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This study investigates the enhancement of mechanical propertiesMechanical properties in eco-friendly and biodegradableBiodegradable jute fibreJute fibre-reinforced epoxy compositesEpoxy composites through alkali surface modification. Jute fibers (Corchorus capsularis) were used as reinforcement and epoxy L-12 as the matrix. To improve interfacial bonding and structural performance, the raw jute fibresJute fibre underwent dewaxing followed by alkaline treatment using potassium hydroxide (KOHPotassium hydroxide (KOH)) at varying concentrations (2, 4, 6, and 8 wt%). CompositesComposites were fabricated via the hand lay-up method with an optimal fiber loading of 15 wt%. The effects of chemical treatments were analysed through X-ray diffraction (XRDX-ray Diffraction (XRD)), Fourier-transform infrared spectroscopy (FTIRFourier-Transform Infrared Spectroscopy (FTIR)), and mechanical testsMechanical test, including tensile, flexural, and impact testing. Results revealed that crystallinity index and crystalline size increased up to 6 wt% KOHPotassium hydroxide (KOH) treatment, attributed to the removal of surface impurities and partial elimination of hemicellulose and lignin, as confirmed by FTIRFourier-Transform Infrared Spectroscopy (FTIR) analysis. Correspondingly, mechanical strength improved up to 6 wt%, beyond which degradation occurred, likely due to polymerPolymer chain damage. Overall, compositesComposites reinforced with 6 wt% KOHPotassium hydroxide (KOH)-treated jute fibresJute fibre exhibited the best mechanical performance, demonstrating the effectiveness of controlled alkali treatment for high-performance biocompositeBiocomposites development.

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Alkali-Treated Jute Fibre Biocomposites for Lightweight and Eco-Friendly Engineering Applications

  • 会议论文

  • 发表日期：

    2026年

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  • Dhaneshwar Prasad Sahu,
  • Ramyaranjan Das,
  • Jagesh Kumar Prusty,
  • Sukesh Chandra Mohanty

摘要

This study investigates the enhancement of mechanical propertiesMechanical properties in eco-friendly and biodegradableBiodegradable jute fibreJute fibre-reinforced epoxy compositesEpoxy composites through alkali surface modification. Jute fibers (Corchorus capsularis) were used as reinforcement and epoxy L-12 as the matrix. To improve interfacial bonding and structural performance, the raw jute fibresJute fibre underwent dewaxing followed by alkaline treatment using potassium hydroxide (KOHPotassium hydroxide (KOH)) at varying concentrations (2, 4, 6, and 8 wt%). CompositesComposites were fabricated via the hand lay-up method with an optimal fiber loading of 15 wt%. The effects of chemical treatments were analysed through X-ray diffraction (XRDX-ray Diffraction (XRD)), Fourier-transform infrared spectroscopy (FTIRFourier-Transform Infrared Spectroscopy (FTIR)), and mechanical testsMechanical test, including tensile, flexural, and impact testing. Results revealed that crystallinity index and crystalline size increased up to 6 wt% KOHPotassium hydroxide (KOH) treatment, attributed to the removal of surface impurities and partial elimination of hemicellulose and lignin, as confirmed by FTIRFourier-Transform Infrared Spectroscopy (FTIR) analysis. Correspondingly, mechanical strength improved up to 6 wt%, beyond which degradation occurred, likely due to polymerPolymer chain damage. Overall, compositesComposites reinforced with 6 wt% KOHPotassium hydroxide (KOH)-treated jute fibresJute fibre exhibited the best mechanical performance, demonstrating the effectiveness of controlled alkali treatment for high-performance biocompositeBiocomposites development.