Effect of ageing and annealing on the mechanical behaviour and biodegradability of a poly(3-hydroxybutyrate) and poly(ethylene-co-methyl-acrylate-co-glycidyl-methacrylate)blend - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Polymer international Année : 2014

Effect of ageing and annealing on the mechanical behaviour and biodegradability of a poly(3-hydroxybutyrate) and poly(ethylene-co-methyl-acrylate-co-glycidyl-methacrylate)blend

R.S. Kurusu
  • Fonction : Auteur
N.R. Demarquette
  • Fonction : Auteur
C. Gauthier
  • Fonction : Auteur
J.-M. Chenal

Résumé

Poly(3-hydroxybutyrate) (PHB) undergoes an ageing process that contributes to its remarkable fragility. Blending it with an elastomer is a possibility to increase toughness. In this work, the mechanical properties of a 70/30wt% blend of PHB and poly(ethylene-co-methyl-acrylate-co-glycidyl-methacrylate) were studied over time. The phenomenon of ageing affected the blend, which lost its ductility and became fragile days after its processing. Differential scanning calorimetry and small angle X-ray scattering analyses showed that this drop in mechanical properties was due to changes in the crystalline structure of the matrix. Annealing reduced fragility, increased toughness and prevented a re-ageing of the blend. Biodegradation in soil was also more intense for annealed samples. © 2013 Society of Chemical Industry.

Dates et versions

hal-01808023 , version 1 (05-06-2018)

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Citer

R.S. Kurusu, N.R. Demarquette, C. Gauthier, J.-M. Chenal. Effect of ageing and annealing on the mechanical behaviour and biodegradability of a poly(3-hydroxybutyrate) and poly(ethylene-co-methyl-acrylate-co-glycidyl-methacrylate)blend. Polymer international, 2014, 63 (6), pp.1085-1093. ⟨10.1002/pi.4616⟩. ⟨hal-01808023⟩
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