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In this work, polyaniline (PANI) fabrics were fabricated using a facile method namely, immersion. Polyester (PES) fabrics were immersed in PANI solution followed by a drying process. In order to make ...the fabric conductive, p-toluene sulfonic acid (pTSA) was priory added into polymer solution as dopant. Different concentrations of dopant were used i.e. 0.3 wt%, 0.6 wt% and 0.9 wt%. Upon addition of the dopant, the colour of PANI fabric changed from blue (PANI Emeraldine Base) to green (PANI Emeraldine Salt) which indicates that the PANI fabric has transformed into the conductive state. Field Emission Scanning Electron Microscope (FESEM) and Fourier Transform Infrared Spectroscopy (FTIR) were used to analyse the morphology and reveal the chemical structure of doped and undoped PANI fabrics, respectively. Electrochemical Impedance Spectroscopy (EIS) was used to measure the conductivity of fabricated fabrics. FESEM analysis revealed the random distribution of PANI precipitates on PES which makes the surface rough. This provides a higher surface area and a more effective surface for chemical interaction with the acid. Fourier Transform Infrared Spectroscopy (FTIR) shows N-H stretching mode peak characterizing PANI appeared at 3436.18 cm^<-1> (PANI EB), 3444.02 cm^<-1> (0.3 wt% pTSA), 3428.34 cm^<-1> (0.6 wt% pTSA) and 3343.22 cm^<-1> (0.9 wt% pTSA) after the fabrication process. This indicates that PANI has been incorporated within the fabric. The EIS results revealed that doping with 0.9 wt% pTSA gives excellent conductivity of 3.30 x 10^<-3> S/m compared to undoped sample (1.06x10^<-7> S/cm) on PES fabric.続きを見る
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