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Using multiple-mode models for fitting and predicting rheological properties of polymeric melts
Article first published online: 18 OCT 2005
DOI: 10.1002/app.22486
Copyright © 2005 Wiley Periodicals, Inc.
1097-4628/asset/cover.gif?v=1&s=e26a028b9ea53b1db3bdcdf154d4f4fab00f90a5 "Journal of Applied Polymer Science")
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How to Cite
Jiang, B., Kamerkar, P. A., Keffer, D. J. and Edwards, B. J. (2006), Using multiple-mode models for fitting and predicting rheological properties of polymeric melts. J. Appl. Polym. Sci., 99: 405–423. doi: 10.1002/app.22486
Publication History
- Issue published online: 18 OCT 2005
- Article first published online: 18 OCT 2005
- Manuscript Accepted: 21 MAR 2005
- Manuscript Received: 23 AUG 2003
Funded by
- Chemical Engineering Department at the University of Tennessee
- Abstract
- Article
- References
- Cited By
Keywords:
- nonlinear polymers;
- polymer melts;
- rheology;
- viscoelastic properties
Abstract
Several classes of multiple-mode rheological constitutive equations are tested for fitting and predicting viscoelastic flow properties of a typical low-density polyethylene melt. An optimization procedure is used to fit the phenomenological parameters of each model under consideration to experimental data taken in small-amplitude oscillatory shear flow and steady shear flow. These parameter values are then used to generate predictions for transient shear and uniaxial elongational flow experiments, and the predictions are then compared to experimental data. Model successes and failures are discussed, and the outlook for using rheological equations in real design processes is addressed. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 405–423, 2006