Rozdziały

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

Przeglądaj

Filtry

20222

Ustawienia

Autorsearch.filters.applied.operator.equals: search.filters.author.Mehravani, Behnaz

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Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Development of a plasma activated multifunctional polyester fabric using zinc oxide nanoparticles and citronella oil microcapsules
    (Wydawnictwo Politechniki Łódzkiej, 2022) Mehravani, Behnaz; Nicolau, Talita; Ribeiro, Ana Isabel; Parente, Joana F.; Sousa, Vânia I.; Tavares, Carlos J.; Padrão, Jorge; Zille, Andrea
    There is a high demand for the development of textiles possessing multifunctional properties for outdoor, protective and health care applications. The coating of polyester (PES) textiles with metal nanoparticles and essential oils may act in a synergistic mode to obtain materials with improved antimicrobial and UV-protection properties. However, the lack of functional groups onto PES structure makes the adhesion of particles a difficult task. In this work, PES fabric was activated by dielectric barrier discharge (DBD) plasma treatment, and functionalized with zinc oxide nanoparticles (ZnO NPs) and poly (methyl methacrylate) (PMMA)-citronella microcapsules by dip-coating.
  • Pozycja
    Sustainable and multifunctional natural fiber-based electric wire sheaths for smart textiles
    (Wydawnictwo Politechniki Łódzkiej, 2022) Mehravani, Behnaz; Padrão, Jorge; Fernandes, Rui D.V.; Nicolau, Talita; Alves, Cátia; Ribeiro, Ana I.; Peixoto, Joaquim Jorge; Carvalho, Hélder; Zille, Andrea
    Envisioning the development of sustainable products for improvement of daily life quality, a cable-like composite using natural fibers was developed to be potentially used in smart textiles. Natural fibers such as jute and hemp were used along with Bekinox®VN yarn. Bekinox®VN is a stainless steel conductive yarn often used in intelligent textiles within a wide range of applications such as antistatic, power and signal transfer, thermal conductivity or even as a heat resistant sewing yarn. Furthermore, applying a chitosan coating on the surface of the sheath will confer antibacterial properties, thus preventing the colonization and proliferation of bacteria, as well as natural fiber degradation. The chitosan coating was applied by a pad dry method. Tests were performed to evaluate the mechanical, electrical and antimicrobial properties. The results displayed that the best tensile strength was obtained for hemp fabric followed by cable composite. The antimicrobial properties were improved with the coating of chitosan and demonstrating excellent results against Gram-positive and Gram-negative bacteria. Although chitosan reduces the mechanical strength of the sheath, it confers antibacterial activity, which not only will preserve the fiber in the structure but will also protect human skin against possible crosscontaminations.