Synthesis of PVP-grafted NiFe2O4 Nanoparticles with the Surface Initiated Polymerization Technique

Nickel ferrite nanoparticles have been synthesized using the surfactant assistant hydrothermally technique with well controlled particle size and size distribution. The surface modification of magnetic nanoparticles was achieved using (3-chloropropyl)triethoxysilane. Modified nanoparticles were grafted with PVP using surface initialized radical polymerization. Crystal structure and crystallite size of the produced spinel ferrites were investigated by X-ray diffraction analysis (XRD) and scanning electron microscope (SEM). The magnetic properties of nanoparticles and nanocomposite were examined using a vibrating sample magnetometer (VSM). The NiFe2O4 nanoparticles with average size of 24 nm, were exhibited superparamagnetism and high saturation magnetization at room temperature. The synthesized strategy is thought to be an effective method in the synthesis of advanced materials to be used in bio-applications.