Electrically Conductive Textiles: Development and Characterization
Aniline and pyrrole were polymerized in-situ on cotton and polyester fabrics in order to make these fabrics electrically conductive, In-situ polymerization technique has been chosen because conductive polymers are very difficult to dissolve. The monomer was first diffused in the fabrics by exhaustion or by padding and then in-situ polymerized using ammonium persulfate (APS) as oxidant, in the case of polyaniline and ferric chloride hexahydrate, in the case of polypyrrole. The dopants used for the study include HCl, dodecyl benzene sulphonic acid, p- toluene sulphonic acid and 5-sulpho salicylic acid (for polyaniline) and p-TSA (for polypyrrole). The conductive textiles thus prepared were characterized in terms of electrical properties by measuring resistivity and-current-voltage response, surface morphology using SEM, crystallinity by XRD, thermal stability by TGA, resistance to weathering and EMI shielding potential. Surface resistivity as low as 100 Ω/cm<2> was obtained on cotton fabrics and 930 Ω/cm<2> with polyester fabrics as against~10<12> Ω/cm<2> and~10<16>Ω/cm<2> of the untreated control fabrics respectively. Threshold limit for voltage is 21 volts. EMI shielding efficiency of different treated materials has been measured at different microwave frequencies. After being earthed the polypyrrole treated polyester samples showed EMI shielding comparable to wire gauge or aluminum foil.
SEN Kushal AWASTHI Shraddha
Department of Textile Technology, Indian Institute of Technology Delhi, New Delhi-110016, INDIA
国际会议
上海
英文
602
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）