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用复合掺杂方法改性一种新型骨修复材料聚磷酸钙(CPP)以期综合提高材料的理化性能,其中的掺杂元素有钾(K)、钠(Na)和锶(Sr).通过X射线衍射分析(XRD)表征复合掺杂后材料的晶体结构并通过等离子发射光谱(ICP)分析掺杂后CPP内主要元素含量.以生理盐水为降解介质,通过失重法,钼蓝分光光度法和EDTA-钙红绿素滴定法分析材料的降解性能.用扫描电镜(SEM)观察在PBS矿化介质中浸泡样品的表面形貌,定性描述表面矿化沉积物的情况.通过检测多孔材料的抗压强度表征其力学性能.结果表明,复合掺杂改性不同程度地提高了材料的降解、矿化和力学性能,NSCPP和KSCPP材料相对于单一掺杂材料具有更显著的优势.

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