Apatite-Forming Ability of Calcium Phosphate Glass-Ceramics Improved by Autoclaving
Apatite-Forming Ability of Calcium Phosphate Glass-Ceramics Improved by Autoclaving
复制标题
高压灭菌提高磷酸钙微晶玻璃磷灰石形成能力
DOI：
10.4028/www.scientific.net/kem.254-256.753
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
M. Nogami
中科院分区：
文献类型：
--
作者：
T. Kasuga;T. Fujimoto;C. Wang;M. Nogami
组成为60 CaO-30 P2 O 53 TiO 2 - 7 Na 2 O的磷酸钙转化微晶玻璃在37 °C的模拟体液（SBF）中具有形成磷灰石的能力，在SBF中浸泡20天后，在其表面形成骨状磷灰石。在本工作中，玻璃陶瓷在37 °C下浸泡在SBF中之前在121 °C下在SBF或水中进行高压灭菌。在37 °C的SBF中浸泡3天后，在高压蒸汽处理的玻璃陶瓷上开始形成骨状磷灰石;即使在121 °C的水中高压蒸汽处理后，磷灰石形成能力也可以显著提高。虽然表面周围的残余玻璃相在水中高压灭菌期间溶解，但相中的钛离子确实留在表面周围。X射线光电子能谱分析表明，在热压过程中，水合二氧化钛基团在表面周围形成新的。
Calcium phosphate invert glass-ceramic with a composition of 60CaO -30P2O53TiO2-7Na2O in mol% has an apatite-forming ability in simulated body fluid (S BF) at 37 °C; on its surface, the bonelike apatite forms after 20 days of soaking in SBF. In the present work the glass-ceramic was autoclaved in SBF or water at 121 °C prior to the soaking in SBF at 37 °C. Bonelike apatite started to form on the autoclaved glass-ceramic after 3 days of soaking in SBF at 37 °C; the apatite-forming ability could be drastically improved even after autoclaving in water at 121 °C. Although the residual glassy phase around the surface dissolved duri ng the autoclaving in water, titanium ion in the phase did stay around the surface. X-ray photoelectron spectroscopic analysis suggested that the hydrated titania groups form newly ar ound the surface during the autoclaving.