Journal article
Effect of Finite Extensibility on Nonlinear Extensional Rheology of Polymer Melts
Macromolecules, v 52(3), pp 915-922
12 Feb 2019
Abstract
We recently showed that two systems have the same nonlinear flow dynamics if they have (1) the same number of entanglements, Z, (2) the same number of Kuhn segments between entanglements, N-e, and (3) a single monomeric friction reduction between all species. Because differences in polymer chemistry result in different values of (1)-(3), these results show that the likelihood of two melts having the same nonlinear behavior is improbable. This work determines the dependence of the nonlinear extensional flow behavior on N-e for three polymer melts: polystyrene, poly(methyl methacrylate), and poly(tert-butylstyrene). We show that polymer melts with the same Z have almost identical scaled linear viscoelasticity. Extensional rheology at constant strain rate shows strain hardening depends strongly on the value of N-e. More specifically, our data suggest a power-law dependence of steady state stress on the Weissenberg number which increases with increasing N-e.
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Details
- Title
- Effect of Finite Extensibility on Nonlinear Extensional Rheology of Polymer Melts
- Creators
- Samantha L. Morelly - Drexel UniversityLuisa Palmese - Drexel UniversityHiroshi Watanabe - Kyoto UniversityNicolas J. Alvarez - Drexel University
- Publication Details
- Macromolecules, v 52(3), pp 915-922
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 8
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000458937700014
- Scopus ID
- 2-s2.0-85061664423
- Other Identifier
- 991019168013804721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Polymer Science