Modelling Nucleation and Cell Size During the Continuous Process of Extrusion Assisted by Supercritical CO 2

Abstract : Polymer foaming with the process of extrusion assisted by supercritical CO 2 is based on the injection of a supercritical fluid, in our case carbon dioxide, in a polymer, which has been previously melted in the barrel of an extruder. Upon depressurisation that happens in the die, nucleated bubbles will appear and grow. Modelling the nucleation and growth is important to better understand and master the process. A suitable and specific mathematical formulation has been implemented to calculate the number and the size of the pores. A methodology consisting in discretizing the space, to bring back to a succession of batch models was the chosen approach and a functional algorithm has been developed. The model will be applied in the foaming process of poly-lactic acid PLA and will be compared to experimental results.
Type de document :
Communication dans un congrès
ISASF, International Society for the Advancement of Supercritical Fluids. 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 [2 références]  Voir  Masquer  Télécharger

https://hal-mines-albi.archives-ouvertes.fr/hal-01574696
Contributeur : Jacques Fages <>
Soumis le : mercredi 16 août 2017 - 11:20:50
Dernière modification le : jeudi 18 janvier 2018 - 14:30:03

Fichier

Chauvet2-EMSF-Lisbon-2017.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01574696, version 1

Collections

Citation

Margot Chauvet, Fabien Baillon, Martial Sauceau, Jacques Fages. Modelling Nucleation and Cell Size During the Continuous Process of Extrusion Assisted by Supercritical CO 2. ISASF, International Society for the Advancement of Supercritical Fluids. 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-01574696〉

Partager

Métriques

Consultations de la notice

107

Téléchargements de fichiers

31