Alecu Andrada-Elena, Costea Claudiu-Constantin, Surdu Vasile-Adrian, Voicu Georgeta, Jinga Sorin-Ion, Busuioc Cristina
Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, RO-060042 Bucharest, Romania.
Gels. 2022 Sep 9;8(9):574. doi: 10.3390/gels8090574.
In this work, calcium magnesium silicate ceramics were processed through the sol-gel method in order to study the crystalline and morphological properties of the resulting materials in correlation with the compositional and thermal parameters. Tetraethyl orthosilicate and calcium/magnesium nitrates were employed as sources of cations, in ratios specific to diopside, akermanite and merwinite; they were further subjected to gelation, calcination (600 °C) and thermal treatments at different temperatures (800, 1000 and 1300 °C). The properties of the intermediate and final materials were investigated by thermal analysis, scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction and Rietveld refinement. Such ceramics represent suitable candidates for tissue engineering applications that require porosity and bioactivity.
在这项工作中，通过溶胶-凝胶法制备了硅酸钙镁陶瓷，以研究所得材料的晶体和形态特性与组成和热参数之间的关系。正硅酸四乙酯和钙/镁硝酸盐被用作阳离子源，其比例特定于透辉石、钙镁黄长石和镁蔷薇辉石；它们进一步经过凝胶化、煅烧（600℃）以及在不同温度（800、1000和1300℃）下的热处理。通过热分析、扫描电子显微镜、能量色散X射线光谱、傅里叶变换红外光谱、X射线衍射和Rietveld精修对中间材料和最终材料的性能进行了研究。此类陶瓷是需要孔隙率和生物活性的组织工程应用的合适候选材料。
