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<p>This study explores the mechanical, fatigue, creep, and water absorption properties of silane-treated epoxy composites reinforced with natural pineapple fiber and collagen powder derived from tuna fish skin. The use of these renewable materials promotes sustainability while enhancing performance without compromising strength, making the composites suitable for marine, automotive, aerospace, packaging, biomedical, and infrastructure applications. Surface treatment with 3-Aminopropyltrimethoxysilane (3-APTMS) significantly improves fiber-matrix bonding, resulting in stronger interfacial adhesion and more efficient load transfer. Specimen D (40% fiber, 3% collagen) showed the best mechanical and fatigue performance, with a tensile strength of 147&#xa0;MPa and fatigue life of 24,179 cycles at 25% ultimate tensile strength (UTS), due to the balanced fiber and filler content that enhances load transfer and crack resistance. In contrast, Specimen E (40% fiber, 5% collagen) exhibited superior creep resistance (0.0062 strain at 5000&#xa0;s) and the highest water absorption (0.043%), attributed to the hydrophilic nature of the higher collagen content. Scanning electron microscope (SEM) analysis confirmed improved fiber-matrix adhesion in treated specimens, with evidence of fiber breakage supporting efficient load transfer. However, higher filler content occasionally led to agglomeration, affecting mechanical properties. Overall, the study presents a promising approach to creating sustainable, high-performance composites using natural reinforcements.</p>

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Mechanical, fatigue, creep and water absorption behaviour of silane surface treated pineapple fibre and tuna skin collagen powder epoxy composite

  • 期刊论文

  • 发表日期：

    2025年12月20日

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  • Seeniappan Kaliappan,
  • L. Natrayan,
  • M. Ramya,
  • Vinayagam Mohanavel,
  • Manzoore Elahi M. Soudagar,
  • S. Vijayan,
  • Arthanarieswaran V. P,
  • Beporam Iftekhar Hussain

摘要

This study explores the mechanical, fatigue, creep, and water absorption properties of silane-treated epoxy composites reinforced with natural pineapple fiber and collagen powder derived from tuna fish skin. The use of these renewable materials promotes sustainability while enhancing performance without compromising strength, making the composites suitable for marine, automotive, aerospace, packaging, biomedical, and infrastructure applications. Surface treatment with 3-Aminopropyltrimethoxysilane (3-APTMS) significantly improves fiber-matrix bonding, resulting in stronger interfacial adhesion and more efficient load transfer. Specimen D (40% fiber, 3% collagen) showed the best mechanical and fatigue performance, with a tensile strength of 147 MPa and fatigue life of 24,179 cycles at 25% ultimate tensile strength (UTS), due to the balanced fiber and filler content that enhances load transfer and crack resistance. In contrast, Specimen E (40% fiber, 5% collagen) exhibited superior creep resistance (0.0062 strain at 5000 s) and the highest water absorption (0.043%), attributed to the hydrophilic nature of the higher collagen content. Scanning electron microscope (SEM) analysis confirmed improved fiber-matrix adhesion in treated specimens, with evidence of fiber breakage supporting efficient load transfer. However, higher filler content occasionally led to agglomeration, affecting mechanical properties. Overall, the study presents a promising approach to creating sustainable, high-performance composites using natural reinforcements.