Synthetic materials reinforced with natural fibers are attracting great attention of scientists and researchers. Sustainability and eco-friendly nature along with easy availability and low cost are the key reasons. In this work, a natural fiber such as a banana fiber was investigated to create bioavailable materials while enhancing mechanical properties. The banana fiber was extracted from banana sheath by the mechanical method combined with chemical treatment with NaOH 1, 2, 3, 4, and 5%. Treatment of the banana fiber with NaOH effectively removes other impurities from the fiber surface and the fiber surface becomes rough, increasing the compatibility and bonding between banana fiber and PLA. The reported optimum NaOH concentration was 5% banana fiber used for the material polylactic acid (PLA) composite/banana fiber. The composites (BF) were prepared by the hot melt mixing method. The results showed that 20% by weight of banana fiber gave good results and the mechanical strength values kept at the specified level (tensile strength: 52.57 MPa, flexural strength: 70.35 MPa, impact strength: 155.45 J/m and hardness: 23.8 Hv). SEM observations showed visual evidence that surface impurities were removed from the fiber by NaOH treatment.

中文翻译：

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香蕉纤维增强材料聚乳酸复合材料力学性能研究

用天然纤维增强的合成材料引起了科学家和研究人员的极大关注。可持续性和环保性质以及易于获得和低成本是关键原因。在这项工作中，研究了一种天然纤维，如香蕉纤维，以创造生物可利用的材料，同时提高机械性能。采用机械法结合NaOH 1、2、3、4、5%化学处理从香蕉皮中提取香蕉纤维。用NaOH对香蕉纤维进行处理，有效去除了纤维表面的其他杂质，纤维表面变得粗糙，增加了香蕉纤维与PLA之间的相容性和结合力。报道的最佳 NaOH 浓度为 5% 的香蕉纤维，用于材料聚乳酸 (PLA) 复合材料/香蕉纤维。通过热熔混合法制备复合材料（BF）。结果表明，20%重量的香蕉纤维效果良好，机械强度值保持在规定水平（拉伸强度：52.57 MPa，弯曲强度：70.35 MPa，冲击强度：155.45 J/m，硬度：23.8 Hv） . SEM 观察显示通过 NaOH 处理从纤维中去除了表面杂质的视觉证据。