Role of copper alumina nanoparticles on the performance of polyvinylchloride nanocomposites

Abstract

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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