GUO Li-feng, et al. Preparation and characteration of superparamagnetic Fe3O4 chitosan nanoparticles[J]. Journal of Chongqing Medical University, 2010,35(11):1690-1692.
GUO Li-feng, et al. Preparation and characteration of superparamagnetic Fe3O4 chitosan nanoparticles[J]. Journal of Chongqing Medical University, 2010,35(11):1690-1692. DOI: 10.13406/j.cnki.cyxb.2010.11.046.
Objective:To prepare superparamagnetic Fe3O4 chitosan nanoparticle and detect its physical&magnetic properties.Methods:Superparamagnetic Fe3O4 chitosan nanoparticles were prepared through chemical coprecipitation.The sample was analysed with configuration and magnetism by transmisson electron microscopy and atomic force microscopy
X-ray powder diffraction
vibrating sample magnetometer
laser diffraction particle size analyser
respectively.Results:The core of sample was Fe3O4 crystal
with the diameter of chitosan-coated particles ranging from 20 to 30 nm
the coercive force of 0.532 oe
residual magnetism of 1.281 8×10-5 emu and saturation magnetization of 0.011 52 emu. Conclusion:Small size
good dispersibility and superparamagnetic characteristic make Fe3O4 chitosan nanoparticle as a non-viral gene carrier.
关键词
超顺磁性壳聚糖纳米粒矫顽力
Keywords
SuperparamagnetismchitosannanoparticlesCoercive force