Jiang, Liming Sun, Weilin Kim, Jungahn 2024-01-21T01:32:29Z 2024-01-21T01:32:29Z 2021-09-05 2007-02-15 0254-0584 https://pubs.kist.re.kr/handle/201004/134645 Magnetite (Fe3O4) nanoparticles were prepared by in situ precipitation and oxidation of ferrous ions in the presence of omega-functionalized polystyrenes having carboxylate, sulfonate, thiol, and thiolated groups. Based on the results, for the orthogonal experimental design, both the ratio of the concentration of iron precursor to polymer and the reaction temperature were the, major factors controlling the particle size and its shape morphology. By adjusting the reaction conditions, the iron oxide particle size can be effectively controlled in the range between 2 and 20 nm. The magnetite-based polymer composite was characterized by UV-vis spectroscopy, thermogravimetric analysis, transmission electron microscopy, and X-ray diffraction. Magnetization measurements revealed that the nanocomposite materials exhibit superparamagnetic behavior at room temperature. (c) 2006 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA PARTICLES IRON GAMMA-FE2O3 FILMS Preparation and characterization of omega-functionalized poly styrene-magnetite nanocomposites Article 10.1016/j.matchemphys.2006.05.007 1 MATERIALS CHEMISTRY AND PHYSICS, v.101, no.2-3, pp.291 - 296 MATERIALS CHEMISTRY AND PHYSICS 101 2-3 291 296 scie scopus 000244394100010 2-s2.0-33846437845 Materials Science, Multidisciplinary Materials Science Article PARTICLES IRON GAMMA-FE2O3 FILMS magnetite nanocomposites synthesis magnetic properties