Sol-gel法制备羟基磷酸钙超细粉末
来源期刊：中南大学学报(自然科学版)2000年第3期
论文作者：邝志清 潘春跃 黄可龙 高鸿儒
文章页码：246 - 248
关键词：Sol-gel法;羟基磷酸钙;制备
Key words：hydroxyapatite; preparation; Sol-gel method
摘 要：用Sol-gel法以磷酸和氢氧化钙为原料制备了羟基磷酸钙(HAP)超细粉末.重点研究了体系pH值、磷酸的滴加方式和滴加速度对产物组成和性质的影响.结果表明:通过控制磷酸的滴加方式和滴加速度,在体系pH为11~12条件下可制得纯HAP超细粉末.
Abstract: Hydroxyapatite(HAP) ultrafine powder was prepared from phosphate acid and calcium hydroxide by Sol-gel method. The effect of preparing conditions, such as the pHvalue of the system and the titration speed, on the properties and components of productwas studied by thermodynamic analysis and experiments. The results show that the pure and ultrafine HAP powder can be obtained through strict control of titrationway and speed. The pHvalue of systemshould be controlled in the range of 11~12 to prepare pureHAP. The relative density of the productHAP is 2.97 g/cm3, and the size of the HAP powder less than 0.05μm determined by SEM. According to the XRD there are no impurities in the product HAP
