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The relevance of entry flow measurements for the estimation of extensional viscosity of polymer melts

Gotsis Alexandros, Odriozola Arantza

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/68A4431D-D17F-4A1C-8279-C6137B492381-
Αναγνωριστικόhttp://link.springer.com/article/10.1007/s003970050130-
Αναγνωριστικόhttps://doi.org/10.1007/s003970050130-
Γλώσσαen-
Μέγεθος8 pagesen
ΤίτλοςThe relevance of entry flow measurements for the estimation of extensional viscosity of polymer meltsen
ΔημιουργόςGotsis Alexandrosen
ΔημιουργόςΓκοτσης Αλεξανδροςel
ΔημιουργόςOdriozola Arantzaen
ΕκδότηςSpringer Verlagen
ΠερίληψηThe extensional viscosity of some flexible chain polymers and a thermotropic liquid crystalline polymer was measured in uniaxial extensional flow at constant extension rate. Power law functions were found for the dependence of the extensional viscosity at constant accumulated strain on strain rate. The stress growth curves were compared with measurements in axisymmetric entry flow, where both elongation and shear occur. The comparison showed that the values of the extensional viscosity calculated from the measurements in the entry flow correspond to the ones calculated from the viscosity growth measured in uniaxial elongation and averaged over extensional strain equal to what is accumulated on the fluid as it flows from the barrel into the capillary.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2015-11-14-
Ημερομηνία Δημοσίευσης1998-
Θεματική ΚατηγορίαEntry flow methoden
Θεματική ΚατηγορίαExtensional viscosity en
Θεματική ΚατηγορίαExtensional strainen
Θεματική ΚατηγορίαPolymer meltsen
Βιβλιογραφική ΑναφοράA. D. Gotsis and A. Odriozola, "The relevance of entry flow measurements for the estimation of extensional viscosity of polymer melts", Rheolog. Acta, vol. 37, no. 5, pp. 430-437, Nov. 1998. doi:10.1007/s003970050130en

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