水热腐蚀对羟基磷灰石形貌及生物活性的影响

发布时间：2018-07-06 14:10

  本文选题：羟基磷灰石 + 水热腐蚀　； 参考：《人工晶体学报》2016年02期

【摘要】：以透明羟基磷灰石(HAp)陶瓷为原材料,采用水热工艺对其表面进行腐蚀处理,然后将HAp浸泡在模拟体液(SBF)中进行体外生物活性评价,研究了水热腐蚀温度对HAp表面形貌及生物活性的影响。利用扫描电镜(SEM)、透射电镜(TEM)、X射线衍射仪(XRD)、X射线能谱仪(EDS)和激光扫描共聚焦显微镜(LSCM)等对样品进行表征。结果表明:随水热腐蚀温度的提高,HAp表面呈现先疏松后致密的结构变化,而生物活性先升高后逐渐降低,这与HAp暴露晶面的界面能差异有关。160℃水热腐蚀10 h后HAp表面疏松多孔,表现出更加优越的体外生物活性。
[Abstract]:Transparent hydroxyapatite (HAP) ceramics were used as raw materials. The surface of HAP was corroded by hydrothermal process. Then HAP was immersed in simulated body fluid (SBF) for in vitro bioactivity evaluation. The effect of hydrothermal corrosion temperature on the surface morphology and bioactivity of HAP was studied. The samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and laser scanning confocal microscopy (LSCM). The results showed that with the increase of hydrothermal corrosion temperature, the surface of HAP showed a structural change of looseness and then density, while the biological activity increased first and then decreased gradually. This is related to the interface energy difference of HAP exposed to crystal plane. The surface of HAP is porous and porous after 10 h hydrothermal corrosion at .160 鈩，

本文编号：2103034