溶胶-凝胶法制备羟基磷灰石粉末的研究

Studies on hydroxyapatite powders via sol-gel process

对以硝酸钙和磷酸作为前驱体,采用溶胶 凝胶法制备羟基磷灰石粉体进行了研究。研究发现硝酸钙溶液的初始浓度、煅烧温度对所制得的粉体颗粒大小有较大的影响。通过XRD、FTIR及TG DTA分析,最终探索出了较为容易操作的工艺条件。

Hydroxyapatite powders were prepared by the solgel reaction starting from Ca(NO3)2·4H2O and H3PO4. Xray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG) and differential thermal analysis (DTA) were employed to characterize the process of solgel transition. The results obtained indicate that the initial concentration of Ca(NO3)2 and sintering temperature have important effects on structural features. 