model. Modern methods of three-dimensional printing make it possible to form a printed form based on such a digital model, suitable for use in the textile and printing industries. The introduction of this technology will definitely reduce the cost of manufacturing forms for textile printing. The article describes an experiment that confirms this assumption.
- ItemINFLUENCE OF ANTISTATIC POLYESTER FIBERS ON THE PROPERTIES OF COTTON AND POLYESTER SINGLE JERSEY KNITTED FABRICS(Technical University of Liberec, ) Asfand, Norina; Basra, Sikander Abbas; Daukantienė, Virginija; Jamshaid, Hafsa; Ali, Zulfiqar; Technická univerzita v LiberciIn this research, the influence of the antistatic polyester fibers containing carbon black on the comfort properties of 100% and blended cotton as well as on 100% and blended polyester single jersey knitted fabrics was evaluated. The research results revealed that the behavior of the investigated knitted fabrics was dependent on their structure and mechanical characteristics. The electrical resistance of knitted fabrics decreased significantly due to the use of 4% antistatic polyester fibers. The electrical resistance of the pure and blended cotton knitted fabric was lower than that of the pure and blended polyester knitted fabrics. Antistatic polyester fibers positively influenced the air permeability of the polyester knitted fabric. The air permeability of 100% and blended cotton fabrics was approximately 3.5 times compared to both 100% and blended polyester fabrics, respectively. The carbon black polyester fibers influenced the decrease in thermal resistance, the increase in vapor permeability, and the minor increase in vapor resistance of both cotton and polyester knitted fabrics. Thermal resistance was lower, water vapor resistance was significantly higher, and relative water vapor permeability was slightly lower for the cotton and cotton/antistatic polyester knitted fabrics than for the polyester and polyester / antistatic polyester knitted fabrics, respectively. Therefore, the research results revealed that the presence of 4% antistatic polyester fibers in cotton and polyester knitted fabrics positively influenced their antistatic behavior and improved or almost did not alter their comfort properties.
- ItemPHYSICO-CHEMICAL PROPERTIES OF MAGNETITES IN NANOCOMPOSITES ON THE TEXTILE BASES(Technical University of Liberec, ) RED’KO, YANA; GARANINA, OLGA; HUDZENKO, NATALIIA; DUDCHENKO, NATALIIA; Technická univerzita v LiberciThe article is devoted to investigation of the physico-chemical properties of magnetites in nanocomposites on the textile bases. It studies of the structure and phase composition of nanocomposite materials on the polyamide and viscose textile bases. It is shown that magnetite particles synthesized in textile material with average sizes of 9.4 nm in viscose textile material and 9.7 nm in polyamide textile material. The influence of synthesis conditions on the size of magnetite nanocrystallites in textile material is established.
- ItemSTUDY OF RIB KNITS COURSEWISE TENSILE PROCESS(Technical University of Liberec, ) Yelina, Tetiana; Halavska, Liudmyla; Bobrova, Svitlana; Lytvynenko, Nataliya; Dzykovych, Tetiana; Technická univerzita v LiberciStretchability of knitwear is one of the most important factors of wearing comfort. Elasticity of knitted structures in course wise direction is usually higher than along wales and often characterized by crosswise shrinkage. Existing methods of knitting program development do not consider the real rate of wale wise shrinkage of rib knitted structure under the course wise extension. During the study experimental research has been carried out to fulfill empirical data on the relationship between samples’ length and width under uniaxial course wise elongation. A range of samples of rib 1×1, 2×2, 3×3, 4×4 and 5×5 knits, made of cotton, bamboo, polyacrylonitrile (PAN), wool/acrylic blend and wool yarn, were stretched with a tensile machine WDW-05M. In the process of stretching the width of each specimen was defined in the moments of extension by 50, 100, 150, 200, 250 and 300 per cent. It has been found that linear approximation can be applied to describe the dependence of specimen’s width on its relative course wise elongation. It was found that the stitch height/width ratio changes unevenly. In the beginning of the process of course wise stretching of a rib knitted structure, it does exist, such an interval, where an increase of the knit’s linear size along the courses occurs without a significant shrinkage in the wale wise direction. It is suggested to name the upper limit of this interval as “unidimensional extension limit” and define it as an extension of a standard (100×50mm) specimen, at which its width decreases by 10%. It was found as well that the value of this index significantly depends on the ribbing variation and much less on the type of raw materials.
