热塑性淀粉/聚乙烯醇/蒙脱土三元纳米复合材料

用熔融挤出的方法制备了甘油塑化热塑性淀粉（TPS）/聚乙烯醇（PVA）/蒙脱土（MMT）纳米复合材料，添加蒙脱土和聚乙烯醇用以提高热塑性淀粉材料的力学性能。 在相对湿度50%的条件下，复合材料的XRD衍射谱图和透射电子显微镜测试表明，MMT以剥离状态均匀分布在TPS/PVA基体中；力学测试表明，当MMT的质量分数从0％增至5％时，复合材料的力学性能明显提高。 当蒙脱土的质量分数为3%时，复合材料最大抗张强度达到13.24 MPa，杨氏模量达到61.46 MPa。 这说明蒙脱土在复合材料中可以起到物理交联点的作用，提高了复合材料的力学性能。

Thermoplastic Starch/Polyvinyl Alcohol/Montmorillonite Nanocomposites

Melt extrusion method was adopted to produce thermoplastic starch(TPS)/polyvinyl alcohol(PVA)/montmorillonite(MMT) nanocomposites.The mechanical properties of TPS were improved effectively by adding certain amount of MMT and PVA.Under a relative humidity of 50%,the X-ray diffraction and transmission electron microscopy of the composites showed that MMT was exfoliated and well dispersed in TPS/PVA matrix.Mechanical property test showed that the mechanical property of the composites[w(MMT)=0% to 5%] was obvio...