Evolution of bamboo derivative fiber-mollusk shell based calcite particulate hybrid reinforced epoxy bio-composites for sustainable applications

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Composite Materials Pub Date : 2024-08-08 DOI:10.1177/00219983241270966

Oluwole I Oladele, A. Akinwekomi, J. G. Akinseye, Samuel O Falana, Samuel R Oke

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引用次数: 0

Abstract

This study focused on the development of environmentally friendly epoxy-based biocomposites by incorporating bamboo fiber (BF) and calcite particles (CP) as reinforcements. A total of 125 specimens were fabricated with different weight percentages of BF and CP ranging from 0% to 15% to the epoxy. The biobased reinforcements were processed before incorporation, and the hand layup technique was used to fabricate the composites, which were then cured at ambient temperature. Evaluations of selected properties were carried out to ascertain the most probable areas of application, while the fracture surfaces were examined using SEM. The results indicated that the inclusion of these hybrid bio-reinforcements significantly enhanced the properties of the biocomposites compared to unreinforced samples. The optimal composition was identified as 12 wt% BF/CP, which demonstrated the highest ultimate tensile strength (32.84 MPa) and tensile modulus (1.9 GPa), attributed to the strong interfacial bonding between the epoxy matrix and the BF/CP reinforcements. Additionally, the flexural strength (55.38 MPa) and modulus (2.72 GPa) were improved due to the effective load transfer and stiffening effect of the calcite particles. The hardness (67 HS) and wear index (0.015 mg) were enhanced by the toughening mechanism provided by the bamboo fibers, while the density (1.195 g/cm³) remained within a desirable range for lightweight applications. Composites with 9 wt% BF/CP exhibited the highest impact strength (22.66 J/m2), likely due to the optimal balance of fiber-matrix interaction and energy absorption capacity. These findings indicate that the developed hybrid-reinforced biocomposite compositions hold great promise with the improved physical and mechanical properties as seen and can be utilized for various applications, including automotive, aerospace, and other engineering applications.

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基于方解石微粒的竹衍生纤维-软体贝壳混合增强环氧生物复合材料在可持续应用中的演化

本研究的重点是通过加入竹纤维（BF）和方解石颗粒（CP）作为增强材料，开发环境友好型环氧基生物复合材料。共制作了 125 个试样，环氧树脂中竹纤维和方解石颗粒的重量百分比从 0% 到 15% 不等。在加入生物基增强材料之前对其进行了处理，并采用手糊技术制作复合材料，然后在环境温度下固化。对选定的性能进行了评估，以确定最可能的应用领域，同时使用扫描电镜对断裂表面进行了检查。结果表明，与未增强的样品相比，加入这些混合生物增强剂可显著提高生物复合材料的性能。最佳成分为 12 wt% 的 BF/CP，其极限拉伸强度（32.84 MPa）和拉伸模量（1.9 GPa）最高，这归功于环氧基体与 BF/CP 增强材料之间的强界面粘合。此外，由于方解石颗粒的有效载荷传递和加硬效应，抗弯强度（55.38 兆帕）和模量（2.72 千兆帕）也得到了提高。竹纤维提供的增韧机制提高了硬度（67 HS）和磨损指数（0.015 mg），而密度（1.195 g/cm³）则保持在轻质应用的理想范围内。含有 9 wt% BF/CP 的复合材料显示出最高的冲击强度（22.66 J/m2），这可能是由于纤维与基体的相互作用和能量吸收能力达到了最佳平衡。这些研究结果表明，所开发的混合增强生物复合材料组合物的物理和机械性能得到了改善，具有广阔的应用前景，可用于汽车、航空航天和其他工程应用领域。

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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来源期刊

Journal of Composite Materials 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.90%

发文量

274

审稿时长

6.8 months

期刊介绍： Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).