溶胶-凝胶法制备纳米羟基磷灰石粉体  

Synthesis of Nano-Sized Hydroxyapatite by Powder Sol-Gels Method

作　　者：徐晓虹[1] 吴建锋[1] 华全[1] 倪扬[1] 闫宇嵩[1] 沈薇薇[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《硅酸盐学报》2012年第2期266-270,共5页Journal of The Chinese Ceramic Society

摘　　要：以四水合硝酸钙和五氧化二磷为原料,无水乙醇为溶剂,采用溶胶-凝胶法制备了含CO32-的羟基磷灰石(hydroxyapatite,HAP)粉体。采用热重-差热分析、X射线衍射、透射电子显微镜、Fourier变换红外光谱等研究了反应体系pH值、反应温度及前驱体热处理温度等因素对产物结构与性能的影响规律,结果表明:采用溶胶-凝胶工艺,调控反应体系的pH、反应温度及前驱体的热处理温度是获得纯度高、分散性较好的纳米HAP粉体的关键。pH值为8.0、反应温度为30℃,经600℃热处理可获得到粒径为40～50nm的HAP纳米粉体。The nano-sized hydroxyapatite （HAP） powder was synthesized with Ca（NO3）2＂4H20 and P205 by a sol-gels process. The effects of pH value of solvent, reaction temperature and heated temperature on the crystallinity and morphology of nano-sized HAP were investigated by thermogravimetric/differential thermal analyzer, X-ray diffraction, transmission electron microscopy and Fourier transform infrared spectroscopy, respectively. The nano-particles of HAP with a higher crystallinity and a good disparity could be controlled via the adjustment of the process parameters such as reaction temperature, pH value of solution and heat treatment tem- perature. The results show that the nano-particles of HAP containing CO32- with the good crystallinity and the particle sizes of 40-50 nm could be obtained at the reaction temperature of 30 ℃, the pH value of 8 and the heat treatment temperature of 600 ℃.

关 键 词：溶胶-凝胶法:羟基磷灰石 纳米粉体 制备工艺 显微结构 

分 类 号：R318.08[医药卫生—生物医学工程]