Structural evolution of sol-gel-derived hydroxyapatite

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 987654321/2985

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/987654321/2985

题名:	Structural evolution of sol-gel-derived hydroxyapatite
作者:	Liu DM Yang QZ Troczynski T Tseng WJJ
贡献者:	材料所
关键词:	sol-gel thermal aging hydroxyapatite structural evolution carbonated apatite FTIR
日期:	2002
上传时间:	2009-12-11 09:54:07 (UTC+8)
摘要:	Structural evolution upon transformation of sol to gel, and get to final ceramic during the synthesis of hydroxyapatite is investigated using Fourier transform infrared (FTIR) analysis, X-ray diffraction (XRD), thermal behavior (DTA and TGA), and electron microscopy examination (SEM/TEM). The sol was first thermally aged at 45 degreesC for various time periods up to 120 min. The colloidal sol, which may have an oligomeric structure, was relatively stable against coagulation. Upon drying, the set particles consolidated into dry gel through van der Waals attraction, and showed X-ray amorphous phosphate structure. The solid gels showed a particulate microstructure, composed of primary particles of about 8-10 nm in diameter. The amorphous gel transformed into crystalline apatite at temperatures > 300degreesC. The calcined gels showed a nano-scale microstructure, with grains of 20 50 nm in diameter. Through,in appropriate heat treatment between 300 and 400degreesC, the apatite prepared using current process exhibits a nano-scale, low-crystallinity, carbonated apatitic structure, which closely resembles that of human bone apatite. (C) 2002 Published by Elsevier Science Ltd.
關聯:	BIOMATERIALS Volume: 23 Issue: 7 Pages: 1679-1687
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	475	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.....