Foaming PLA with Thermoplastic Starch by Extrusion Assisted by Supercritical CO 2

Abstract : The manufacture of biopolymers foams with poly-lactic acid (PLA) and thermoplastic starch (TPS) using the green process of extrusion assisted by supercritical CO 2 is a promising way towards new applications. A parametric study evidenced that the porosity is strongly correlated with the die temperature, CO 2 content and TPS load. To get a high porosity, die temperature has to be diminished to block the gas escape from the extrudate sample. This reduction in temperature was only feasible when it was associated to an increase in CO 2 content to lower melt viscosity in the extruder. Higher TPS content led to foam samples with lower porosity, due to a weaker melt strength which in turn favoured the CO 2 escape instead of forming pores. Finally, for the 80 % PLA-20 % TPS blend, porosity as high as 96 % has been obtained.
Type de document :
Communication dans un congrès
International Society for the Advancement of Supercritical Fluids (ISASF). 16th European Meeting on Supercritical Fluids (EMSF 2017), Apr 2017, Lisbonne, Portugal. Proceedings of the 16th European Meeting on Supercritical Fluids EMSF 2017, 2017, 〈http://eventos.fct.unl.pt/emsf2017/home〉
Liste complète des métadonnées

Littérature citée [17 références]  Voir  Masquer  Télécharger

https://hal-mines-albi.archives-ouvertes.fr/hal-01574694
Contributeur : Jacques Fages <>
Soumis le : mercredi 16 août 2017 - 11:14:05
Dernière modification le : jeudi 18 janvier 2018 - 14:30:03

Fichier

Chauvet1-EMSF-Lisbon-2017.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01574694, version 1

Collections

Citation

Margot Chauvet, Martial Sauceau, Fabien Baillon, Jacques Fages. Foaming PLA with Thermoplastic Starch by Extrusion Assisted by Supercritical CO 2. International Society for the Advancement of Supercritical Fluids (ISASF). 16th European Meeting on Supercritical Fluids (EMSF 2017), Apr 2017, Lisbonne, Portugal. Proceedings of the 16th European Meeting on Supercritical Fluids EMSF 2017, 2017, 〈http://eventos.fct.unl.pt/emsf2017/home〉. 〈hal-01574694〉

Partager

Métriques

Consultations de la notice

87

Téléchargements de fichiers

56