| Téléchargement | - Voir le manuscrit accepté : Extrusion foaming of poly(lactic acid) blown with CO₂ : Toward 100% green material (PDF, 1.9 Mio)
|
|---|
| Auteur | Rechercher : Reignier, Joël1; Rechercher : Gendron, Richard1; Rechercher : Champagne, Michel F.1 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Institut des matériaux industriels du CNRC
|
|---|
| Format | Texte, Article |
|---|
| Sujet | Biodegradable polymers; poly(lactic acid); foam extrusion; open-cell; plasticization |
|---|
| Résumé | This paper presents a thorough investigation of the continuous extrusion foaming of amorphous poly(lactic acid) (PLA) using carbon dioxide (CO₂) as the blowing agent. Detailed results describing the plasticization induced by CO₂ dissolution as measured from two different methods, on-line rheometry and in-line ultrasonic technique, are given. Characteristics of the foams obtained from extrusion performed under various processing conditinos are also reported. Extrusion of PLA foams in the 20-25 kg/m³ density range was achieved. However, the associated processing window was very narrow: CO₂ content lower than ca. 7 wt% did not lead to significant foam expansion while foams blown at CO₂ contents larger than 8.3 wt% showed severe shrinkage upon ageing. |
|---|
| Date de publication | 2007-01-01 |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro du CNRC | NRCC 48933 |
|---|
| Numéro NPARC | 15769644 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | f3b6575d-a09e-46c1-8d2c-720b67224eed |
|---|
| Enregistrement créé | 2010-07-06 |
|---|
| Enregistrement modifié | 2020-05-10 |
|---|
