[article]
| Titre : |
On PVT and rheological measurements of polymer melts : Correction of the hole fraction-viscosity relationship |
| Type de document : |
texte imprimé |
| Auteurs : |
T. Sedlacek, Auteur ; R. Cermak, Auteur ; B. Hausnerova, Auteur ; M. Zatloukal, Auteur ; A. Boldizar, Auteur ; P. Saha, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 286-295 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
The relation between PVT and rheological measurements of several polymer melts including polyethylenes, polypropylene, polystyrene, poly(methyl methacrylate), and polycarbonate has been taken into investigation. Pressure-temperature dependent viscosities, determined on rotational and backpressuremodified capillary rheometers, were fitted through the Carreau-Yasuda model. PVT data was analyzed by the help of the Simha-Somcynsky equation of state (SS EOS). The thermodynamical parameters of the SS EOS were connected to constantstress viscosity (experimental) and zero-shear viscosity (extrapolated). The Doolittle relationship was modified into the form of eta = C0 exp (C1 ln (h'/h)). The relation was employed and tested for the data evaluation. It proved to be a good tool for linearization of PVT and rheological data. |
| DOI : |
10.3139/217.1890 |
| En ligne : |
https://drive.google.com/file/d/14kdLyE9sVuNFGcf1lzesA_oVBwwWLx7e/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3065 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XX, N° 3 (09/2005) . - p. 286-295
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On PVT and rheological measurements of polymer melts in INTERNATIONAL POLYMER PROCESSING, Vol. XX, N° 3 (09/2005)
