以性能优异的生物可降解高分子聚己内酯(PCL)与壳聚糖(CS)进行冰醋酸酸溶复合,并采用流延法制备CS∶PCL质量比分别为0∶100、5:95、10∶90、15∶85、20∶80、100∶0的CS/PCL复合膜,通过XRD、FTIR、1HNMR、SEM及AFM对复合膜进行了微观形态与结构表征.结果表明:PCL与CS具有良好的相容性,二者分子间形成了较强的氢键,且伴有PCL端位羧基与CS侧链羟基反应生成了新的化学键,使CS/PCL复合膜结构稳定.CS/PCL复合膜的复合比对其结构特征及微观形态影响较大.CS/PCL(10∶90)复合膜的结晶度为29.97％,孔隙率达到85.61％,呈现表面防渗漏、内部多孔且连通的微观结构,初步确定10∶90为二者的最佳复合比.不同复合比的CS/PCL复合膜的微观形态与结构分析为其开发、应用提供了重要的理论依据.
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