Browsing by Author "Danchenko, Yuliya"

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    THE EFFECT OF ELECTRIC PULSE TREATMENT ON THE PROPERTIES OF HEMP FIBRE
    (Technical University of Liberec, ) Rastorhuieva, Mariia; Yevtushenko, Valentyna; Shvets, Galina; Andronov, Vladimir; Danchenko, Yuliya; Olijnyk, Halina; Technická univerzita v Liberci
    The production of competitive textile products can be ensured by using natural, environmentally friendly fibres, which include hemp fibre, as raw materials. To expand the possibility of its use, an essential operation is the pre-treatment of the fibre. The use of electric pulse processing of hemp fibre will provide the ability to control the depth of cottonization, select optimal parameters that collectively evaluate the spinning ability of the fibre and correspond to the permissible similar indicators of cotton fibre. The purpose of the work done is to study the mechanism of electric pulse processing of hemp fibre by identifying its structural characteristics under various processing modes for further use. The work carried out studies of the process of cottonization of hemp fibre by a physical-mechanical method using an electric pulse discharge from 500 to 2500 cycles. An effective mode of electric pulse processing of fibres has been established, amounting to 2500 pulses of electric discharges, which makes it possible to obtain cottonized hemp fibre with the required spinning ability. The parameters of cottonized hemp fibre have been determined, allowing the use of hemp cottonin to produce mixed yarn using a card spinning system on cotton spinning equipment.
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    RESEARCH ON LIGHT RESISTANCE OF THE CHENILLE COTTON FABRICS’ COLORING
    (Technical University of Liberec, ) Olijnyk, Halina; Danchenko, Yuliya; Kornytska, Larysa; Technická univerzita v Liberci
    Colour fastness is one of the important characteristics, which depends on the further effective and rational use of the potential fabric resource, durability, wear resistance, and the level of competitiveness in the market. Therefore, evaluating the light fastness of colours of cotton fabrics, in the wear of which sunlight plays a major role, is an urgent scientific task. Chenille cotton fabric, which is currently in demand by textile decorators and modern interior decoration, was chosen for the research. The research was carried out using methods of visual and instrumental colorimetry. The conducted research is valuable for providing information to the market and for further analysis and implementation of the process of developing a system technology for designing chenille cotton fabrics.