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Polymeric compositesComposite reinforced by lignocellulosic fibersLignocellulosic fibers are an eco-friendly option for various applications that utilize the benefits of natural fibersNatural fibers and polymersPolymers to create materials with improved mechanical propertiesMechanical property and minimal environmental impactImpact. In this study, we acetylated unidirectional fibers from Luffa cylindrica and incorporated them into a polyester matrix. X-ray diffraction and Fourier-transform infrared spectroscopy analyses confirmed the success of the acetylation process, replacing hydroxyl groups with acetyl groups. Moreover, thermal analysis showed that the acetylated fibers had no mass loss up to 200 °C, indicating their hydrophobic nature. Scanning electron microscopy displayed an excellent interface between the acetylated fibers and the polymeric matrix. The Charpy impactImpact resistance for the acetylated fibers showed a remarkable 1865% increase compared to pure polyester. Additionally, the compositeComposite with acetylated fibers absorbed only 2.54% of water. These results demonstrate that lignocellulosic fibersLignocellulosic fibers’ in situ acetylation process offers a more sustainable alternative to synthetic fibers.

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Enhancing the Properties of Polyester Composites Using Unidirectional Acetylated Fibers from Luffa Cylindrica

  • 会议论文

  • 发表日期：

    2025年

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  • Eduarda C. R. de Melo,
  • Heliane R. Amaral,
  • Roseméri B. S. dos Silva,
  • Verônica S. Cândido,
  • Felipe P. D. Lopes,
  • Sergio N. Monteiro,
  • Michel P. Oliveira

摘要

Polymeric compositesComposite reinforced by lignocellulosic fibersLignocellulosic fibers are an eco-friendly option for various applications that utilize the benefits of natural fibersNatural fibers and polymersPolymers to create materials with improved mechanical propertiesMechanical property and minimal environmental impactImpact. In this study, we acetylated unidirectional fibers from Luffa cylindrica and incorporated them into a polyester matrix. X-ray diffraction and Fourier-transform infrared spectroscopy analyses confirmed the success of the acetylation process, replacing hydroxyl groups with acetyl groups. Moreover, thermal analysis showed that the acetylated fibers had no mass loss up to 200 °C, indicating their hydrophobic nature. Scanning electron microscopy displayed an excellent interface between the acetylated fibers and the polymeric matrix. The Charpy impactImpact resistance for the acetylated fibers showed a remarkable 1865% increase compared to pure polyester. Additionally, the compositeComposite with acetylated fibers absorbed only 2.54% of water. These results demonstrate that lignocellulosic fibersLignocellulosic fibers’ in situ acetylation process offers a more sustainable alternative to synthetic fibers.