Enhancing the Surface Activity and the Electrical Conductivity of the Novel Flexible Ternary PET/(PPy/g-C3N4) Films for Dielectric Devices

Abstract The chemical oxidative polymerization approach is applied in this study to create the polymer nanocomposite PET/(PPy/g-C3N4) films used in dielectric devices. These films are composed of graphitic carbon nitride nanoparticles (g-C3N4) and polypyrrole (PPy) deposited on a polyethylene terephthalate (PET) substrate. Characterization techniques such as Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy, and X-ray photoelectron spectrscopy were applied to prove the fabrications of the samples successfully. The SEM images show the changes in the agglomeration of the PPy/g-C3N4 after depositing on the PET substrate. The impact of (PPy/g-C3N4) on PET electrical conductivity and surface wettability were determined. The water adhesion work goes up from 77.1 mJ/m2 for PET to 100.2 mJ/m2 for PET/(PPy/g-C3N4). Moreover, the conductivity is increased from 2.13x10-8 S.cm-1 for PET to 4.6x10-6 S.cm-1 for (PPy/g-C3N4)/PET. The results show that PET/(PPy/g-C3N4) films can be applied for energy storage devices after the PPy/g- C3N4 is incorporated into PET.