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 degrees for PET to 39.25 degrees. 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.Graphical abstracta SEM of PET, b SEM of PPy/Fe2O3, c SEM of PET/(PPy/Fe2O3, d contact angle with ratios of Fe2O3 and e surface free energy with ratios of Fe2O3