Wheat straw pre-treatments using eco-friendly strategies for enhancing the tensile properties of bio-based polylactic acid composites

Mehdi Chougan, Seyed Hamidreza Ghaffar*, Mazen J. Al-Kheetan, Mantas Gecevicius

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Individual and hybrid pre-treatments, including hot water, steam and microwave were used on wheat straw to mitigate the surface quality deficiencies for an intimate interfacial bond between substrate and Polylactic Acid matrix. Microstructural analysis showed the expansion of cells due to the pre-treatments which in turn promotes mechanical entanglement between wheat straw and PLA, thus, improving the tensile properties of bio-based composites. The tensile strength, elongation at break, elastic modulus, and toughness increased by 166 %, 18 %, 68 %, and 285 %, respectively, for hot water followed by steam pre-treated wheat straw bio-based composites compared to untreated.

Original languageEnglish
Article number112836
JournalIndustrial Crops and Products
Volume155
DOIs
Publication statusPublished - 1 Nov 2020

Bibliographical note

Funding Information:
This work was funded as part of the HPCSB project, which has received funding from the Engineering and Physical Sciences Research Council with the following reference: EP/S026487/1.

Publisher Copyright:
© 2020

Keywords

  • Bio-based composites
  • Polylactic acid
  • Pre-treatment
  • Tensile performance
  • Wheat straw

ASJC Scopus subject areas

  • Agronomy and Crop Science

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