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Facilely dispersible magnetic nanoparticles prepared by a surface-initiated atom transfer radical polymerization |
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| Authors: | Zupeng Guo Weihua Zhou Zhongfu Huang Meixiang Wan |
| Affiliation: | a Institute of Polymers, Nanchang University, Nanchang 330031, China b College of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China c Key Laboratory of Organic Solids, Centre for molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China |
| Abstract: | Facilely dispersible magnetic nanoparticles (Fe3O4) prepared by a surface-initiated atom transfer radical polymerization (ATRP) of poly (ethylene glycol) methyl ether monomethacrylate (PEGMA) are reported. The initiator of 2-bromoisobutyrate (BIB) for ATRP was immobilized onto the surface of Fe3O4 nanoparticles by the reaction between 2-bromoisobutyryl bromide (BIBB) and the hydroxyl group on the nanoparticles. The results indicated that the poly(poly(ethylene glycol) monomethacrylate) (PPEGMA) was successfully grafted onto the surface of the magnetic nanoparticles. The core-shell nanoparticles with particle size of ≈ 20 nm in water (about 20 mg/mL) are facilely dispersible and can be easily captured by a magnet with magnetic field of 2000 G. |
| Keywords: | Composite materials Magnetic materials ATRP |
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