超临界流体干燥法制备医用纳米羟基磷灰石  

Preparation of Medical Nano-hydroxylapatite Powder by Supercritical Fluid Dry Method

作　　者：李青[1] 王瑞[2] 黎敏霞[3] 李伟[4] 

机构地区：[1]北京服装学院材料工程学院,北京100029 [2]新乡医学院,河南新乡453000 [3]北华大学基础部,长春132001 [4]河南师范大学化学与环境科学学院,河南新乡453007

出　　处：《河南师范大学学报（自然科学版）》2005年第1期142-144,共3页Journal of Henan Normal University(Natural Science Edition)

摘　　要：应用超临界流体干燥法制备医用纳米羟基磷灰石.以Ca(NO3)2·4H2O和(NH4)2HPO4为原料,采用超临界流体干燥法(SCFD)制备了纳米羟基磷灰石,并用XRD,TEM,FTIR等手段进行了表征.超临界干燥法制备的羟基磷灰石具有结晶性好、分散性好、尺寸分布均匀,呈针状结晶,长度为100～200 nm,宽度10～15 nm.用溶胶凝胶结合超临界流体干燥法可以制备出颗粒大小均匀、分散性好的纳米羟基磷灰石.To study medical nano-hydroxylapatite powder preparations,Nano-hydroxylapatite powder were prepared by Sol-Gel and supercritical fluid dry method(SCFD) with Ca(NO_3)·4H_2O and (NH_4)_2HPO_4 as the starting materials.The powder were characterized by the means of XRD,TEM and IR.The results indicated that powder by SCFD had the advantages of narrow distribution and good dispersivity.The particle size of hydroxyapatite crystals was small size (length: 100~200 nm, width: 10~15 nm).Nano-hydroxyapatite powder with uniform particle size can be preparated by Sol-Gel and SCFD.

关 键 词：纳米粉体 羟基磷灰石晶体 超临界流体干燥 

分 类 号：TQ127[化学工程—无机化工]