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<p>This research investigates the mechanical, thermal and interfacial properties of natural fiber-reinforced polymer composites emphasizing the effects of alkali and silane fiber treatments. Untreated fiber composites (<i>F</i>, FL0 – FL2) exhibited enhanced mechanical properties with tensile strength increasing from 82.7&#xa0;MPa (<i>F</i>) to 137.7&#xa0;MPa (FL1) and flexural strength from 121.3 to 151.1&#xa0;MPa, although thermal stability slightly decreased due to the presence of thermally labile fiber constituents. Alkali–silane treated composites (FLT0 – FLT2) showed further improvement in mechanical performance, with tensile strength reaching 164.2&#xa0;MPa (FLT1), flexural strength of 176.3&#xa0;MPa and ILSS of 40.7&#xa0;MPa along with higher thermal conductivity and elevated decomposition temperatures. The combined alkali–silane treatment enhances fiber–matrix bonding, removes impurities and reduces hydrophilic surface groups resulting in improved load transfer and thermal resistance. These finding highlight the potential of treated natural fiber composites for structural, automotive and thermally demanding applications.</p>

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Influence of alkali–silane treatment on pistachio shell lignin and sunn hemp fiber-reinforced epoxy bio-composites: A characterization approach

  • 期刊论文

  • 发表日期：

    2025年11月18日

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  • R. Srinivasan,
  • Sakthi Prasad M,
  • Ramesh G,
  • M. Arul Murugan

摘要

This research investigates the mechanical, thermal and interfacial properties of natural fiber-reinforced polymer composites emphasizing the effects of alkali and silane fiber treatments. Untreated fiber composites (F, FL0 – FL2) exhibited enhanced mechanical properties with tensile strength increasing from 82.7 MPa (F) to 137.7 MPa (FL1) and flexural strength from 121.3 to 151.1 MPa, although thermal stability slightly decreased due to the presence of thermally labile fiber constituents. Alkali–silane treated composites (FLT0 – FLT2) showed further improvement in mechanical performance, with tensile strength reaching 164.2 MPa (FLT1), flexural strength of 176.3 MPa and ILSS of 40.7 MPa along with higher thermal conductivity and elevated decomposition temperatures. The combined alkali–silane treatment enhances fiber–matrix bonding, removes impurities and reduces hydrophilic surface groups resulting in improved load transfer and thermal resistance. These finding highlight the potential of treated natural fiber composites for structural, automotive and thermally demanding applications.