On the initiation of melt fracture
Article first published online: 9 MAR 2003
Copyright © 1972 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 16, Issue 11, pages 2901–2908, November 1972
How to Cite
McIntire, L. V. (1972), On the initiation of melt fracture. J. Appl. Polym. Sci., 16: 2901–2908. doi: 10.1002/app.1972.070161115
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Received: 24 MAY 1972
The importance of (τ11 − τ22)/τ12 (sometimes called the Weissenberg number) in determining the onset of melt fracture is examined using classical linearized hydrodynamic stability analysis. The constitutive relation used is that proposed by Bird and Carreau. It is shown that simple shearing flow of a viscoelastic fluid becomes unstable at a critical value of the Weissenberg number. Implications with regard to polymer processing are discussed.