以丙三醇为电解液体系制备出高有序的TiO2纳米管,通过模拟人体体液(SBF)溶液浸泡和体外细胞实验探讨不同尺寸TiO2纳米管生物活性的差异.利用扫描电子显微镜(SEM)、X射线衍射(XRD)等对样品进行表征.结果表明,相同电压下,随着阳极氧化电压的增加,TiO2纳米管管长和管径呈增加趋势.通过羟基磷灰石(HA)的沉积情况、MG-63细胞粘附情况、MTT检测分析,可以得出,随TiO2纳米管管长和管径的增加,诱导HA沉积能力和促进细胞粘附增殖能力增强,表现出较好的生物活性.
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