Journal article
An Evaluation of Expressions Predicting Die Swell
Abstract
Die swell measurements for polystyrene samples of narrow molecular weight distribution and their blends have been made using a capillary viscometer. For the capillaries studied, the swelling ratios were nearly independent of L/D (length/diameter) but strongly dependent on the distribution of molecular weights. The broader the distribution, the larger the swelling ratio for the same extrusion pressure. The recoverable shear at the wall, which is …
Authors
Vlachopoulos J; Horie M; Lidorikis S
Journal
Journal of Rheology, Vol. 16, No. 4, pp. 669–685
Publisher
Society of Rheology
Publication Date
December 1, 1972
DOI
10.1122/1.549269
ISSN
0148-6055