采用氯化钠(NaCl)、聚氧化乙烯(PEO)填充混合的方法制备聚乳酸(PLA)多孔复合材料,借助于扫描电镜、差示扫描量热分析、X射线衍射等测试方法,研究了配方与混炼工艺对多孔材料泡孔结构、孔隙率和热性能的影响.结果表明,提高NaCl含量使多孔材料的孔隙率增大;PEO的加入使多孔材料出现连通孔结构;当NaCl含量为80％,PEO含量为10％,混炼机转速为700 r/min时的泡孔连通性最好,孔隙率高达88.3％;随着一定量PEO的加入,PLA多孔材料的泡孔连通性增强,结晶度降低;提高混炼机转速可增强泡孔连通性,提高结晶度.
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