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生物活性玻璃/聚乳酸组织工程支架在SBF溶液中的降解和矿化性能

, PP. 96-99

Keywords: 生物活性玻璃,聚乳酸,组织工程支架,降解,矿化

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Abstract:

利用扫描电镜、X衍射仪以及红外漫反射仪,并通过对生物活性玻璃/聚乳酸组织工程支架在模拟体液(SBF)中失重率及模拟体液pH值的变化的检测,系统研究了生物活性玻璃/聚乳酸组织工程支架在SBF中的降解和矿化性能。结果发现:随着含有生物活性玻璃的聚乳酸支架在SBF溶液中浸泡时间的增长,SBF的pH值不断下降;含有生物活性玻璃的聚乳酸支架的质量不断下降。XRD、FTIR谱图和SEM图像表明:在SBF中浸泡一定时间后,有无定型的或结晶不完善的磷灰石在含有生物活性玻璃的聚乳酸支架的表面沉积形成。

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