Influence of Fibre Loading on the Physico-Mechanical Properties of Water Hyacinth (Eichhornia crassipes) Fibre Reinforced Polyethylene Composites

Q4 Chemistry

Asian Journal of Chemistry Pub Date : 2024-07-25 DOI:10.14233/ajchem.2024.31699

N.A. Kaushi Aloka, R. Jayasinghe, G. Priyadarshana, A. Nilmini

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Abstract

Water hyacinth (Eichhornia crassipes), an invasive aquatic weed, threatens ecosystems by rapidly spreading across water surfaces. However, this study investigates its potential as a fibre source for various applications. Decorticated water hyacinth fibres were mixed into a polyethylene matrix at different weight ratios (0%, 5%, 7.5%, 10% and 12.5%). The resulting composites underwent thorough physico-mechanical characterization. Tensile strength showed a non-linear relationship with fibre content with the 5% fibre composite exhibiting the highest strength at 8.6 MPa. Fractographic analysis revealed the strength reduction was due to poor interfacial bonding. Flexural and impact strength increased with higher fibre content, peaking at 10.07 MPa and 26 J m-1, respectively, in the 12.5% fibre composite. Composite hardness rose from 43.9 to 45.5 Shore D with fibre inclusion, while density decreased. Moisture absorption and flammability increased with fibre content. This study highlights the potential of water hyacinth fibre reinforcement in polymer composites.

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纤维负载对布袋莲（Eichhornia crassipes）纤维增强聚乙烯复合材料物理机械特性的影响

布袋莲（Eichhornia crassipes）是一种入侵性水生杂草，通过在水面迅速蔓延威胁着生态系统。然而，本研究调查了其作为纤维源用于各种应用的潜力。将去皮的布袋莲纤维以不同的重量比（0%、5%、7.5%、10% 和 12.5%）混合到聚乙烯基体中。对所得复合材料进行了全面的物理机械性能分析。拉伸强度与纤维含量呈非线性关系，5% 纤维复合材料的拉伸强度最高，为 8.6 兆帕。断面分析表明，强度降低的原因是界面结合力差。挠曲强度和冲击强度随着纤维含量的增加而增加，12.5% 纤维复合材料的峰值分别为 10.07 MPa 和 26 J m-1。加入纤维后，复合材料的硬度从 43.9 Shore D 上升到 45.5 Shore D，而密度则有所下降。吸湿性和可燃性随着纤维含量的增加而增加。这项研究凸显了布袋莲纤维在聚合物复合材料中的增强潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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