Fabrication and Characterization of Polyaniline on Cotton Fabric via Two-Step in-situ Polymerization

Abstract

The conducting polyaniline (PANI) was fabricated with hydrochloric acid and ammonium persulfate (APS) as dopant and oxidant respectively on cotton fabric via two-step in-situ polymerization process. Effect of APS concentration on conductivity, EMI shielding effectiveness (SE) and weight gain rate of PANI coated on cotton fabric were investigated. FTIR spectra, crystallinity and morphology of resultant substrate were analyzed via attenuated total reflectance method (ATR), X-Ray diffraction (XRD), scanning electrical microscope (SEM) and optical microscope respectively. The result indicated that the optimum conductivity (0.5 kΩ) and SE (60%) of coated substrate were obtained at the concentration of APS 0.2 mol/L, and PANI had good combination with cotton substrate. The crystal structure of cotton fiber doped with PANI had no change with the increase of its crystallinity (up to (74.46±1)%).