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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Synthesis and structural characterization of P2O5-CaO-Na2O sol-gel materials
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Synthesis and structural characterization of P2O5-CaO-Na2O sol-gel materials

机译：P2O5-CaO-Na2O溶胶-凝胶材料的合成与结构表征

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摘要

Ternary phosphate-based glasses in the system P2O5-CaO-Na2O were synthesized using the sol-gel approach. Glasses in this system have the potential for use as bioactive materials. A mixture of mono- and dialkyl phosphate PO(OH)(3-x)(OC2H5)(x) (x=1,2) and alkoxides of sodium and calcium in an ethylene glycol solution were used as precursors. One of the compositions has also been synthesized by sonocatalysis (application of ultrasonic vibration to the sol). The systems synthesized, which remain fully amorphous even after calcination at 400 degrees C given the appropriate composition, have been characterized using X-ray diffraction (XRD). Thermal properties have been examined by means of thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The structure of the phosphate network has been studied as a function of composition using Fourier transform infrared spectroscopy (FT-IR) and P-31 MAS NMR. (C) 2007 Elsevier B.V. All rights reserved.
机译：使用溶胶-凝胶法合成了P2O5-CaO-Na2O系统中的基于三元磷酸盐的玻璃。该系统中的玻璃具有用作生物活性材料的潜力。磷酸单（烷基）酯和磷酸二烷基酯PO（OH）（3-x）（OC2H5）（x）（x = 1,2）与乙二醇溶液中钠和钙的醇盐的混合物用作前体。还已经通过声催化（将超声振动施加到溶胶上）合成了一种组合物。合成的系统已经使用X射线衍射（XRD）进行了表征，即使在400摄氏度下煅烧，即使给定了适当的组成，它们仍保持完全非晶态。通过热重分析（TGA）和差热分析（​​DTA）检查了热性能。已使用傅立叶变换红外光谱（FT-IR）和P-31 MAS NMR研究了磷酸盐网络的结构与组成的关系。 （C）2007 Elsevier B.V.保留所有权利。

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