New polylactic acid composites reinforced with artichoke fibers

Luigi Botta, Vincenzo Fiore*, Tommaso Scalici, Antonino Valenza, Roberto Scaffaro

*Corresponding author for this work

Research output: Contribution to journalArticle

30 Citations (Scopus)
26 Downloads (Pure)

Abstract

In this work, artichoke fibers were used for the first time to prepare poly(lactic acid) (PLA)-based biocomposites. In particular, two PLA/artichoke composites with the same fiber loading (10% w/w) were prepared by the film-stacking method: the first one (UNID) reinforced with unidirectional long artichoke fibers, the second one (RANDOM) reinforced by randomly-oriented long artichoke fibers. Both composites were mechanically characterized in tensile mode by quasi-static and dynamic mechanical tests. The morphology of the fracture surfaces was analyzed through scanning electron microscopy (SEM). Moreover, a theoretical model, i.e., Hill's method, was used to fit the experimental Young's modulus of the biocomposites. The quasi-static tensile tests revealed that the modulus of UNID composites is significantly higher than that of the neat PLA (i.e., ~40%). Moreover, the tensile strength is slightly higher than that of the neat matrix. The other way around, the stiffness of RANDOM composites is not significantly improved, and the tensile strength decreases in comparison to the neat PLA.

Original languageEnglish
Pages (from-to)7770-7779
Number of pages10
JournalMaterials
Volume8
Issue number11
DOIs
Publication statusPublished - 16 Nov 2015

Keywords

  • Artichoke fiber
  • Biocomposites
  • Dynamic mechanical analysis (DMA)
  • Film stacking
  • PLA
  • Quasi-static tensile tests
  • Scanning electron microscopy (SEM)

ASJC Scopus subject areas

  • Materials Science(all)

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  • Cite this

    Botta, L., Fiore, V., Scalici, T., Valenza, A., & Scaffaro, R. (2015). New polylactic acid composites reinforced with artichoke fibers. Materials, 8(11), 7770-7779. https://doi.org/10.3390/ma8115422