Nickel-Containing Nanocomposites Based on Isotactic Polypropylene and High-Pressure Polyethylene

Abstract—The effect of nanofiller (NF) additives containing nickel oxide nanoparticles (NPs) stabilized by a polymer matrix of high-pressure polyethylene (PE) obtained by the mechanochemical method on the peculiarities of the structure and properties of metal-containing nanocomposites based on isotactic polypropylene (PP) and high-pressure polyethylene (PE) is studied. Differential thermal analysis (DTA), X-ray diffraction (XRD), and scanning electron microscopy (SEM) are used. Improvement of the strength, deformation, and rheological parameters as well as thermo-oxidative stability of the obtained nanocomposites is found. This is apparently associated with the synergistic effect of the interfacial interaction of nickel-containing nanoparticles in the PE matrix with the components of the PP/PE polymer composition. It is shown that nanocomposites based on PP/PE/NF can be processed by both the method of pressing and the methods of injection molding and extrusion, which expands the scope of their application.