[article]
| Titre : |
Rheological behavior and modeling of thermal degradation of poly(E-caprolactone) and poly(L-Lactide) |
| Type de document : |
texte imprimé |
| Auteurs : |
A. Lopez Arraiza, Auteur ; J. R. Sarasua, Auteur ; Jacques Verdu, Auteur ; Xavier Colin, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 389-394 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Growing environmental concerns have led to the development of alternative biodegradable polymers with properties comparable to the conventional polyethylene, polypropylene or polyethylene terephthalate. In this paper the thermal degradation of poly(e-caprolactone) (PCL) and poly(L-lactide) (PLLA) melts was investigated by rheometry and thermogravimetry under different temperatures and inert atmosphere. The chain scission process was modeled to explain the phenomenon. The analysis suggests that PLLA is degraded by an unzipping depolymerization process from the hydroxyl end of the polymer chains. In contrast, the thermal degradation behavior of PCL was very complex because various reactions occurred concurrently : post-polymerization, loss of structural regularities and random chain scissions. |
| DOI : |
10.3139/217.2067 |
| En ligne : |
https://drive.google.com/file/d/1Yc9ANakev3JVwPxoxCmIijo-XgtCzSQ1/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2679 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXII, N° 5 (11/2007) . - p. 389-394
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