Water-based sol-gel synthesis of hydroxyapatite: process development

文化大學機構典藏 CCUR > 理工學院 > 工學院 > 化學工程與材料工程學系暨碩士班 > 期刊論文 > Item 987654321/3029

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/3029

题名:	Water-based sol-gel synthesis of hydroxyapatite: process development
作者:	Liu DM Troczynski T Tseng WJ
贡献者:	材料所
关键词:	sol-gel synthesis hydroxyapatite dip coating
日期:	2001
上传时间:	2009-12-14 10:29:36 (UTC+8)
摘要:	Hydroxyapatite (HA) ceramics were synthesized using a sol-gel route with triethyl phosphite and calcium nitrate as phosphorus and calcium precursors, respectively. Two solvents, water and anhydrous ethanol, were used as diluting media for HA sol preparation. The sols were stable and no gelling occurred in ambient environment for over 5 days. The sols became a white gel only after removal of the solvents at 60 degreesC. X-ray diffraction showed that apatitic structure first appeared at a temperature as low as 350 degreesC. The crystal size and the HA content in both gels increase with increasing calcination temperature. The type of initial diluting media (i.e., water vs. anhydrous ethanol) did not affect the microstructural evolution and crystallinity of the resulting HA ceramic. The ethanol-based sol dip-coated onto a Ti substrate, followed by calcination at 450 degreesC, was found to be porous with pore size ranging from 0.3 to 1 mum. This morphology is beneficial to the: circulation of physiological fluid when the coating is used for biomedical applications. The satisfactory adhesion between the coating and substrate suggests its suitability for load-bearing uses. (C) 2001 Elsevier Science Ltd. All rights reserved.
關聯:	BIOMATERIALS Volume: 22 Issue: 13 Pages: 1721-1730
显示于类别:	[化學工程與材料工程學系暨碩士班] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	Text	2136	检视/开启

在CCUR中所有的数据项都受到原著作权保护.

数据加载中.....