Evaluation of Different Methods for Determining the Entrance Pressure Drop in Capillary Rheometry

Two approaches for determining the entrance pressure drop in capillary rheometry were compared with low-density polyethylene and polystyrene melts as test fluids. Direct measurements with the orifice die were found to yield higher values for the entrance pressure drop, and hence lower values for the...

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Bibliographic Details
Main Authors: Aho Johanna, Syrjälä Seppo
Format: Article
Language:English
Published: De Gruyter 2008-12-01
Series:Applied Rheology
Subjects:
Online Access:https://doi.org/10.1515/arh-2008-0022