LI Yan-li, YANG Hong*, DONG Xu-gang
(Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; College of Chemistry and Materials Science, Shaanxi Normal University, Xi′an, 710062, Shaanxi China)
Abstract:
The paper describes the synthesis of the PSStNa-grafted magnetite/silica nanocomposites. The modified silica-coated Fe3O4 microspheres were prepared by grafting the anionic polyelectrolyte (PSStNa) using surface-initiated atom transfer radical polymerization (SI-ATRP). These hybrid microspheres are characterized by using various experimental techniques such as Transmission electron microscopy (TEM), X-ray diffraction (XRD), Energy dispersive X-ray spectrometry (EDS), Fourier transform infrared spectroscopy (FT-IR), and Vibration sample magnetometer (VSM). Based on this method, the uniform-sized Fe3O4/SiO2 magnetic composites covered with PSStNa could be obtained.
KeyWords:
Fe3O4/SiO2 nanoparticles; PSStNa; ATRP; Magnetic polymer composite materials
