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首页> 外文期刊>Acta biomaterialia >Structural characterization and physical properties of P 2O 5-CaO-Na 2O-TiO 2 glasses by Fourier transform infrared, Raman and solid-state magic angle spinning nuclear magnetic resonance spectroscopies
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Structural characterization and physical properties of P 2O 5-CaO-Na 2O-TiO 2 glasses by Fourier transform infrared, Raman and solid-state magic angle spinning nuclear magnetic resonance spectroscopies

机译：P 2O 5-CaO-Na 2O-TiO 2玻璃的结构表征和物理性质的傅里叶变换红外，拉曼和固态幻角旋转核磁共振光谱

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摘要

Phosphate-based glasses have been investigated for tissue engineering applications. This study details the properties and structural characterization of titanium ultra-phosphate glasses in the 55(P 2O 5)- 30(CaO)-(25 - x)(Na 2O)-x(TiO 2) (0 ≤ x ≤ 5) system, which have been prepared via melt-quenching techniques. Structural characterization was achieved by a combination of X-ray diffraction (XRD), and solid-state nuclear magnetic resonance, Raman and Fourier transform infrared spectroscopies. Physical properties were also investigated using density, degradation and ion release studies; additionally, differential thermal analysis was used for thermal analysis of these glasses. The results show that with the addition of TiO 2 the density and glass transition temperature increased whereas the degradation and ion release properties are decreased. From XRD data, TiP 2O 7 and CaP 2O 6 were detected in 3 and 5 mol.% TiO 2-containing glasses. Magic angle spinning nuclear magnetic resonance results confirmed that as TiO 2 is incorporated into the glass; the amount of Q 3 increases as the amount of Q 2 consequently decreases, indicating increasing polymerization of the phosphate network. Spectroscopy results also showed that the local structure of glasses changes with increasing TiO 2 content. As TiO 2 is incorporated into the glass, the phosphate connectivity increases, indicating that the addition of TiO 2 content correlates unequivocally with an increase in glass stability.
机译：已经对基于磷酸盐的玻璃进行了组织工程应用的研究。这项研究详细介绍了55（P 2O 5）-30（CaO）-（25-x）（Na 2O）-x（TiO 2）（0≤x≤5）中的钛超磷酸盐玻璃的性能和结构特征通过熔融淬火技术制备的系统。通过X射线衍射（XRD）和固态核磁共振，拉曼光谱和傅立叶变换红外光谱的结合来实现结构表征。还使用密度，降解和离子释放研究来研究物理性质;另外，差热分析被用于这些玻璃的热分析。结果表明，随着TiO 2的加入，密度和玻璃化转变温度增加，而降解和离子释放性能下降。根据XRD数据，在3mol％和5mol％的含TiO 2的玻璃中检测到TiP 2O 7和CaP 2O 6。幻角旋转核磁共振结果证实，将TiO 2掺入玻璃中;随着Q 2量的减少，Q 3的量增加，这表明磷酸盐网络的聚合增加。光谱结果还表明，玻璃的局部结构随TiO 2含量的增加而变化。当将TiO 2掺入玻璃中时，磷酸盐的连接性增加，表明TiO 2含量的增加与玻璃稳定性的增加无疑相关。

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