COMPOSITION OF CARBOHYDRATES IN FRESH WHEY — Proceeding R-1

Abstract

The electrical resistance of woven fabrics is strongly influenced by the moisture content of the tested sample, which is largely determined by the relative humidity of the environment. Water molecules can become partially ionized, and the resulting water ions near the textile material help neutralize surface charges. Additionally, depending on their fibre composition, fabrics absorb varying amounts of moisture from the environment, which increases their electrical conductivity. This paper presents the results of the volume electrical resistivity testing of three fabrics with different fibre compositions intended for the production of women’s blazers (F1 – 100% PES, F2 – 96.1% PES and 3.9% Elastane, F3 – 100% Silk). In blazers, certain pattern pieces require reinforcement with a fusible interlining, which created the need for two-layer samples. Tests were conducted for fusible interlining (I – 71.2% and 28.8% PES) and fabrics fixed to it frontally (F1I, F2I, and F3I). The electrical resistivity of samples was measured in both warp and weft directions, in an environmental chamber with humidity ranging from 40% to 65%, in 5% increments. At 40% humidity, the lowest electrical resistivity was recorded in F3, while the highest was in F2. At 65% humidity, F1 showed the lowest resistivity and F2 the highest. The silk fabric (F3) lost its initial advantage over the PES fabric, which may be explained by its structural characteristics. It can be concluded that lowering the relative humidity of the environment by 25% significantly increases the electrical resistivity of the textile materials by several times.

Keywords: woven fabric, raw material, electrical resistance

Acknowledgment

Project BG16RFPR002-1.014-0005-Competence Centre „Smart Mechatronic, Eco and Energy-Saving Systems and Technologies“, Technical University-Gabrovo, Bulgaria. The project was financed by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (ev.No. 451-03-137/2025-03/ 200133)

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