Investigation of lignocellulosic fibers in polymeric composites is important for development of green technologies, to reduce the weight and cost of materials and reduce pollutant emissions. In this work, the influence of piassava fiber length was evaluated to verify the mechanical response when incorporated in fiber-reinforced epoxy composites containing 20% piassava. Raw fibers were cut manually to lengths of 10, 20, and 30 mm. Tensile and flexural properties of the fiber-reinforced composites were compared. An increase in the fiber length was associated with higher tensile and flexural moduli and strength of piassava–epoxy composites, leading to stiffer and lesser ductile material.

中文翻译：

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纤维长度对piassava增强环氧树脂复合材料性能的影响

研究高分子复合材料中的木质纤维素纤维对于开发绿色技术、减轻材料的重量和成本以及减少污染物排放具有重要意义。在这项工作中，评估了木薯纤维长度的影响，以验证加入含有 20% 木薯的纤维增强环氧树脂复合材料时的机械响应。原纤维被手工切割成 10、20 和 30 毫米的长度。比较了纤维增强复合材料的拉伸和弯曲性能。纤维长度的增加与更高的拉伸和弯曲模量以及 piassava-epoxy 复合材料的强度有关，导致材料更硬，延展性更小。