Abstract
This research investigates the effect of the addition of regular titanium dioxide (TiO2) and core-shell titanium dioxide coated with Silicon dioxide (TiO2@SiO2) nanoparticles for tailoring the electrical properties of polypropylene (PP) nanocomposites. Nanoparticles with and without surface treatment were added into PP through the solution blending method. Sixteen different compositions were formulated by varying types, concentrations, and surface treatment of nanoparticles. Nanocomposites were characterized by Fourier transform infrared spectroscopy, scanning electron microscope, AC, DC breakdown tests, leakage current, and volume resistivity. The addition of both, regular and core-shell nanoparticles, significantly improved the electrical properties of PP. It was also observed that core-shell nanoparticles revealed better electrical properties as compared to regular nanoparticles. Nanoparticles with surface treatment exhibit superior results as compared to those without treatment. This is because of the lower surface energy of surface-treated nanoparticles causing a uniform dispersion inside the polymer base.
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