采用冷冻干燥/粒子沥滤复合法制备聚己内酯(PCL)多孔支架,通过扫描电镜对支架的三维结构进行了表征,并计算了支架孔隙率.研究结果表明,与单一冷冻干燥法或粒子沥滤法相比,复合法制备的PCL支架具有孔隙率高(86%),孔隙结构均匀、孔隙连通性好、孔径可控等特点,支架结构可以通过调整预冷冻温度和造孔剂粒径进行控制.
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