- ItemINVESTIGATION OF ANTIMICROBIAL PROPERTIES OF TEXTILE MATERIALS AFTER WASHING(Technical University of Liberec, ) Martirosyan, Irina; Pakholiuk, Olena; Golodyuk, Galyna; Lutskova, Viktoria; Lubenets, Vira; Technická univerzita v LiberciThis work is devoted to the study of antimicrobial properties of cellulose-containing textile materials treated with new safe biocidal products of thiosulfonate structure. A resource-saving method of providing antimicrobial properties to cellulose-containing textile materials is presented. High antimicrobial activity of biocidal products after washing was established. The duration of action and expediency of their use in the textile industry are proved. It is shown that after 10 washes the treated tissues lose only 14-15% of antimicrobial properties.
- ItemFASTNESS PROPERTIES IMPROVEMENT OF FLUORESCENT PIGMENTS(Technical University of Liberec, ) Islam, Md. Khayrul; Mamun Kabir, Shekh Md.; Hosen, Md. Dulal; Islam, Md. Azharul; Technická univerzita v LiberciThe resistance of the material to a change of its color characteristics during exposure to sunlight, rubbing and washing as domestic and laundry and other various ways are referred to as color fastness of dyes or pigments. In this research, 100% cotton and blended fabrics were dyed with fluorescent pigments i.e. Shining Flu Pink-F17 and Papillion Orange-FGRN in exhaust dyeing method. The improvement of color fastness properties, i.e. color fastness to washing, rubbing, perspiration and light were observed with the treatment of using antioxidants and UV-absorbers. There were eight samples of dyed fabrics (Four samples of 100% cotton knit fabric and four samples of 60/40 cottonpolyester blended fabrics) treated with 1% (v/v) of antioxidants i.e. Gallic acid, L-Ascorbic acid and UV absorbers i.e. 2-hydroxy-4 methoxy-benzophenone, 4-4 dimethoxy-benzophenone respectively. The treatment of antioxidant L-Ascorbic acid and UV absorber 4-4 dimethoxy-benzophenone provides satisfactory improvement of fastness properties than other antioxidants and UV absorbers. The results were mainly interpreted in terms of color strength, visual assessment of evenness and fastness ratings.
- ItemCOMPARISON OF QUANTITATIVE METHODS FOR DETERMINING THE ANTIBACTERIAL EFFECTIVENESS OF NON-WOVEN TEXTILES(Technical University of Liberec, ) ŠČASNÍKOVÁ, KATARÍNA; SIBILOVÁ, ANDREA; BÁNOVSKÁ, ZUZANA; Technická univerzita v LiberciThis contribution is aimed at comparing two quantitative methods for determining the antibacterial effectiveness of non-woven textiles and assessment of permanence of the antimicrobial finish of the nonwoven textile materials prepared from polypropylene fibers. Experience and results obtained by the quantitative test methods specified in AATCC TM 100 and STN EN ISO 20743 intended to evaluate the effectiveness of the antibacterial finish are published in the contribution. Emphasis is placed on comparability of the selected test methods, on the test microorganism used in the study as well as on evaluation of the results of antibacterial effectiveness. The non-woven fabrics, that were the subject of the evaluation, were pre-treated by surface activation with low-temperature plasma at atmospheric pressure and subsequently finished using antimicrobial (AMB) nanosol solution with a concentration of 15 ppm Ag+, 30 ppm Ag+, 60 ppm Ag+ and 120 ppm Ag+. Antibacterial effectiveness before washing and after 5 washing cycles is demonstrated on the specific examples obtained from practice.
