Flow instability in capillary extrusion of plasticized poly(vinyl chloride)

Document Type

Article

Publication Date

10-31-2001

Abstract

Flow instability in a capillary extrusion is studied for a high molecular weight, plasticized poly(vinyl chloride) (PVC). The onset of melt fracture correlates with the long time relaxation ascribed to the generation and/or growth of PVC crystallites. An increase in the residence time in the cylinder leads to this long time relaxation and results in the melt fracture, although the apparent shear stress remains constant, irrespective of the residence time. The extrudate temperature and the species of the plasticizer also have a significant influence on the apparatus of the extruded products.

Identifier

0035980548 (Scopus)

Publication Title

Journal of Applied Polymer Science

External Full Text Location

https://doi.org/10.1002/app.1961

ISSN

00218995

First Page

1277

Last Page

1283

Issue

5

Volume

82

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