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<p>Over the last decades, biomass has been widely applied to secure the sustainable depletion in addition to the environmental conservation of fossil resources. The current research work explores the chemical, physical, mechanical and thermal features of luffa fibers after being treated by 1% NaOH (sodium hydroxide) during 90 min at 50°C. The elements composing luffa fiber and how the latter is influenced by alkali treatment a real so examined using Organic Elemental Analyze (THERMO FLASH 2000). In the performed experiments, the thermo gravietmeric analysis (TGA) was carried out to assess the thermal properties of both untreated and treated luffa fibers. In addition, X-ray diffraction (XRD) and FTIR analyses were conducted using EQUINOX 55 device to identify the crystallinity of luffa fibers. The treatment significantly promoted the fibers’ tensile strength by 159.58% (from 32.46 MPa to 84.26 MPa) and boosted their thermal stability by reducing mass loss upon thermal degradation from 68 to 62%. Crystallinity rose by about 43.7% after treatment, and moisture and water absorption rates decreased by 16.42% and 26.67%, respectively. The obtained findings suggest that luffa fibers treated with sodium hydroxide can be applied as a raw material to generate composite materials. The experimental outcomes can be regarded valuable only for industries searching for sustainable, but also eco-friendly substitutes to classic composites relying on synthetic fibers.</p>

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Enhancement of thermomechanical and structural properties of tunisian luffa fibers by alkaline treatment for eco-composite applications

  • 期刊论文

  • 发表日期：

    2025年12月16日

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  • Khaled Kharrati,
  • Marwa Jebli,
  • Ridha Abdeljabar,
  • Madiha Salhi

摘要

Over the last decades, biomass has been widely applied to secure the sustainable depletion in addition to the environmental conservation of fossil resources. The current research work explores the chemical, physical, mechanical and thermal features of luffa fibers after being treated by 1% NaOH (sodium hydroxide) during 90 min at 50°C. The elements composing luffa fiber and how the latter is influenced by alkali treatment a real so examined using Organic Elemental Analyze (THERMO FLASH 2000). In the performed experiments, the thermo gravietmeric analysis (TGA) was carried out to assess the thermal properties of both untreated and treated luffa fibers. In addition, X-ray diffraction (XRD) and FTIR analyses were conducted using EQUINOX 55 device to identify the crystallinity of luffa fibers. The treatment significantly promoted the fibers’ tensile strength by 159.58% (from 32.46 MPa to 84.26 MPa) and boosted their thermal stability by reducing mass loss upon thermal degradation from 68 to 62%. Crystallinity rose by about 43.7% after treatment, and moisture and water absorption rates decreased by 16.42% and 26.67%, respectively. The obtained findings suggest that luffa fibers treated with sodium hydroxide can be applied as a raw material to generate composite materials. The experimental outcomes can be regarded valuable only for industries searching for sustainable, but also eco-friendly substitutes to classic composites relying on synthetic fibers.