采用溶液法制备了聚己内酯(PCL)/氧化石墨烯(GO)、PCL/石墨烯(GE)及PCL/接枝石墨烯(gGE)复合材料,采用偏光显微镜(POM)、差示扫描量热仪(DSC)、热重分析仪(TGA)研究了复合材料的结晶形态、等温结晶动力学及耐热分解性.POM结果表明,GO、GE及gGE的加入能有效地增加PCL的成核密度,使其球晶生长速率增加.DSC结果表明,GO、GE及gGE作为成核剂能有效地加快PCL的结晶速率,当GO和gGE的质量分数为0.2％时,PCL的结晶速率达到最大值.TGA结果表明,PCL的最大失重速率温度为310℃,GO、GE及gGE的质量分数为0.3％时,复合材料的最大失重速率温度分别为320℃、300℃及280℃,GO的加入使PCL的耐热分解性增强,但GE及gGE的加入使PCL的耐热分解性降低.
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