以钠基蒙脱土为填充物制备Na-GMMT/TPS粒料（简称TPS），将TPS按不同比例与PBAT共混，通过双螺杆挤出机制备TPS-PBAT复合材料。通过万能材料试验机、X射线衍射系统（XRD）、热重分析仪（TG）和扫描电子显微镜（SEM），对TPS-PBAT复合材料的结构和性能进行表征。结果表明：以TPS为基体时，复合材料可以在保持良好断裂伸长率的前提下，大幅提升拉伸强度。TPS-PBAT-4复合材料的断裂伸长率为233.3%，拉伸强度为18.9 MPa。随着TPS含量的提升，复合材料的衍射峰逐渐平缓，说明TPS的添加降低了复合材料的结晶度。TPS的加入，提升了玉米淀粉和PBAT的热稳定性。以PBAT为基体时，TPS与PBAT的相容性较差。以TPS为基体时，TPS与PBAT之间没有明显的界限，表现出较好的相容性。

Na-GMMT/TPS pellets (TPS for short) were prepared with sodium montmorillonite as filler. TPS was blended with PBAT in different proportions, and TPS-PBAT composites were prepared by twin-screw extruder. The structure and properties of TPS-PBAT composites were characterized by universal material testing machine, X-ray diffraction (XRD), thermogravimetric analyzer (TG) and scanning electron microscope (SEM). The results show that when TPS is used as matrix, the tensile strength of the composites can be greatly improved while maintaining good elongation at break. The elongation at break of TPS-PBAT-4 composites is 233.3% and the tensile strength is 18.9 MPa. With the increase of TPS content, the diffraction peaks of the composites gradually flatten, indicating that the addition of TPS reduces the crystallinity of the composites. The addition of TPS improves the thermal stability of corn starch and PBAT. When PBAT is used as matrix, the compatibility between TPS and PBAT is poor. When TPS is used as matrix, there is no obvious boundary between TPS and PBAT, and it shows better compatibility.