Preparation of magnetic polymer particles with nanoparticles of Fe(0)

Iron nanoparticles (Fe(0)), were encapsulated into polymethyl methacrylate (PMMA), by means of emulsion polymerization techniques in a semicontinuous process. The final average diameter of the composite particle was calculated until three times of average particle of iron particles and were stabilized with a non-ionic surfactant. They were then characterized by scanning electron microscopy and dynamic light scattering. Their magnetic properties were determined by parallel field vibrating-sample magnetometry method. The results indicated that the magnetic properties are a function of polymer concentration in the nanocomposite particle.

Nanoparticles of Fe(0) were encapsulated with different amount of PMMA. The magnetization properties were a function of final average diameter of composite particle.Figure optionsDownload high-quality image (70 K)Download as PowerPoint slideResearch highlights
► The magnetic polymers exhibit a fast and very strong response to external magnetic fields.
► Particles of Fe(0) were encapsulated with different quantity of polymethyl methacrylate.
► The magnetization values of the Fe(0) nanoparticles naked and encapsulated were largest than those reported for magnetite.