Synthesis and characterization of polymeric nanocomposites based on poly-melamine-paraformaldehyde and superparamagnetic silicon dioxide loaded Iron(III) oxidecore-shell composite magnetic nanoparticles

Abstract

In this study, a novel magnetic nanomaterial was synthesized based on Schiff base condensation of low-cost materials under special conditions. A novel Fe3O4@SiO2 @PMF polymeric nanocomposites were prepared from a mixture containing poly-melamine-paraformaldehyde and silicon dioxide loaded Iron (III) oxide core-shell composite magnetic nanoparticles. The silicon dioxide (SiO2) was coated on iron (III) oxide )Fe3O4( magnetic nanoparticles (MNPs) by tetraethyl orthosilicate (TEOS) added via Stӧber method to prevent the core from oxidation or dissolving by acid solution and poly-melamine-paraformaldehyde (PMF) nanoparticles were modified the SiO2 loaded Fe3O4 in biocompatible solvents. Evaluation and characterization of synthesized product using Fourier-transform infrared spectroscopy (FTIR) analysis, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), vibrating sample magnetometry (VSM) and thermogravimetry analysis (TGA). According to the results, Fe3O4@SiO2@PMF MNPs have high thermal stability up to 450 oC with a %8 weight loss and furthermore VSM measurements indicated that the Fe3O4 and Fe3O4@SiO2 @PMF nanoparticles were superparamagnetic and the magnetization were 55.05emug-1 and 20.1emug-1 at room temparature, respectively.