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Effects of PLA-Type and Reinforcement Content on the Mechanical Behavior of Additively Manufactured Continuous Ramie Fiber-Filled Biocomposites

Author

Listed:
  • Kui Wang

    (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China)

  • Yanlu Chang

    (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China)

  • Ping Cheng

    (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China
    A ICUBE Laboratory—CNRS, University of Strasbourg, 67000 Strasbourg, France)

  • Wei Wen

    (School of Engineering, Lancaster University, Lancaster LA1 4YW, UK)

  • Yong Peng

    (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China)

  • Yanni Rao

    (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China)

  • Said Ahzi

    (A ICUBE Laboratory—CNRS, University of Strasbourg, 67000 Strasbourg, France)

Abstract

The present work aimed to examine the tensile and flexural behaviors of biocomposites reinforced with continuous plant fibers, utilizing a range of polylactic acid (PLA) matrix materials and varying fiber content. These biocomposites were fabricated using an in situ-impregnated fused filament fabrication (FFF) technique. The study incorporated three different PLA matrix materials, namely PLA, PLA-Matte (PLA-Ma), and PLA-ST, each with distinct mechanical properties. The effect of different linear densities of continuous ramie yarns on the biocomposites was also investigated. The results show that adding continuous ramie yarn significantly enhances both the tensile and flexural strengths, as well as the modulus, of the matrixes. Furthermore, there was a positive correlation between the content of ramie yarn and the increases in strength and modulus. Moreover, the introduction of ramie yarns altered the fracture behavior of the biocomposites, shifting towards brittle fracture. This change significantly impacted the fracture toughness of the matrixes and resulted in a convergence of elongation at the point of breakage.

Suggested Citation

  • Kui Wang & Yanlu Chang & Ping Cheng & Wei Wen & Yong Peng & Yanni Rao & Said Ahzi, 2024. "Effects of PLA-Type and Reinforcement Content on the Mechanical Behavior of Additively Manufactured Continuous Ramie Fiber-Filled Biocomposites," Sustainability, MDPI, vol. 16(7), pages 1-14, March.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:7:p:2635-:d:1362285
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