Surface modification of Fe3O4 with acrylic groups and preparation of magnetic nanocomposite particles via miniemulsion polymerization

In recent years, magnetic nanocomposite particles have attracted the interest of many researchers because of their potential applications. In this work, magnetite (Fe3O4) nanoparticles were synthesized by coprecipitation method and modified with 3-aminopropyl triethoxysilane (APTES) and then acryloyl chloride (AC). The obtained nanoparticles were characterized by FTIR, XRD and SEM analyses. The modified Fe3O4 nanoparticles with surface unsaturation were copolymerized with methyl methacrylate(MMA), butyl acrylate(BA) and acrylic acid(AA) through miniemulsion polymerization. Thermal properties of the obtained nanocomposites were studied by TGA, DSC, DMTA and their morphology was investigated by SEM and TEM. DLS analysis was used to determine particle size and size distribution of the nanocomposites and magnetic properties of all prepared samples were studied by VSM analysis

Keywords:

magnetic nanoparticles , Fe3O4 , miniemulsion polymerization