The design and synthesis of magnetic ultra-fine polysaccharide particles

K. Yagi, M. Tokuda, T. Kobayashi, T. Kishita
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引用次数: 4

Abstract

Magnetic iron oxide were synthesized using as the initial materials ferrous chloride (FeCl/sub 2/), ferric chloride (Fe/sub 2/Cl/sub 3/) and ferric Ar gas ambiance. At the same time, the magnetic iron oxide colloid particles were coated by Polysaccharides in a solvent. Polysaccharides magnetite (PSM) complex was synthesized under various conditions. At first, the sample was measured by Dynamic Light Scattering. Next, the influence of the polysaccharide on the saturation magnetization was examined. Third, a sample was observed with the transmission electron microscope. And finally,reduction of the particle diameter was attempted by decreasing polysaccharide molecular weight. It was found that particle diameter and saturation magnetization can be controlled by the methods described.
磁性超细多糖颗粒的设计与合成
以氯化亚铁(FeCl/sub 2/)、氯化亚铁(Fe/sub 2/Cl/sub 3/)和氧化亚铁(Fe/sub 2/Cl/sub 3/)为原料合成了磁性氧化铁。同时,在溶剂中用多糖包覆磁性氧化铁胶体颗粒。在不同条件下合成了磁铁矿多糖配合物。首先,采用动态光散射法对样品进行测量。其次,考察了多糖对饱和磁化强度的影响。第三,用透射电子显微镜观察样品。最后,通过降低多糖分子量来减小粒径。结果表明,采用上述方法可以控制颗粒直径和饱和磁化强度。
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