- ItemINFLUENCE OF MICROENCAPSULATION PARAMETERS ON THE SIZE AND MORPHOLOGY OF MICROCAPSULES BY ECO-FRIENDLY SOLVENT EVAPORATION METHOD ORIENTED TO MEDICAL TEXTILES(Technical University of Liberec, ) THUY DAO THI CHINH; SINTES-ZYDOWICZ NATHALIE; HUONG CHU DIEU; Technická univerzita v LiberciApplication of microcapsules in medical textile has been studied and commercially developed widely in recent years. The aim of this work was to propose an eco-friendly microencapsulation by solvent evaporation method that can contribute to the manufacture of medical textile products using microcapsules. Quillaja saponin was used as bio-sourced surfactant and ethyl acetate was used as the less toxic, non-halogenated organic solvent. The influences of saponin concentration, stirring speed during emulsification step and the volume of ethyl acetate used to saturate the aqueous phase before emulsification on the microcapsule size and morphology were investigated. The results showed that eudragit microcapsules of ibuprofen with diameter in range from 17 to 34 µm, which were suitable for medical textile applications, were successfully elaborated. The saponin concentration varied from 0.025 to 0.1 wt%. The stirring speed was changed from 700 to 600 rpm. The volume of ethyl acetate used in saturation step was 0, 8 and 12 ml. In the scope of investigation, the saponin concentration and the volume of ethyl acetate used in saturation step did affect the microcapsule size and morphology while the stirring speed did not. The saturation step really helped to reduce the formation of irregular microparticles and to narrow the size distribution, but the microcapsules became more porous, weaker and were deformed significantly by drying in the fabric treatment process.
- ItemRESEARCH ON THE ABILITY OF YARNS FOR TEXTILE PROCESSING(Technical University of Liberec, ) Slizkov, Andrew; Mykhailova, Halyna; Borolis, Inna; Technická univerzita v LiberciThe article is intended to study the destruction mechanism of yarns of different structures under different types of deformations that occur during their textile processing (weaving, knitting, etc.). Improving the wear resistance of yarns is one of the main ways to determine the causes of their destruction in textile processing with their subsequent elimination. The significance of this problem is determined by the fact that increasing the reliability and endurance of yarns is equivalent to increasing output without additional labor and material resources. The ability of yarns for textile processing is mainly determined by their mechanical characteristics in tension: tensile strength and elongation, endurance, longevity, cyclic elongation, and the like. In the regulatory documents, this ability is mainly assessed only by the indicators of tensile strength and elongation, which does not fully characterize their behavior in textile processing. Therefore, the study of the features of the yarn destruction under different types of mechanical interactions, as well as the impact of their structure on the process of destruction, is relevant for predicting their endurance and developing a new range of textile fabrics.
- ItemUSE OF ARDUINO-COMPATIBLE SYSTEMS IN DEVICES FOR DETERMINATION OF COLOR INDICATORS OF FLAX FIBER(Technical University of Liberec, ) TOLMACHOV, VOLODYMYR; RIABKO, ANDRII; Technická univerzita v LiberciThe paper substantiates the use for Hue, Saturation, Value color model to determine the color coordinates of flax fiber, based on it proposed a new device for determining the color indicators of flax fiber using of arduino-compatible systems, outlines the principle of its operation and design features, and tests of the developed device using reference samples of flax fiber.
- ItemRESEARCH OF WEAR RESISTANCE OF DRAWINGS PERFORMED BY ACRYLIC PAINTS IN HAND PAINTING TECHNIQUES(Technical University of Liberec, ) VODZINSKA, OKSANA; BILOTSKA, LARYSA; VORONA, NADIIA; DONCHENKO, SVITLANA; Technická univerzita v LiberciThe article considers a modern way of decorating clothes - hand-painted with acrylic paints based on motifs of Petrykivka's paintings. The possibility of using acrylic paints for hand painting of denim products in the technique of Petrikivka is investigated. The evaluation of the process of making drawings with different types of acrylic paint on denim fabric is performed. An experimental study of the wear resistance of the finished garment, namely: color fastness of the applied pattern to rubbing and to the washing. Based on the obtained data, a variant of acrylic paint is proposed, which provides high-quality production of competitive garments with hand-painted finishing in the technique of Petrikivka.
