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Abstract <p>As an innovative waste management strategy, this study aimed to upcycle mango seed coat waste-derived fibers in bio-composite 3D-printing material. The fibers were extracted through mechanical grinding, treated with alkali, and characterized for their composition, water absorption, and surface morphology. Composite filaments were fabricated via melt extrusion and evaluated for tensile strength compared to pure polylactic acid (PLA) filaments. Results show that incorporating 7.5 wt% mango seed coat fibers enhance the tensile properties to 55.53 ± 2.78&#xa0;MPa compared to the pure PLA filament, whose tensile strength is 51.23 ± 2.56&#xa0;MPa with a water absorption value under 5%. These findings demonstrate the potential of upcycled agricultural waste in the development of bio-based filaments for 3D-printing and medium load-bearing structural applications, offering a renewable alternative to conventional synthetic materials while promoting waste valorization in polymer composites.</p> Graphical abstract <p></p>

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Upcycling of mango seed coat waste fibers into biodegradable composite filaments for structural and substructural applications

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • Nelson O. Mandela,
  • Thomas O. Mbuya,
  • James M. Mutua,
  • Joshua K. Ngoret

摘要

Abstract

As an innovative waste management strategy, this study aimed to upcycle mango seed coat waste-derived fibers in bio-composite 3D-printing material. The fibers were extracted through mechanical grinding, treated with alkali, and characterized for their composition, water absorption, and surface morphology. Composite filaments were fabricated via melt extrusion and evaluated for tensile strength compared to pure polylactic acid (PLA) filaments. Results show that incorporating 7.5 wt% mango seed coat fibers enhance the tensile properties to 55.53 ± 2.78 MPa compared to the pure PLA filament, whose tensile strength is 51.23 ± 2.56 MPa with a water absorption value under 5%. These findings demonstrate the potential of upcycled agricultural waste in the development of bio-based filaments for 3D-printing and medium load-bearing structural applications, offering a renewable alternative to conventional synthetic materials while promoting waste valorization in polymer composites.

Graphical abstract