Rozdziały

Stały URI dla kolekcjihttp://hdl.handle.net/11652/4411

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20222

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Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Estimating biodegradation of cotton fabric by soil burial
    (Wydawnictwo Politechniki Łódzkiej, 2022) Sánchez-Martínez, Ainhoa; Belda-Anaya, Raquel; Capablanca, Lucía; Payá, Jaime Gisbert; Bonet-Aracil, Marilés
    Today we can see a greater awareness of sustainability and environmental protection, however, there are many environmental impacts that are not measured and therefore taking measures to minimize them is not easy. In this article we intend to evaluate the biodegradability of a cotton fabric through the generation of one of the greenhouse gases, CO2. For this, the cotton fabric is buried in an artificial ecosystem and accelerated aging is carried out. The results show that the biodegradability of cotton fabric is around 70-80% of the biodegradability of cellulose.
  • Pozycja
    Comparison of the fineness and mechanical properties of hemp fiber conditionned in two different relative humidity environments
    (Wydawnictwo Politechniki Łódzkiej, 2022) Decker, Aurélie; Tritter, Adrien; Sarazin, Vivien; Harzallah, Omar; Drean, Jean-Yves
    Bast fiber, like hemp, has an affinity for water [1,2]. The moisture content of hemp fiber increased with the increasing of relative humidity [1]. The relative humidity changes the fiber properties [2,3] studied by LPMT (Laboratoire de Physique et de Mécanique Textile) in Mulhouse, France. A comparison of the fiber properties measured in two different relative humidity environments (30% and 60%) was studied. The fiber was placed between two specific cardstock frameworks with glue. The fineness was determined from the diameter measured with a projection microscope. Then, the tensile test was realised with MTS® , tensile testing instrument, to determine the breaking force, strain and stress and the Young’s modulus. The hemp fiber was manually extracted from unretted stem. The cultivar used was Santhica 27 cultivated in the East of France [4] by SADEF, a plant nutrition expert. The impact of the relative humidity environment on the fiber properties was not constant. The tensile tests realised in this study were not homogeneous. Dispersion of the results could be caused by bast fiber multi-scale. The selection caused more variability of fiber properties than the relative humidity for hemp fiber.