Supercritical fluid mediated synthesis of poly(2-hydroxyethyl methacrylate)/Fe3O4 hybrid nanocomposite

Title
Supercritical fluid mediated synthesis of poly(2-hydroxyethyl methacrylate)/Fe3O4 hybrid nanocomposite
Author(s)
심재진웬방호아[웬방호아]할도리유바라즈팜쿠앙롱[팜쿠앙롱]
Keywords
DISPERSION POLYMERIZATION; HYDROXYETHYL METHACRYLATE; MAGNETITE NANOPARTICLES; BIOMEDICAL APPLICATIONS; METHYL-METHACRYLATE; CELL-SEPARATION; DRUG-DELIVERY; MICROSPHERES; COMPOSITES; PARTICLES
Issue Date
201106
Publisher
ELSEVIER SCIENCE BV
Citation
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, v.176, no.10, pp.773 - 778
Abstract
Poly(2-hydroxyethyl methacrylate) (PHEMA) and magnetic nanoparticle (Fe3O4) hybrid nanocomposite was synthesized by dispersion polymerization in supercritical carbon dioxide (scCO(2)) using a copolymeric stabilizer, poly[(2-dimethylamino)ethyl methacrylate-co-1H,1H-perfluorooctyl methacrylate] (PDMAEMA-co-PFOMA). Fe3O4 nanoparticles were first surface-modified with a silane coupling agent methacryloxypropyltrimethoxysilane (MPTMS), which provides a reactive C=C bond and can copolymerize with 2-hydroxyethyl methacrylate (HEMA). After immobilization of the silane coupling agent, polymer chains were successfully grafted onto the surface of Fe3O4, resulting in the formation of core-shell nanostructure. FE-TEM pictures showed that the nanoparticles were well dispersed in the polymer matrix. The incorporation of Fe3O4 in the nanocomposite was confirmed by FT-IR, XRD and XPS. Thermal stability and magnetic property increase with the increasing amount of Fe3O4 nanoparticles in the composite. This new environmentally benign green synthetic route may offer advantages of easy separation and solvent removal. (C) 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/25131http://dx.doi.org/10.1016/j.mseb.2011.02.020
ISSN
0921-5107
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공과대학 > 화학공학부 > Articles
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