The present study deals with the effects of alkaline and benzoyl chloride treatments of sugar palm fibers (SPFs) on the mechanical and morphological properties of SPF-reinforced poly(lactic acid) (PLA) composites. Seven different parameters of SPFs were compared, which were untreated, three alkaline solution concentrations of 4%, 5%, and 6% for alkaline treatment, and 50 ml benzoyl chloride-treated SPFs at three different soaking durations of 10, 15, and 20 min. Composites of 30 wt.% SPF–reinforced 70 wt.% PLA were prepared by using a Brabender plastograph mixer and a hot press. The tensile, flexural, and impact properties of the SPF/PLA composites were improved after alkaline and benzoyl chloride treatments on the SPFs. However, the best tensile, flexural, and impact properties of the composites were observed at 6% alkaline treatment of SPF; the morphological analysis also supported this. The 6% alkaline treatment of the SPF/PLA composite demonstrated the highest tensile, flexural, and impact strength values of 17.08 MPa, 32.34 MPa, and 4.39 kJ/m², respectively. These treated SPF/PLA composites could be appropriate for automobile component applications.

本研究涉及糖棕榈纤维 (SPF) 的碱性和苯甲酰氯处理对 SPF 增强的聚乳酸 (PLA) 复合材料的机械和形态特性的影响。比较了 SPF 的 7 个不同参数，分别是未处理的、4%、5% 和 6% 的三种碱性溶液浓度进行碱处理，以及 50 ml 苯甲酰氯处理的 SPF 在 10、15 和 20 三种不同的浸泡时间分钟 30 wt.% SPF 增强的 70 wt.% PLA 复合材料是通过使用 Brabender 塑性计混合器和热压机制备的。SPF/PLA 复合材料的拉伸、弯曲和冲击性能在碱性和苯甲酰氯处理后得到改善。然而，复合材料的最佳拉伸、弯曲和冲击性能在 6% 的 SPF 碱处理下观察到；形态分析也支持这一点。SPF/PLA 复合材料的 6% 碱处理表现出最高的拉伸、弯曲和冲击强度值，分别为 17.08 MPa、32.34 MPa 和 4.39 kJ/m²、分别。这些经过处理的 SPF/PLA 复合材料可能适用于汽车部件应用。