Magnetic nanoparticles encapsulated latexes prepared with photo-initiated miniemulsion polymerization

This study describes the use of photo-initiated miniemulsion polymerization of methyl methacrylate and the incorporation of magnetic nanoparticles. With photo-initiator in the oil-in-water miniemulsion, UV irradiation led to the formation of polymer latexes after 15 min with the reaction temperature lower than 45 °C. Moreover, this method can be applied for the incorporation of magnetic nanoparticles. The particle sizes were measured by laser particle analyzer which showed narrow distributions. The morphology of the particles was examined with a transmission electron microscope and scanning electron microscope. The incorporation of magnetic nanoparticles was characterized with X-ray diffraction and vibrating sample magnetometer, both of which demonstrated that magnetic nanoparticles had been successfully incorporated into the polymer matrix.