【摘要】 以聚己内酯(PCL)为基底、羟基磷灰石(HA)为增强剂,采用溶液浇铸法制备HA/PCL复合材料,考察了浸渍于模拟体液(SBF)中的复合材料生物活性,并用X衍射(XRD)和傅立叶变换红外光谱(FT IR)对材料的结构和组成进行表征。结果表明:HA/PCL(wHA=0.30)复合材料在SBF中浸渍14 d后,即在其表面形成一层弱结晶的碳磷灰石(CHA)覆盖层,显示良好的生物活性。更多还原

【Abstract】 The composites of hydroxyapatite（HA） nanocrystals with polycaprolacton（PCL） prepared through solvent-cast technique were immersed in Simulated Body Solution（SBF） to examine its bioactivity.Their structure and component were characterized by means of scanning electron microscopy（SEM）,X-ray diffraction（XRD） and Fourier transform infrared（FTIR）.The results show that the surfaces of HA/PCL(w_HA=0.30) composites are covered by a coating of carbonated hydroxyapatite（CHA） with low crystallinity,and the composites is in high bioactivity.更多还原