Browsing by Author "Boguslawska-Baczek, Monika"
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- ItemEffective Water Vapour Permeability of Wet Wool Fabric and Blended Fabrics(Inst Chemical Fibres, 2013) Boguslawska-Baczek, Monika; Hes, LubošThe water vapour permeability of fabrics is one of the most important factors determining wearer comfort. Contrary to commonly accepted theories, outerwear is often used in a wet state, which has an influence on their properties. However, common standard measuring instruments mostly do not enable reliable measurement of wet fabrics due to the long time of measurement, during which the fabrics get dry. This paper presents the fast instrument - Permetest, which provides reliable measurement of the water vapour permeability of fabrics in a dry and wet state. By means of the instrument, the relative and effective water vapour permeability of different wool fabrics in a dry and wet state were determined and the results discussed. The main contribution of the measurement was the determination of the exact ratio between the level of heat flux density of the heat flow penetrating the wet fabric, having a cooling effect, and that of the heat flux density of the heat flow caused by moisture evaporation from the fabric surface, also having a cooling effect.
- ItemThermal insulation and thermal contact properties of wool and wool/PES fabrics in wet state(TAYLOR & FRANCIS INC, 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA, 2019-02-17) Akcagun, Engin; Boguslawska-Baczek, Monika; Hes, LubošThe most important parameters characterizing thermal comfort of special garments are thermal resistance and water vapor permeability. Contrary to common textiles, protective garments are often used in wet state, which affects their comfort properties. However, current measuring instruments mostly do not enable reliable measurement of wet fabrics. In the article, Alambeta instrument was used, which provides reliable measurement of thermal comfort of dry and wet fabrics. Research program included evaluation and discussion of the thermal properties: conductivity, resistance, and absorbtivity of wool and wool/partial use of hydrophobic fibers woven fabrics in dry, standard, and wet states. The effect of composition on the above-mentioned properties of these fabrics has also been investigated.