A low-temperature sol-gel route for the synthesis of bioactive calcium silicates
A low-temperature sol-gel route for the synthesis of bioactive calcium silicates
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DOI：
10.1016/j.cclet.2013.01.009
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发表时间：
2013-02
影响因子：
9.1
通讯作者：
Yong-Sen Sun;Ai-ling Li;F. Xu;D. Qiu
中科院分区：
文献类型：
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作者：
Yong-Sen Sun;Ai-ling Li;F. Xu;D. Qiu
分别以四水硝酸钙和2-甲氧基乙氧基钙为钙源合成了溶胶凝胶法生物活性硅酸钙，并在不同温度下进行了钙化。采用扫描电子显微镜、热重分析、固体29Si核磁共振、氮气吸附、模拟体液浸泡等方法对其结构特征和体外生物活性进行了研究。证实了2-甲氧基乙氧基钙是一种很有前途的低温稳定化生物活性硅酸钙钙前驱体。这对有机-无机杂化复合材料的制备具有一定的指导意义。
Sol–gel-derived bioactive calcium silicates, synthesized from calcium nitrate tetrahydrate and calcium 2-methoxyethoxide as calcium precursor respectively, were calcified under different temperatures. A series of techniques including SEM, TGA, solid29Si NMR, nitrogen adsorption, and simulated body fluids (SBF) soaking were employed to study their textural features and in vitro bioactivity. It was confirmed that calcium 2-methoxyethoxide is a promising candidate of calcium precursor for bioactive calcium silicates stabilized under low temperatures. This has implications in fabrication of organic–inorganic hybrid composites.