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Preparation and characterization of chitosan-poly(acrylic acid) polymer magnetic microspheres. Polymer 2006

By Liang Guo, Guang Liu, Ruo-yu Hong and Hong-zhong Li

Abstract

Abstract: Spherical microparticles, capable of responding to magnetic fields, were prepared by encapsulating dextran-coated Fe3O4 nanoparticles into chitosan poly(acrylic acid) (PAA) microspheres template. The obtained magnetic microspheres were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and thermogravimetry (TG). The results showed that the microspheres were formed and demonstrated magnetic behavior in an applied magnetic field. In addition, magnetite particles were well encapsulated and the composite particles have high magnetite content, which was more than 40%

Topics: magnetic microsphere, magnetic separation, nanoparticles, chitosan
Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.352.607
Provided by: CiteSeerX
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