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        Stretchable Electromagnetic Interference Shielding Textile Using Conductive Polymers and Metal Nanoparticles

        Vahid Shakeri Siavashani,Nevin Cigdem Gursoy,Majid Montazer,Pelin Altay 한국섬유공학회 2022 Fibers and polymers Vol.23 No.10

        In this research, multifunctional properties of cotton/lycra textiles coated with ternary composites of polypyrrole(PPy), silver nanoparticles (SNPs), and poly(3,4-ethylene dioxythiophene) poly(styrene sulfonate) (PEDOT:PSS) (P-S-Pcomposites) is reported. FTIR spectroscopy, XRD and XPS surface analysis proved successful in situ polymerization of theP-S and also attaching the PEDOT:PSS onto the cotton/lycra surface. Morphological observations showed that coating thecotton/lycra textile with the P-S-P composites made a more compact layer on the surface. Surface topology showed that thePEDOT:PSS was able to fill the gaps between the P-S composites, thus making the surface smoother. Wettabilityinvestigations showed that considering the Wenzel theory, by increasing the density of the P-S coating, the hydrophobicity ofthe fabric increased but according to the smoother surface of the fibers after coating with PEDOT:PSS, the hydrophobicitywas slightly reduced. Due to filling the gaps on the surface and more compact layer, the P-S-P coated textile acted as anexcellent electromagnetic interference shield (SE≈40 dB) showed better electromagnetic absorption, reflection, and shieldingeffectiveness (SE) of about 40 %, 103 %, 115 % respectively than the P-S coated textile while the transmission decreased to35 %. Moreover, the treated textile had wonderful antimicrobial activity against both Gram-positive and negative bacteriaand also fungi. According to flexibility, high conductivity, and multifunctional property, the cotton/lycra knitted textilescoated with P-S-P could be very reliable to be used for developing smart textiles which are desirable for protective andmedical applications.

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