This investigation focuses on studying the properties of treated and untreated Musa acuminate peduncle fiber (MAPF)-reinforced epoxy composites. The effect of fiber weight fraction and alkali treatment on the mechanical, thermal, and morphological characteristics of MAPF-reinforced epoxy composites was investigated for the first time. A considerable enhancement in the tensile, impact, and flexural characteristics was observed at 20 wt% fiber; beyond 20 wt%, the properties were found to decrease. The increase in cellulose (from 66.43 to 74.22 wt%) and decrease in lignin (from 16.85 to 7.91 wt%) and hemicellulose (from 13.72 to 8.58 wt%) in alkali-treated fiber resulted in a more crystalline structure. This led to improved tensile (tensile strength 53.61 MPa and tensile modulus 0.561 GPa), flexural (flexural strength 64.33 MPa and flexural modulus 5.43 GPa), and impact (90.33 J/m) composite properties compared to the untreated fiber composite. After tensile testing, the composite's fractured cross-sections were investigated using scanning electron microscopy, which revealed that the alkali-treated MAPF-reinforced composite had fewer voids and improved fiber bonding. Thermogravimetric analysis, Fourier transform infrared spectroscopy, and atomic force microscopy studies also revealed that alkali-treated MAPFs area promising reinforcement for the epoxy polymer matrix.

中文翻译：

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Musa acumate peduncle 纤维增强聚合物复合材料的机械、热学和表面形态学性能：碱化和纤维负载的影响

这项调查的重点是研究经过处理和未经处理的Musa acumate的特性花梗纤维（MAPF）增强环氧树脂复合材料。首次研究了纤维重量分数和碱处理对MAPF增强环氧复合材料力学、热学和形态学特性的影响。在 20 wt% 的纤维中观察到拉伸、冲击和弯曲特性的显着增强；超过 20 wt%，发现性能下降。碱处理纤维中纤维素的增加（从 66.43 到 74.22 wt%）和木质素的减少（从 16.85 到 7.91 wt%）和半纤维素（从 13.72 到 8.58 wt%）导致更多的结晶结构。这导致拉伸（拉伸强度 53.61 MPa 和拉伸模量 0.561 GPa）、弯曲（弯曲强度 64.33 MPa 和弯曲模量 5.43 GPa）和冲击（90. 33 J/m) 的复合材料性能与未处理的纤维复合材料相比。拉伸试验后，使用扫描电子显微镜对复合材料的断裂截面进行了研究，结果表明，碱处理的 MAPF 增强复合材料具有更少的空隙并改善了纤维粘合。热重分析、傅里叶变换红外光谱和原子力显微镜研究还表明，碱处理的 MAPF 区域有望增强环氧聚合物基体。