摘要
采用溶胶-凝胶法制备磷灰石-硅灰石(AW)生物活性玻璃陶瓷纳米前驱体粉末,前驱体粉末经热处理后,采用有机泡沫浸渍成型,烧结制备了多孔AW生物活性玻璃陶瓷。通过差热和热重分析、X射线衍射分析、红外图谱分析、扫描电镜、透射电镜等分析测试方法,对AW前驱体粉末的微观结构,及其在煅烧过程中的晶相转变进行了研究,确定了制备纳米级AW前驱体粉的最佳工艺条件,推测出微晶玻璃体中各晶相的析出温度,确定了溶胶-凝胶法制备多孔AW玻璃陶瓷的煅烧工艺,体外模拟体液浸泡实验表明材料具有较高的矿化功能和生物活性。
The porous apatite-wollastonite bioactive glass-ceramic （AW-GC） was fabricated from nano-precursor powder derived from sol-gel process, and shaped by dipping with the polymer foam. By means of DSC/TG, XRD, FTIR, SEM, TEM, we studied the microstructure of nano-precursor powder, the crystal phase transformation during calcination process, and speculated the formation temperature of the crystal phase in the glass-ceramic, gained the best preparation conditions of the AW nano-precursor and the best calcining process of the porous AW-GC. The in vitro simulated body fluid （SBF） soaking indicates that the materials have high mineral- ization and bioactivity.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2009年第1期97-100,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(50672129)
教育部博士点基金(20060610024)
重庆市科技攻关重点项目(CSTC2007AB7014)
