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Poly(vinyl chloride) (PVC) nanocomposites with different contents of copper alumina (Cu-Al 2 O 3 ) nanoparticles were prepared by the solution casting method.The effects of the nanoparticles on structural, thermal, electrical, contact angle and mechanical properties were thoroughly examined. The presence of Cu-Al 2 O 3 in the macromolecular chain was confirmed through Fourier transform infrared (FTIR) spectroscopy. The X-ray diffraction (XRD) analysis of PVC nanocomposites showed the systematic arrangement of Cu-Al 2 O 3 nanoparticles within the polymer, which indicated the higher crystallinity of the nanocomposites. The surface morphology of PVC was changed into hemispherical shaped particles by the inclusion of nanofiller was analyzed from SEM images. The glass transition temperature of the nanocomposites obtained from differential scanning calorimetry (DSC) was found to be increased with an increase in loading of nanoparticles in the polymer. The AC conductivity and dielectric studies revealed that the inclusion of nanofiller increases the electrical properties of the material and the composite with 7 wt.% sample showed the maximum conductivity and dielectric constant. The mechanical properties such as modulus, tensile strength, hardness, and impact properties of the PVC nanocomposites were significantly enhanced by the reinforcement of nanoparticles into the PVC matrix. The reinforcing mechanism behind the increase in tensile strength with the addition of nanoparticles was correlated with different theoretical models. The highest mechanical and electrical properties were observed for 7 wt.% Cu-Al 2 O 3 loaded nanocomposite. Contact angle measurements of PVC with various loadings of Cu-Al 2 O 3 nanofillers demonstrated that the nanoparticle attachment increased the hydrophobicity of the polymer matrix.conductivity, contact angle, copper alumina, dielectric properties, mechanical properties, nanocomposites, PVC Polyvinyl chloride (PVC) is one of the high-strength thermoplastic polymers with paramount chemical stability, durability, formulating versatility, corrosion resistance, and cost-effectiveness that make them potent candidates for automotive, construction and electronic applications such as flooring, bottles, pipes, indwelling catheters, fittings, and food packing. [1][2][3][4] Since PVC is more flexible and resistant to moisture than vulcanized rubber, it may

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This work insight into the structural, morphological, thermal, conductivity, dielectric and mechanical properties of chlorinated polyethylene/copper alumina (CPE/Cu-Al2O3) nanocomposites. The Fourier transform infrared spectra (FTIR) of the nanocomposites ensured the presence of Cu-Al2O3 in the polymer chains of chlorinated polyethylene. The X-ray diffractograms (XRD) clearly showed the amorphous nature of the pure polymer and the crystallinity imparted by the addition of the nanosized Cu-Al2O3 into the polymer. The surface morphology of CPE and CPE with different filler loadings was examined using a field-emission scanning electron microscope (FESEM), and the images showed the presence of hemispherical particles of nanometric size. The glass transition temperature (Tg) of the nanocomposite system was determined by differential scanning calorimetric analysis, and the Tg values showed an increase with the loading of nanoparticles. Investigation of electrical conductivity and impedance properties at room temperature with varying applied frequencies demonstrated an enhancement in electrical properties with the addition of nanoparticles. Dielectric constant and dielectric loss exhibit an increasing nature with frequency. The mechanical properties of the polymer nanocomposites, such as tensile strength, modulus, hardness, and impact resistance, were improved while their elongation at break was decreased by the addition of Cu-Al2O3. Several theoretical models were correlated with the experimental tensile strength to study the reinforcing mechanism of Cu-Al2O3 reinforced CPE.