Design and synthesis of new-type ultra-fine magnetic fluid and its evaluation of material property

In order to improve the characteristics of magnetite, we have been tried to combine Fe/sub 3/O/sub 4/ particles with polysaccharide. The water solubility of the polysaccharide which had magnetite (Fe/sub 3/O/sub 4/) of the magnetic oxidized iron were chosen to have living body adaptability and to hold the design of the new compound material which had magnetism and dispersion stability. Magnetite was chosen as the core material, glycosaminoglycans (mucopolysaccharides) and compound polysaccharides were used as the dispersion material of the non-magnetism as the outside shell coat material from the polysaccharide. The sample made by this research group could be placed on the function material in and had multiple functions (magnetism, fluidity, living body adaptability). Evaluation and measurement was performed on the character of the material as a new type ultra-fine magnetic fluid, and the control of the magnetic character, the dispersion stability, and the preparation conditions were evaluated.