Faculty of Mechanical Engineering, Bialystok University of Technology, 45C Wiejska Street, 15-351 Bialystok, Poland.
Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland.
Sensors (Basel). 2021 Mar 15;21(6):2054. doi: 10.3390/s21062054.
The effects of Sm content on the optical properties and bioactivity of 13-93 bioactive glass were presented. Sm doped glass fibers drawn from bioactive glass were analyzed in simulated body fluid (SBF) for the determination of ion release. Optical analysis of the Sm ions in bioactive glass fibers was used for degradation monitoring. While the fibers were immersed in SBF solution, changes in their luminescence spectra under 405 nm laser excitation were measured continuously for 48 h. The morphology of the fibers after the immersion process was determined by SEM/EDS. It was shown that the proposed approach to the analysis of changes in Sm ion luminescence is a sensitive method for the monitoring of degradation processes and the formation of hydroxycarbonate-apatite (HCA) layers on glass fiber surfaces. SEM/EDS measurements showed a significant deterioration on the surface of the fibers and the formation of HCA on 13-93_02Sm bioactive glass. The optical analysis of the time constant indicated that bioactive glass fibers doped with 2 %mol Sm degrade at a rate almost five times slower than 13-93_02Sm.
研究了 Sm 含量对 13-93 生物活性玻璃光学性能和生物活性的影响。在模拟体液（SBF）中分析了从生物活性玻璃中拉制的掺 Sm 玻璃纤维，以确定离子释放情况。利用生物活性玻璃纤维中 Sm 离子的光学分析进行降解监测。在纤维浸入 SBF 溶液的过程中，连续测量 405nm 激光激发下其发光光谱在 48 小时内的变化。通过 SEM/EDS 测定纤维浸出后的形貌。结果表明，该研究提出的分析 Sm 离子发光变化的方法是监测降解过程和玻璃纤维表面形成羟基碳酸磷灰石（HCA）层的敏感方法。SEM/EDS 测量表明，纤维表面明显恶化，13-93_02Sm 生物活性玻璃表面形成 HCA。时间常数的光学分析表明，掺杂 2%mol Sm 的生物活性玻璃纤维的降解速度比 13-93_02Sm 慢近五倍。
