Synthesis and thermal stability of sodium, magnesium co-substituted hydroxyapatites
Synthesis and thermal stability of sodium, magnesium co-substituted hydroxyapatites
复制标题
钠、镁共取代羟基磷灰石的合成及热稳定性
DOI：
10.1039/b511867k
复制
发表时间：
2006
影响因子：
--
通讯作者：
J. Ferreira
中科院分区：
文献类型：
--
作者：
S. Kannan;J. Rocha;J. Ferreira
采用水相沉淀法制备了钠镁共取代羟基磷灰石（Hap）和β-磷酸三钙混合物。XRD、FT-IR和热分析结果表明，添加剂（Na和Mg）对磷灰石的热稳定性有影响。元素分析也证实了磷灰石结构中存在Na+和Mg 2+离子。计算的晶格参数的磷灰石结构上的元素的组合取代被发现有收缩的a-轴和膨胀的c-轴，以及相对于纯Hap的晶胞体积。
Sodium and magnesium co-substituted hydroxyapatite (Hap) and β-tricalcium phosphate mixtures were prepared through an aqueous precipitation method. Characterization results from XRD, FT-IR and thermal analysis have indicated the influence of additives (Na and Mg) on the thermal stability of the apatites. The elemental analyses have also confirmed the presence of Na+ and Mg2+ ions in the apatite structure. Calculated lattice parameters for the combined substitution of elements on the apatite structure were found to have contraction of the a-axis and expansion of the c-axis as well as of the unit cell volume with respect to that of pure Hap.