Rheological and molecular investigations of polyethylene degradation in a batch mixer / E. Twite-Kabamba in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 4 (09/2010)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXV, N° 4 (09/2010) . - p. 297-303 Titre : Rheological and molecular investigations of polyethylene degradation in a batch mixer Type de document : texte imprimé Auteurs : E. Twite-Kabamba, Auteur ; D. Rodrigue, Auteur Année de publication : 2010 Article en page(s) : p. 297-303 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Ecoulement élongationnel Malaxeurs et mélangeurs Matériaux -- Fatigue Polyéthylène Polyéthylène basse densité Polymères -- Détérioration Rhéologie Index. décimale : 668.9 Polymères Résumé : In this study, polyethylene degradation is related to its thermo-mechanical history from processing in a batch mixer. A focus is made on the rheological and molecular properties of the polyethylene subjected to different processing conditions by changing the temperature, the rotor speed and the time of process. The results indicate that while shear rheological properties changed slightly, the elongational properties were substantially modified, especially the maximum stress and the elongation at break. Due to the formation of macroradicals while processing, macromolecular changes were characterized in terms of molecular weight distribution and the results represent a balance between rates of chain scission and chain branching. It was found that the main parameter to characterize the degradation behaviour was the input power. DOI : 10.3139/217.2365 En ligne : https://drive.google.com/file/d/1aiT5bd8vlg2BA_q2lUoV2Iqkb51UYHcD/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9826 [article]

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