正硅酸乙酯
材料科学
生物活性玻璃
热重分析
溶胶凝胶
化学工程
差热分析
玻璃化转变
纳米复合材料
二氧化硅
傅里叶变换红外光谱
氧化钠
核化学
矿物学
氧化钙
复合材料
化学
纳米技术
冶金
工程类
衍射
聚合物
物理
光学
作者
Aymen Hadji,Alizarin Merah,O. Guellati,M. Guérioune
出处
期刊:International Journal of Engineering and Applied Sciences
[Engineering Research Publication ERP]
日期:2018-02-01
卷期号:5 (2): 257282-
被引量:2
摘要
In this paper, we present our results on the synthesis and characterization of silicon dioxide or silica calcium oxide and phosphorus pentoxide (SiO2-CaO-P2O5) glass by means of the sol-gel method where previous works have used tetraethyl orthosilicate (TEOS) as SiO2 precursor, but here we are using the commercialized aerosol SiO2. Indeed, our synthesis of this gel-glass nanocomposite was carried out using the aerosol SiO2, calcium nitrate tetrahydrate (CaNO3.4H2O) and sodium hydrogenphosphate (Na2HPO4) as precursors of SiO2, CaO and P2O5 respectively. The characterization was carried out by infrared spectroscopy (FTIR), X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM) to study their chemical bonding, structural and morphological properties of the resulting amorphous glass. These techniques conducted us to detect the chemical modifications induced by modifying the Ca/P molar ratio. In addition, the thermal properties of the synthesized gel-glass materials were studied using thermogravimetric and differential thermal analysis (TG/DTA). The results revealed that the glass transition temperature is around 600degC, with the aim to convert them into ceramic powders through calcinations treatment. The results gave us porous bioactive materials that can be suitable for many applications such as prolonged-release drug or bone tissue repairing.nbspnbsp
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