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<p>The fields of polymer composites integrating new natural fibers, as well as the development of more sophisticated fiber treatment methods, are expected to promote the production of natural reinforcements with more desirable properties and broaden their application to new areas. The present work aims to investigate the chemical properties of two lignocellulosic fibers extracted from date palm trees using an environmentally friendly technique and to evaluate the thermal, rheological, mechanical, and long-term behavior of the resulting composites. The extraction technique utilizes an enzymatic cocktail containing xylanase and pectinase. The resulting composites exhibited good thermal stability and a much higher level of crystallinity than the virgin polymer, particularly with treated palm fibers. Tensile testing revealed that enzyme-treated fibers induced greater stiffness and strength in the elaborated composites compared to raw fibers. After aging, the treated palm fiber composites retained their mechanical strength and maintained better flexibility compared to composites with treated trunk fibers. This new class of treated fiber-based composite materials is characterized by enhanced long-term performance, their lightweight nature, and reduced environmental impact. As a result, they can be widely applied in various industries, contributing to their sustainable development.</p>

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Effect of enzyme treatment and UV aging on the mechanical and rheological properties of date palm fibers/PBS composites

  • 期刊论文

  • 发表日期：

    2025年8月29日

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  • Rania Chaari,
  • Mohamed Khlif,
  • Ali Gargouri,
  • Chedly Bradai,
  • Catherine Lacoste,
  • Philippe Dony

摘要

The fields of polymer composites integrating new natural fibers, as well as the development of more sophisticated fiber treatment methods, are expected to promote the production of natural reinforcements with more desirable properties and broaden their application to new areas. The present work aims to investigate the chemical properties of two lignocellulosic fibers extracted from date palm trees using an environmentally friendly technique and to evaluate the thermal, rheological, mechanical, and long-term behavior of the resulting composites. The extraction technique utilizes an enzymatic cocktail containing xylanase and pectinase. The resulting composites exhibited good thermal stability and a much higher level of crystallinity than the virgin polymer, particularly with treated palm fibers. Tensile testing revealed that enzyme-treated fibers induced greater stiffness and strength in the elaborated composites compared to raw fibers. After aging, the treated palm fiber composites retained their mechanical strength and maintained better flexibility compared to composites with treated trunk fibers. This new class of treated fiber-based composite materials is characterized by enhanced long-term performance, their lightweight nature, and reduced environmental impact. As a result, they can be widely applied in various industries, contributing to their sustainable development.