Synthesis, characterization and dielectric properties of polymer nanocomposites for energy storage applications

In this project, the oxidative chemical polymerization method is used to prepare polymer composite that consisting of
polypyrrole polymer (PPy) and iron oxide nanoparticles (Fe2O3NPs). Then deposited this blend (PPy/Fe2O3) onto the PET
substrate to creating flexible nanocomposite PET/(PPy/Fe2O3). Analyzing the samples using X-ray diffraction (XRD) and
Fourier-transform infrared spectroscopy (FTIR) proves that the composite was effectively formed. With varying Fe2O3
ratios, the dielectric parameters of PET polymer and PET/(PPy/Fe2O3) composite have been documented at frequencies
of 40–5.6 MHz. The surface properties were significantly enhanced by irradiation. The surface free energy increases from
41.36 mJ/m2 to 66.23 mJ/m2 and water contact angle reduces from 58.36° for PET to 39.25°. The results demonstrated that
the composite surface characteristics were enhanced as the concentration of Fe2O3 changed. The obtained data showed that
the fabricated samples have better properties than the PET films that can be utilized in many applications as capacitors and
storage devices