Biodegradable jute cloth reinforced thermoplastic copolyester composites: Fracture and failure behaviour

B. A. Acha, N. E. Marcovich, J. Karger-Kocsis

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Jute cloth reinforced, fully biodegradable thermoplastic composites were produced by the film stacking technique, with a semicrystalline copolyester (Ecoflex) as the matrix material. The jute cloth content varied between 0, 20 and 40 wt-% in the sheets produced by hot pressing. Specimens cut from the sheets were subjected to in plane static and out of plane dynamic loading, and the related fracture and failure behaviours were studied. The jute cloth proved to be a useful reinforcement to enhance in plane mechanical properties. The J integral concept (J-R curve) was adopted to assess the fracture behaviour of the composites. Crack propagation in single edge notched tensile (SEN-T) loaded specimens was detected using position resolved acoustic emission (AE). Acoustic emission was also used to characterise the failure. Surprisingly, no beneficial effect of the jute cloth was observed in the out of plane, namely instrumented falling weight impact (IFWI) test. This could be explained by the characteristics of the jute cloth used (the large mesh size increases the tendency to disintegrate when stretched at high strain rates) and by its moderate adhesion toward the matrix.

Original languageEnglish
Pages (from-to)73-82
Number of pages10
JournalPlastics, Rubber and Composites
Volume35
Issue number2
DOIs
Publication statusPublished - Jun 29 2006

Keywords

  • Acoustic emission
  • Biocomposite
  • Ecoflex
  • Failure
  • Film stacking
  • Fracture
  • J integral
  • Jute
  • Perforation impact

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

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