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Title: Electrostatic charge dissipation and electromagnetic interference shielding response of polyaniline based conducting fabrics
Authors: Saini, Parveen
Choudhary, Veena
Keywords: Electromagnetic interference shielding;Electrostatic dissipation;Conducting polymers;Polyaniline;Electrical conductivity;Antistatic fabrics
Issue Date: Feb-2013
Publisher: NISCAIR-CSIR, India
Abstract: Aqueous dispersions of poly(acrylic acid) (PAA) or polystyrene sulphonic acid (PSS) doped polyanilines (PANIs) designated as PANI-PAA and PANI-PSS, respectively were prepared by in-situ polymerization of aniline in the presence of above acids (PAA and PSS). These dispersions were coated over cotton fabrics by dip coating technique so as to impart electrical conductivity making them useful for antistatic and electromagnetic interference (EMI) shielding applications. XRD of these fabrics display the characteristic peaks of polyaniline and cotton substrate, whereas SEM images show the presence of conducting PANI coating over individual fibers as well as in the inter-weave regions. There fabrics show rapid (within 0.2 sec) dissipation of static charges and conform to antistatic criteria of 10%-cutoff decay time of less than 2.0 sec. In addition, moderate EMI shielding response was also observed with effectiveness (SE) value of -5.2 dB and -5.7 dB for four layered shields made up of PANI-PAA and PANI-PSS coated cotton fabrics, respectively.
Page(s): 112-117
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.51(02) [February 2013]

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