溶胶凝胶
纳米
乙二醇
粒径
材料科学
硅胶
化学工程
溶剂
透射电子显微镜
粉末衍射
热分析
化学
纳米技术
热的
有机化学
复合材料
结晶学
气象学
工程类
物理
作者
Yuan Yuan,Changsheng Liu
出处
期刊:PubMed
日期:2002-04-01
卷期号:24 (2): 129-33
摘要
To synthesize nanometer hydroxyapatite (HAP) by sol-gel method from Ca (NO3)2.4H2O and PO (CH3O)3 with water and ethanol as solvents and to study the factors that can affect the formation of sol-gel, including the type of solvents, amount of solvents, pH value, as well as properties under the condition of low temperature combustion of dried gel.The viscosities of sol were determined on WU viscosimeter. TG-DTA was used to analyze the thermal procedure of dried gel by increasing temperature. Characterization of the dried gel and powder after combustion were evaluated by X-ray diffraction and infrared spectrum. The morphology of the powder was observed by transmission electron microscopy.Stable and homogeneous gel could be obtained at appropriate pH value when ethylene glycol was added into solvent. The dried gel had the feature of low temperature combustion. HAP powder with particle size of 50 nm was directly prepared.Nanometer HAP powder with uniform particle size can be synthesized by sol-gel method.
科研通智能强力驱动
Strongly Powered by AbleSci AI