Polylactic acid (PLA) is derived from renewable sources and is among the most commercially available bioplastics. However, the application of PLA is limited due to its properties, such as poor thermal stability and ductility. The incorporation of woven polyester in the polymeric system has enhanced the properties of PLA. This research determines the mechanical, thermal, and morphological properties of woven polyester fiber-reinforced polylactic acid (PLA) composites. The composites were fabricated using a hot compression method with different fiber contents (%). The fiber contents used are 0 %, 20 %, 30 %, and 40 %. The WP40 composites yielded the highest tensile strength, tensile modulus, and elongation at break, which were recorded at 132.28 MPa, 976 MPa, and 17.86 MPa, respectively. The highest flexural strength for WP/PLA composites was recorded for the WP20 sample at 56 MPa. Moreover, the impact test revealed that WP30 displayed the highest strength at 61 kJ/m². The SEM micrograph showed good adhesion between the WP-PLA composites since there was less fiber pull-out. The addition of woven polyester has improved the thermal stability and degradation behavior of the composites. All results indicate that the composites have the potential to be used in the automotive component industry. Statistical analysis has been accomplished using one-way ANOVA, displaying significant differences between the results.

聚乳酸 (PLA) 来自可再生资源，是商业上最容易买到的生物塑料之一。然而，PLA由于其热稳定性和延展性差等特性限制了其应用。在聚合物体系中加入机织聚酯增强了 PLA 的性能。这项研究确定了编织聚酯纤维增强聚乳酸 (PLA) 复合材料的机械、热和形态特性。使用不同纤维含量（%）的热压缩方法制造复合材料。使用的纤维含量为 0%、20%、30% 和 40%。WP40 复合材料的拉伸强度、拉伸模量和断裂伸长率最高，分别为 132.28 MPa、976 MPa 和 17.86 MPa。WP20 样品在 56 MPa 时记录了 WP/PLA 复合材料的最高弯曲强度。此外，冲击试验表明 WP30 在 61 kJ/m 时表现出最高强度² . SEM 显微照片显示 WP-PLA 复合材料之间具有良好的粘附性，因为纤维拉出较少。添加机织聚酯改善了复合材料的热稳定性和降解行为。所有结果都表明该复合材料具有用于汽车零部件行业的潜力。使用单向方差分析完成了统计分析，显示了结果之间的显着差异。