Synthesis of P (MMA-co-AA-co-DVB) Fe₃O₄/magnetic composite nanoparticles

Soap free emulsion polymerization technique was used for preparing organic-inorganic composite nanoparticles. The technique involves first the preparation of Poly methylmethacrylate (MMA), Acrylic acid (AA) and Divinyl benzene (DVB) poly (MMA-co-AA-co-DVB) polymer through soap free emulsion polymerization process and the coating 50-nm Iron Oxide nanospheres as model composites on the surface of poly (MMA-co-AA-co-DVB). Divinyl benzene was used as cross linker. The morphology and the magnetic properties of the magnetic composite nanoparticles were characterized by Laser particle size analyzer, Transmission Electron Microscopy, Fourier Transform Infrared spectroscopy, Vibrating sample magnetometer and Thermo Gravimetric Analysis. Poly (MMA-co-AA-co-DVB) Fe3O4 nanoparticles were prepared in the size range 200 nm. The preparation of the most widely used magnetic iron oxides in appropriate form, their coating in polymer nanoparticles, surface morphology and functionalization with their method of preparation is discussed in this paper. This structure could find potential uses as demulsifier applications.