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<p>The present research compares and investigates the untreated and treated lignin with sunn hemp fiber reinforced epoxy composites for automotive application purposes. According to the research, superior mechanical and shear properties, including 151.7&#xa0;MPa in tensile, 168&#xa0;MPa in flexural, 4.9&#xa0;J in impact, and 39.3&#xa0;MPa in interlinear shear strength (ILSS), are provided by the silane-treated lignin reinforced composite STL1 (2 vol%). The presence of silane-treated lignin, which binds the fiber-matrix effectively, and the filler’s uniform dispersion, which promotes strong interfacial adhesion and enhances the mechanical performance of the composites, are responsible for these exceptional qualities. Conversely, the composite STL2 containing 40 vol% sunn hemp fiber and 4 vol% silane-treated lignin exhibits exceptional hardness and heat conductivity behaviour. Because silane-treated lignin enhances load transmission and structural integrity, the STL2 has a shore-D hardness of 92 and a maximum thermal conductivity of 0.46. Additionally, by reducing interfacial thermal resistance, lignin’s aromatic structure and saline treatment improve thermal conductivity. Because of this, these composites have excellent capabilities and can be used in applications requiring strong mechanical and thermal conductivity. Moreover, the SEM analysis offers insights about the microstructures and morphology of the composites in which fracture toughness, micro-voids and dispersions of filler is identified for better investigation. These findings highlight the potential of silane-treated lignin/sunn hemp fiber reinforced epoxy composites as sustainable alternatives for automotive structural and thermal management applications.</p>

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Effect of silane treated pistachio shell lignin and sunn hemp fiber-reinforced epoxy Bio-composite: a characterization study

  • 期刊论文

  • 发表日期：

    2026年2月17日

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

摘要

The present research compares and investigates the untreated and treated lignin with sunn hemp fiber reinforced epoxy composites for automotive application purposes. According to the research, superior mechanical and shear properties, including 151.7 MPa in tensile, 168 MPa in flexural, 4.9 J in impact, and 39.3 MPa in interlinear shear strength (ILSS), are provided by the silane-treated lignin reinforced composite STL1 (2 vol%). The presence of silane-treated lignin, which binds the fiber-matrix effectively, and the filler’s uniform dispersion, which promotes strong interfacial adhesion and enhances the mechanical performance of the composites, are responsible for these exceptional qualities. Conversely, the composite STL2 containing 40 vol% sunn hemp fiber and 4 vol% silane-treated lignin exhibits exceptional hardness and heat conductivity behaviour. Because silane-treated lignin enhances load transmission and structural integrity, the STL2 has a shore-D hardness of 92 and a maximum thermal conductivity of 0.46. Additionally, by reducing interfacial thermal resistance, lignin’s aromatic structure and saline treatment improve thermal conductivity. Because of this, these composites have excellent capabilities and can be used in applications requiring strong mechanical and thermal conductivity. Moreover, the SEM analysis offers insights about the microstructures and morphology of the composites in which fracture toughness, micro-voids and dispersions of filler is identified for better investigation. These findings highlight the potential of silane-treated lignin/sunn hemp fiber reinforced epoxy composites as sustainable alternatives for automotive structural and thermal management applications.