- ItemCOLOR PERCEPTION ESTIMATIONS OF METAMERIC PAIRS UNDER DIFFERENT ILLUMINANCE LEVELS(Technical University of Liberec, ) Mukthy, Azmary Akter; Vik, Michal; Viková, Martina; Technická univerzita v LiberciLEDs or light emitting diodes of the lighting class dominate both the indoor and outdoor lighting industries today due to their accuracy and consumer-friendly color temperature. In the context of color science, it is necessary to analyze both the spectral power distribution of lighting and the human characteristics of color perception under these lights. In this article, we provide estimates of the appearance of eleven metameric pairs under LEDs with four correlated color temperatures and six illuminance levels, using color difference formulas based on the CIELAB, CAM02-UCS, and CAM16-UCS models to verify our estimates. We followed ASTM D4086 standard visual methods for detecting metamerism and for estimating the magnitude of a metameric color difference. Our investigations found that color appearance models are more reliable than CIELAB in evaluating color difference under various LED conditions. CAM16-UCS more accurately predicted the color difference estimates between all three formulas. Our comparative study confirms that the variation in the estimates with the CCT and illuminance levels of the LED sources depends on the color appearance model used. The results also showed that in order to determine the color difference of metameric pairs, optimal conditions regarding the colorimetric properties of the samples and the variability of the observer should be considered separately. We noticed an increasing correlation trend with increasing illuminance. However, there was no such increase or decrease trend in CCTs. The trend of the STRESS change in the color appearance models showed the influence of the chromatic adaptation, but the establishment of adaptation patterns is far beyond the scope of this work. Although our research has had limitations on correlated color temperature and illuminance, we believe that it can be beneficial for the lighting application to ensure correct lighting decisions when assessing the color differences of metameric pairs.
- ItemTHE INFLUENCE OF CORE - SHELL RATIO ON CHARACTERISTICS OF MICROCAPSULES CONTAINING CINNAMON ESSENTIAL OIL APPLIED TO AROMATHERAPEUTIC TEXTILES(Technical University of Liberec, ) Huong, Chu Dieu; Thi Chinh Thuy, Dao; Thi Tu Trinh, Nguyen; Technická univerzita v LiberciMicroencapsulation is one of the techniques to prepare the functional textiles. In this paper the essential cinnamon oil loaded microcapsules were prepared by solvent evaporation method. In the microencapsulation process, the core - shell ratio was changed by altering the cinnamon oil content in four levels of 0.15, 0.25, 0.35 and 0.45 g while the other components remained unchanged. The microcapsule characteristics including shape and morphology, size and size distribution, microencapsulation efficiency in dependence on the core-shell ratio were investigated. The antimicrobial capacity and the fragrance durability of interlock knitted fabric coated with the elaborated microcapsules were evaluated. The results showed that cinnamon oil was microencapsulated successfully in the spherical microcapsules. When the cinnamon oil content increased, the microcapsule size decreased and the size distribution became broader, the microcapsules were more porous and more aggregate, the fragrance intensity of the fabric treated with microcapsules increased while the activity against E. coli bacteria decreased. According to the results, the microcapsules elaborated with 0.15 g of cinnamon oil was recommended for the treatment of interlock cotton knitted fabric to apply in aroma and antimicrobial textiles.
- ItemTRAVELLER CLEARER GAUGE CONSEQUENCE ON YARN QUALITY(Technical University of Liberec, ) SIDDIQUA, TOUFIQUA; AZIZ, TOWFIK; CHOWDHURY, MAHMUD FARHAD; TANIA, SHAHRIN IMANA; Technická univerzita v LiberciTraveller clearer is an important part of the ring frame machine because, without it, fiber flying in the traveller cannot be cleaned. As a result, fiber congests travellers which may lead to a rise in end breakage rate as well as declination of quality of yarn. Six ring spun yarns of count 85’s tex were produced by using different traveller clearer settings and Burkina Faso cotton fiber was used as a raw material. Both High Volume Instrument (HVI) along with Advanced Fiber Information System (AFIS) was used for recognizing the fiber properties. The ring-spun yarn was produced from the roving count of 985 tex and spindle speed was kept at 7000 R.P.M. with Twist Per Meter (TPM) 492. Evenness properties, as well as strength of yarns, were measured with Uster Tester-6 and Titan Single Yarn Strength Tester respectively, and end breakage rate was studied. One-way ANOVA test was accomplished for all properties of yarn by using Microsoft Excel 2019. Traveller clearer gauge with 3.10 mm shows the best result among the other samples. Yarn properties such as imperfection index, hairiness, Sh (-), tenacity, and processing performance like end breakage rate express the best values. ANOVA result shows a significant difference for all properties except elongation.