Bioactive powders of silicon substituted hydroxyapatites containing 1.4-4.3 wt % Si were synthesized by precipitation from aqueous solutions of calcium nitrate and ammonium (sodium) hydrophospate. Tetra-ethoxysilane and sodium silicate in basic media were used as a source of silicon. Using scanning electron microscopy, surface morphology of the obtained products was studied. It has been found that procedure us-ing sodium silicate allows obtaining of materials with 100-200 nm particle size. Procedure that utilizes tet-raethoxysilane leads to 40-100 nm particles. Chemical, X-ray phase analysis and infrared spectroscopy of samples annealed at 900 °C indicate the formation of monophase crystalline products possessing apatite structure.udWhen you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35110
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机译:通过从硝酸钙和磷酸铵(钠)的水溶液中沉淀来合成含有1.4-4.3wt%Si的硅取代的羟基磷灰石的生物活性粉末。在碱性介质中使用四乙氧基硅烷和硅酸钠作为硅的来源。使用扫描电子显微镜,研究了所得产物的表面形态。已经发现,使用硅酸钠的程序允许获得具有100-200nm粒径的材料。利用叔丁氧乙氧基硅烷的方法会产生40-100 nm的颗粒。在900°C退火的样品的化学,X射线相分析和红外光谱表明,形成具有磷灰石结构的单相晶体产品。 ud当引用该文档时,请使用以下链接http://essuir.sumdu.edu。 ua / handle / 123456789/35110
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