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Article Dans Une Revue Polymer Année : 2016

Physical explanations about the improvement of PolyHydroxyButyrate ductility: Hidden effect of plasticizer on physical ageing

R. Crétois
  • Fonction : Auteur
J.-M. Chenal
A. Monnier
  • Fonction : Auteur
C. Martin
  • Fonction : Auteur
O. Astruz
  • Fonction : Auteur
R. Kurusu
  • Fonction : Auteur
N.R. Demarquette
  • Fonction : Auteur

Résumé

Firstly, specific aging and rejuvenating treatments are applied to PHB samples. This enables to clarify the roles of secondary crystallization and of physical ageing on PHB embrittlement over time. The reversibility of physical ageing and irreversibilty of secondary crystallization are demonstrated after annealing. Secondly, we focus on the effect of addition of plasticizer on the microstructure of PHB and its mechanical properties. The experimental results showed that the crystallinity of any plasticized sample is always higher than that of unplasticized, in spite of the greater ductility of the plasticized samples, indicating the importance of the amorphous phase on the mechanical properties of PHB. The experimental results demonstrate that a hidden major effect of plasticizer is in fact to prevent the physical ageing of the amorphous phase. © 2016 Elsevier Ltd
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Dates et versions

hal-01804507 , version 1 (31-05-2018)

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Citer

R. Crétois, J.-M. Chenal, Nida Sheibat-Othman, A. Monnier, C. Martin, et al.. Physical explanations about the improvement of PolyHydroxyButyrate ductility: Hidden effect of plasticizer on physical ageing. Polymer, 2016, 102, pp.176-182. ⟨10.1016/j.polymer.2016.09.017⟩. ⟨hal-01804507⟩
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