Fujishiro Y, Yabuki H, Kawamura K, Sato T, Okuwaki A
Department of Molecular Chemistry and Engineering, Faculty of Engineering, Tohoku University, Sendai, Japan.
J Chem Technol Biotechnol. 1993;57(4):349-53. doi: 10.1002/jctb.280570409.
Preparation of hydroxyapatite was carried out by a homogeneous precipitation technique using hydrothermal reactions of Ca(EDTA)2- and PO4(3-) at 130-250 degrees C and pH 4-10. Hydroxyapatite and monetite were formed above pH 6 and below pH 4, respectively. Needle-like hydroxyapatite was formed at high temperatures above 130 degrees C. The length of the needle-like hydroxyapatite crystal increased with increasing working solution pH and temperature.
通过均匀沉淀技术，利用Ca(EDTA)2-和PO4(3-)在130 - 250℃和pH值4 - 10下的水热反应制备羟基磷灰石。分别在pH值高于6和低于4时形成了羟基磷灰石和磷酸二氢钙。在高于130℃的高温下形成了针状羟基磷灰石。针状羟基磷灰石晶体的长度随着工作溶液pH值和温度的升高而增加。
