Synthesis and Evaluation of Modified Hydroxyapatite

Abstract

Hydroxyapatite and its related calcium phosphate materials possess extremely high ability of ion exchange against various cations and anions. In this study, Si ion incorporated hydroxyapatites, •g modified hydroxyapatite•h, were synthesized by a chemical processing and subsequently hydrothermal-treatment in order to develop modified hydroxyapatites. The characterization of microstructure of these products was examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrophotometry (FT-IR) and so on. These results suggested that the hydrothermal treatment of hydroxyapatite and colloidal silica resulted in the successful synthesis of Si ion incorporated hydroxyapatite. The relation between their microstructure and synthetic conditions was discussed.

Synthesis and Evaluation of Calcium-Deficient Hydroxyapatite with SiO<sub>2</sub>

“…The syntheses of HAP substituted with other metals have been eagerly attempted by various synthetic processes, such as hydrothermal treatments, ion-exchange treatments, and normal heat-treatments at high temperature in order to enhance the ion exchange ability and bioactivity of HAP [9][10][11][12][13][14][15]. For example, Fe substituted HAP i.e.…”

Synthesis and Characterization of Silicon-Doped Hydroxyapatite

“…13,14) Our previous study on HAp containing with SiO 2 sol indicated the possibility doping of SiO 2 to HAp by the hydrothermal process. [15][16][17][18][19][20] However, it has not come out about state of silicon in the silicon doped hydroxyapatite synthesized by hydrothermal technique. If SiO 2 segregated on surface of the sample, it might lead a danger to public health such as blood coagulation, infection.…”