Please use this identifier to cite or link to this item: https://doi.org/10.1002/marc.200600409
Title: Surface functionalization of Fe3O4 magnetic nanoparticles via RAFT-mediated graft polymerization
Authors: Wang, W.-C.
Neoh, K.-G. 
Kong, E.-T. 
Keywords: Core-shell nanoparticles
Magnetic
Poly(acrylic acid)
Polystyrene
RAFT
Issue Date: 2-Oct-2006
Source: Wang, W.-C., Neoh, K.-G., Kong, E.-T. (2006-10-02). Surface functionalization of Fe3O4 magnetic nanoparticles via RAFT-mediated graft polymerization. Macromolecular Rapid Communications 27 (19) : 1665-1669. ScholarBank@NUS Repository. https://doi.org/10.1002/marc.200600409
Abstract: Surface functionalization of Fe3O4 magnetic nanoparticles (MNP) via living radical graft polymerization with styrene and acrylic acid (AAC) in the reversible addition-fragmentation chain transfer (RAFT)-mediated process was reported. Peroxides and hydroperoxides generated on the surface of Fe3O4 nanoparticles via ozone pretreatment facilitated the thermally initiated graft polymerization in the RAFT-mediated process. A comparison of the MNP before and after the RAFT-mediated process was carried out using transmission electron microscopy (TEM) analysis, Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS). Gel permeation chromatography (GPC) was used to determine the molecular weight of the free homopopolymer in the reaction mixture. Well-defined polymer chains were grown from the MNP surfaces to yield particles with a Fe3O 4 core and a polymer outer layer. The resulting core-shell Fe 3O4-g-polystyrene and Fe3O4-g- poly(acrylic acid) (PAAc) nanoparticles formed stable dispersions in the organic solvents for polystyrene (PS) and PAAc, respectively. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.
Source Title: Macromolecular Rapid Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/90235
ISSN: 10221336
DOI: 10.1002/marc.200600409
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