Browsing by Author "Militky, Jiri"

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    Dyeing and stiffness characteristics of cellulose-coated cotton fabric.
    (Springer Science, 2016) Kale, Bandu Madhukar; Wiener, Jakub; Militky, Jiri; Rwawiire, Samson; Mishra, Rajesh; Abdul, Jabbar
    In this study, the effect of cellulose coating on dyeing and other properties of cotton fabric was investigated. Three different reactive dyes were used for dyeing coated cotton fabric. The effect of cellulose coating on the dyeing properties of cotton fabric was studied by determining the K/S values of coated substrate at different concentrations of cellulose and dye. The K/S value decreased by 40–60 % with increasing coating concentration of cellulose from 0 to 5 %. The results show that the stiffness was increased from 0.16 to 2.50 N/m by coating of cellulose on the surface of cotton fabric. The stiffness was permanent as confirmed by ten multiple washings. Mechanical properties remained excellent. X-ray diffraction analysis showed that the amount of cellulose II increased slightly after solvent treatment. Fastness properties of cellulose-coated cotton fabrics against rubbing, washing, and perspiration were good.
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    Effect of enzyme and plasma treatments of bark cloth from ficus natalensis : morphology and thermal behavior.
    (The Journal of the Textile Institute, 2015) Rwawiire, Samson; Tomkova, Blanka; Weiner, Jakub; Militky, Jiri
    Utilization of natural vegetable fibers as fillers in polymer composites is on the rise due to numerous advantages such as low specific weight, renewability, greenhouse gas emission mitigation, and less energy requirement in processing compared to synthetic fibers.Bark cloth is a naturally occurring non-woven fabric,produced in Uganda from majorly three tree species: Antiaris toxicaria, Ficus brachypoda, and Ficus natalensis. The most commonly used species is F. natalensis which after various processing routes is used in art and design to produce fashion articles. For efficient processing and mechanical properties of natural fiber-reinforced composite structures, there is a need for fiber surface treatment in order to enhance fiber to matrix adhesion and the wettability of the fibers. Bark cloth being a natural fibrous non-woven fabric, the surface microfibers have plant material in the form of flakes and waxes for which if the fabric were to effectively undergo further processing, there is a need of dissolving the impurities.