Preparation of Dextran Magmetoc Nanoparticles

Abstract

Abstract: Superparamagnetic dextran magnetic nanoparticles were prepared by coprecipita-tion.The nanoparticles were separated by gel filtration chromatography and centrifugation.In the course of preparation of dextran magnetic nanoparticles,increase of dextran concentration resulted in decrease of magnetic susceptibility,but increase of amount of ironic saltsand concentration of ammonium hydroxide caused magnetic susceptibility increase. When Fe³⁺)/Fe²⁺ molar ratio was between 2～0.5, magnetic susceptibility of dextran magneticnanoparticles was larger.Co²⁺could replace Fe²⁺during the preparation.

Key words: Dextran, Magnetic nanoparticles, Susceptibility, Superparamagnetism

TrendMD:

LI Min-Qin, XU Hui-Xian, HE Bing-Lin. Preparation of Dextran Magmetoc Nanoparticles[J]. Chem. J. Chinese Universities, 1996, 17(1): 147.

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Preparation of Dextran Magmetoc Nanoparticles

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