摘要
以磷酸铵和硝酸钙为反应前驱物，呆用沉淀法在室温下合成纯度高并且具有良好电泳性能的羟基磷灰石粉末·通过傅里叶变换红外光谱仪、X-射线衍射仪和扫描电子显微镜对所合成的羟基磷灰石进行表征。研究结果表明：在合成过程中不断添加1：1（体积比）氨水使反应体系的pH值处于11附近可获得组成符合羟基磷灰石化学计量的沉淀产物．沉淀产物经过72h陈化处理后多数颗粒的粒度为2～4μm．电泳性能良好；合成产物经800℃以上高温煅烧后能得到纯净的羟基磷灰石．在1200℃下煅烧2h未发现羟基磷灰石分解．
The high-purity hydroxyapatite powders with good electrophoretic properties are synthesized by precipitation process using (NH_4)_3PO_4 and Ca(NO_3)_2 at the ambient temperature.The synthesized powders are characterized by FTIR,XRD and SEM.The results show that the stoichiometric hydroxyapatite powders can be obtained if pH value of the reaction system is maintained at 11 by adding ammonium hydroxide solution (V_ NH_4OH :V_ H_2O ).The size of most particles of the synthesized powders after aging for 72h is 2~4μm,and the powders have good electrophoretic properties.High-purity hydroxyapatite powders can be obtained by calcining the synthesized powders at temperatures above 800℃,and no hydroxyapatite decomposition is observed in calcining treatment at temperature up to 1200℃.
出处
《长江大学学报（自科版）（上旬）》
CAS
2006年第4期49-52,共4页
JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG
基金
湖北省自然科学基金项目(2004ABA113)
