Hybrid magnetic materials based on polyethylene containing co and ni nanoparticles

Abstract

New hybrid magnetic materials based on HDPE filled with Со and Ni nanoparticles have been prepared via the metal vapor synthesis. Properties of the metal-polymer composites have been elucidated as a function of MVS parameters and metal nature. The Faraday method has been applied to characterize the magnetic properties of the systems. The microstructure of the samples has been studied with a number of X-ray and synchrotron techniques, including XRD, EXAFS and SAXS. Core-level and valence band spectra were measured by XPS. The peak at binding energy of 282.8 eV characteristic of C-Ni bond was recorded in the C 1s spectrum. It was shown that properties of nanocomposite materials with similar compositions are determined both by the synthesis conditions and post-synthesis factors.

Nanoparticles positioning effect on properties of (PS‐PANI/NiNPs) nanocomposite films

“…The new O1s photoelectron peak that appears at 530.6 eV represents the bonds resulting from the oxidation NiNPs due to exposing the nanocomposite surface to oxygen plasma. The applied magnetic field drives the NiNPs towards the surface and the outer region of the (PS‐PANI)/NiNPs nanocomposite films, which relates to the intramolecular bonding condensation between the NiNPs and the polymer matrix, as well as the oxidation of NiNPs resulting in the NiO due to the plasma treatment 24,25 . The Ni‐atoms in the (PS‐PANI)/NiNPs nanocomposite films under uniform magnetic fields (50 and 100 mT) appear in three forms (Figure 3), NiNPs, NiONPs, and NiOHNPs, as seen in the Ni2p XPS spectra at 853.1 and 854.5 eV, representing the former the superposition of the and bonds, and the latter is the (854.5 eV).…”