Free volume from pressure and temperature dependent viscosity and from PVT measurements for homo- and copolymers / L. Halàsz in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 4 (09/2011)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXVI, N° 4 (09/2011) . - p. 403-415 Titre : Free volume from pressure and temperature dependent viscosity and from PVT measurements for homo- and copolymers Type de document : texte imprimé Auteurs : L. Halàsz, Auteur ; A. Huszàr, Auteur Année de publication : 2011 Article en page(s) : p. 403-415 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Compressibilité Copolymères Ecoulement cisaillé Ecoulement élongationnel Homopolymères Mesure de pression-volume-température Index. décimale : 668.9 Polymères Résumé : Pressure and temperature dependency of shear and elongation viscosity and the thermal expansivity and the compressibility determined from PVT data were investigated for propylene homo- and propylene-1-pentene, -1-hexene, 1-heptene and -nonene copolymers and ethylene homopolymer and ethylene-1-butene, 1-pentene and 1-hexene copolymers. The short branching degree dependence of thermal sensitivity and pressure coefficient and the thermal expansivity and the compressibility has been determined. The fractional free volumes were calculated from the viscosity and PVT curves and the thermal expansion coefficient and compressibility factor of fractional free volume were determined. The temperature, pressure and stress dependence of fractional free volume was investigated. The fractional free volume calculated from viscosity data were compared from values comes from PVT measurement. A conversion equation was suggested. DOI : 10.3139/217.2448 En ligne : https://drive.google.com/file/d/19UH4SsyOv-x5wMZ3Vc6X8dsnmau-vtN8/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12442 [article]

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