Renewable biocomposites of dimer fatty acid-based polyamides with cellulose fibres: Thermal, physical and mechanical properties

Elodie Hablot, Rodrigue Matadi, Said Ahzi, Luc Avérous

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Dimer fatty acid-based polyamides (DAPA) are reinforced with cellulose fibres (CF) from 5 to 20 wt.%. Thermal, morphological, dynamic mechanical and mechanical properties of the corresponding biocomposites (DAPAC) are investigated. They exhibit a high increase in glass transition temperature (Tg) and a decrease in the crystallisation temperature and crystallinity degree. This can be attributed to carbonyl (DAPA) and hydroxyl (CP) groups' interactions. These hydrogen bonds reduce the polymer mobility. For instance, the dynamic mechanical spectra of these biocomposites reveal an increase in the stiffness and higher thermal-mechanical stability. Morphological observations reveal a moderate interfacial adhesion between the fibres and the matrix. With the increase of the fibre content, tensile tests show a high increase in Young modulus and yield stress, and a decrease of elongation at break. Predicted modulus results based on micromechanical models, Voigt and Reuss bounds and Halpin-Tsai approaches, are compared with the experimental values. They show that the Halpin-Tsai model can be used to quantify the mechanical properties for DAPA/CF biocomposites.

Original languageEnglish
Pages (from-to)504-509
Number of pages6
JournalComposites Science and Technology
Volume70
Issue number3
DOIs
Publication statusPublished - Mar 2010
Externally publishedYes

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Keywords

  • A. Short-fibre composites
  • B. Modelling
  • B. Thermal properties
  • Bio-based polyamides
  • C. Elastic properties

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

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