Abstract
Significant progress has been done in the synthesis of polymer nanocomposites owing to their great application in various fields like in devices, limiting diodes, photodetectors, solar cells, and spin-coating. The present study deals with the incorporation of polyvinyl alcohol (PVA) nanocomposites blend using Mg0.5Zn0.5Fe2O4 nano-particles. The Micro-emulsion method has been utilized to synthesis Mg0.5Zn0.5Fe2O4 nanoparticles and after that implanted into PVA network via ultrasound-assisted liquid-phase approach. This method can be used to solve problems with nanoparticles dispersion and stabilization in the PVA matrix. Under ultrasonication, the aggre-gation of nanoparticles was found to be reduced. Transmission electron microscopy (TEM) revealed that PVA chains have encircled the Mg0.5Zn0.5Fe2O4 nanoparticles, which is further verified by Fourier-transform infrared spectroscopy (FTIR) peak shifting values. The X-ray diffraction (XRD) patterns demonstrated that the composite crystalline structure is single-phase cubic. The crystallite size for the largest peak (1 1 1) increases gradually from 31.49 to 43.79 nm by increasing the concentration (0.1-0.5 g) of nanoparticles with PVA. The interaction of PVA and nanoparticles in nanocomposites samples was confirmed by FTIR, which showed shifting bands in FTIR spectra. Loss factor and dielectric constant show a decreasing trend, with variable amounts of nanoparticles and constant polymer concentration. The dielectric properties of with variation of nanoparticles revealed that these materials might be considered a good candidate for modern devices like memristors, and Random access memories (RAM).