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<p>The significance of biomaterials in the context of green products is increasingly being recognized. This study provides an integrated analysis of lignocellulosic epoxy composites, focusing on different reinforcement condition parameters to promote sustainable materials for better bio-products. The investigations included thermal and topological analyses along with an assessment of mechanical performance. Thermogravimetric analysis (TGA) was conducted to assess the thermal stability of the fibers, and the effects of fiber loading and fiber size were investigated for the epoxy-based composites. The results revealed that the composite behavior was affected by several influential reinforcement parameters. An amount of 35 wt.% of a long olive fiber composite demonstrated the highest tensile strength with a value of 19.3 MPa, indicating an enhancement of 97% of the original epoxy matrix and the good adhesion between the olive fibers and the matrix, resulting in better stress transfer inside the composite. However, variations in the Young’s modulus between different composite types at identical loading rates were observed. Moreover, the composite with 35 wt.% long olive fillers displayed the lowest strain due to high adhesion with the matrix, which prevented the matrix from freely moving. The impact strengths of the long olive fiber/epoxy composites were 12.6 KJ/m<sup>2</sup>, 14.1 KJ/m<sup>2</sup>, and 14.9 KJ/m<sup>2</sup> for different fiber loadings. Morphological analysis was conducted using a scanning electron microscope (SEM) to reveal the microstructure of the composites, which confirmed that good adhesion between the olive fibers and the matrix occurred in the absence of voids and uniform fiber dispersion.</p>

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Thermo-Mechanical Characteristics, Performance, and Morphological Analysis of Sustainable Olive Fiber-Reinforced Epoxy Composites for Better Functional Bio-Products

  • 期刊论文

  • 发表日期：

    2026年7月27日

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  • Faris M. AL-Oqla,
  • Mohammed T. Hayajneh,
  • Fatma Zohra Benabid

摘要

The significance of biomaterials in the context of green products is increasingly being recognized. This study provides an integrated analysis of lignocellulosic epoxy composites, focusing on different reinforcement condition parameters to promote sustainable materials for better bio-products. The investigations included thermal and topological analyses along with an assessment of mechanical performance. Thermogravimetric analysis (TGA) was conducted to assess the thermal stability of the fibers, and the effects of fiber loading and fiber size were investigated for the epoxy-based composites. The results revealed that the composite behavior was affected by several influential reinforcement parameters. An amount of 35 wt.% of a long olive fiber composite demonstrated the highest tensile strength with a value of 19.3 MPa, indicating an enhancement of 97% of the original epoxy matrix and the good adhesion between the olive fibers and the matrix, resulting in better stress transfer inside the composite. However, variations in the Young’s modulus between different composite types at identical loading rates were observed. Moreover, the composite with 35 wt.% long olive fillers displayed the lowest strain due to high adhesion with the matrix, which prevented the matrix from freely moving. The impact strengths of the long olive fiber/epoxy composites were 12.6 KJ/m2, 14.1 KJ/m2, and 14.9 KJ/m2 for different fiber loadings. Morphological analysis was conducted using a scanning electron microscope (SEM) to reveal the microstructure of the composites, which confirmed that good adhesion between the olive fibers and the matrix occurred in the absence of voids and uniform fiber dispersion.