Following the contemporary research trend of exploring the potential of eco-friendly natural fibres, this work studies the effects of alkali and silane treatments, with varying concentrations, on the mechanical characterization of composites reinforced with kenaf and pineapple leaf fibre (PALF). Kenaf- and PALF-based composites were fabricated through the heat compression method. Their mechanical characterization was then performed to evaluate the tensile, flexural and impact properties. The findings concluded that chemical treatments indeed enhanced the mechanical properties of composite materials. 5% NaOH and 3% silane treatments can respectively provide the optimum mechanical properties to the kenaf fibre and PALF reinforced composites. Chemical treatment results evidenced that silane-treated composites exhibit higher mechanical properties compared to the NaOH-treated composites. When comparing the mechanical properties of kenaf- and PALF-reinforced polypropylene composites, the overall results show that composites based on PALF have superior mechanical properties.

中文翻译：

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碱和硅烷处理对红麻和菠萝叶纤维增强复合材料的典型力学性能的影响

遵循当代探索生态友好型天然纤维潜力的研究趋势，这项工作研究了不同浓度的碱和硅烷处理对洋麻和菠萝叶纤维（PALF）增强的复合材料的机械性能的影响。通过热压缩方法制备了基于Kenaf和PALF的复合材料。然后对其进行机械表征，以评估其拉伸，弯曲和冲击性能。研究结果得出结论，化学处理确实增强了复合材料的机械性能。5％NaOH和3％硅烷处理可以分别为洋麻纤维和PALF增强复合材料提供最佳的机械性能。化学处理结果表明，与NaOH处理的复合材料相比，硅烷处理的复合材料具有更高的机械性能。当比较洋麻和PALF增强聚丙烯复合材料的机械性能时，总体结果表明，基于PALF的复合材料具有优异的机械性能。