Preparation and characterization of chitosan poly(acrylic acid) magnetic microspheres.
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%.
Guo
Liang
L
Department of radiology, The First Affiliated Hospital of Soochow University, and College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215007, China. ilguoliang@sohu.com
Liu
Guang
G
Hong
Ruo-Yu
RY
Li
Hong-Zhong
HZ
D000180:Acrylic Resins / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D003911:Dextrans / Q000737:chemistry; D052203:Ferrosoferric Oxide / Q000737:chemistry; D008280:Magnetics; D008854:Microscopy, Electron / Q000379:methods; D008863:Microspheres; D053758:Nanoparticles; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction
D000180:Acrylic Resins; D003911:Dextrans; C065246:chitosan-poly(acrylic acid); D048271:Chitosan; D052203:Ferrosoferric Oxide