Evaluation of high density polyethylene composite filled with bagasse after accelerated weathering followed by biodegradation

Darabi Peivand, Gril Joseph, Thévenon Marie-France, Karimi Ali N, Azadfalah M.. 2012. Evaluation of high density polyethylene composite filled with bagasse after accelerated weathering followed by biodegradation. BioResources, 7 (4) : pp. 5258-5267.

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Abstract : Wood-plastic composites (WPC) have many applications as structural and non-structural material. As their outdoor application becomes more widespread, their resistance against weathering, particularly ultraviolet light and biodegradation becomes of more concern. In the present study, natural fiber composites (NFPC) made of bagasse and high density polyethylene, with and without pigments, were prepared by extrusion and subjected to accelerated weathering for 1440 h; then weathered and un-weathered samples were exposed to fungal and termite resistance tests. The chemical and surface qualities of samples were studied by ATR-FTIR spectroscopy, colorimetry, contact angle, and roughness tests before and after weathering. Using bagasse as filler does reduce the discoloration of weathered samples. Adding pigments may reduce the effect of weathering on lignin degradation, although it favors polymer oxidation, but it increases the weight loss caused by fungi. Despite the high resistance of samples against biological attack, weathering triggers attack by termites and fungi on the surface and causes surface quality loss. (Résumé d'auteur)

Mots-clés Agrovoc : Bagasse, Saccharum officinarum, Film plastique, Composition chimique, Polyéthylène, Biodégradation, Photolyse, Pigment, Décoloration, Spectroscopie infrarouge, Coniophora puteana, Biodégradabilité, Résistance aux organismes nuisibles, Reticulitermes

Mots-clés géographiques Agrovoc : Iran République islamique

Mots-clés complémentaires : Reticulitermes santonensis

Classification Agris : Q60 - Processing of non-food or non-feed agricultural products
000 - Other themes

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

  • Darabi Peivand, CIRAD-PERSYST-UPR Bois tropicaux (FRA)
  • Gril Joseph, UM2 (FRA)
  • Thévenon Marie-France, CIRAD-PERSYST-UPR Bois tropicaux (FRA)
  • Karimi Ali N, Universiti Putra Malaysia (MYS)
  • Azadfalah M., University of tehran (IRN)

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