Conductive wool yarns by continuous vapour phase polymerization of pyrrole
Shaikhzadeh Najar, Saeed, Kaynak, Akif and Foitzik, Richard C. 2007, Conductive wool yarns by continuous vapour phase polymerization of pyrrole, Synthetic metals, vol. 157, no. 1, pp. 1-4.
Title
Conductive wool yarns by continuous vapour phase polymerization of pyrrole
Conducting polypyrrole (PPy) coated wool yarns were prepared by a continuous vapour polymerization technique, using a speed of 1 m/min with different iron(III) chloride (FeCl3) as the oxidant at different concentrations. The resistivities, tensile properties, longitudinal and cross-sectional views of PPy-coated wool yarns were investigated. Optimum specific electrical resistances of 2.96 Ω g/cm2 at 80 g/L FeCl3 and 1.69 Ω g/cm2 at 70 g/L FeCl3 were obtained for 500 and 400 twist per meter (TPM) yarns, respectively. PPy-coated wool yarns exhibited higher elongation than uncoated yarns. Longitudinal and cross-sectional views of the yarns indicate that PPy coating penetrated deep into the yarn cross-section and a uniform coating was obtained on the surface of the yarn surface.