Controlled preparation of Fe3O4/P (St-MA) magnetic composite microspheres by DPE method |
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Authors: | Feige Guo Qiuyu Zhang Hepeng Zhang Baoliang Zhang Junwei Gu |
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Affiliation: | (1) Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education, School of Science, Northwestern Polytechnical University, Xi’an, 710072, China |
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Abstract: | In this work, controlled radical polymerization based on 1, 1-diphenylethylene (DPE method) was used to prepare magnetic composite
microspheres. By this method, Fe3O4/P (St-MA) magnetic composite microspheres were prepared via copolymerization of styrene (St) and maleic anhydride (MA) using
DPE as radical control agent in the presence of Fe3O4 nanoparticles. The structure and properties of the magnetic composite microspheres obtained were characterized by IR, 1H-NMR, SEC-MALLS, TEM, TGA, VSM, DLS and other instruments. It was found that the DPE method allows the controlled preparation
of magnetic composite microspheres, and Fe3O4/ P(St-MA) microspheres possess perfect sphere-shaped morphology, homogeneous particle size, carboxylic surface, superparamagnetism
with a saturation magnetization of 14.704 emu/g, and magnetic content with a value of 25%. |
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