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Accepted (AM)Open Access (License Unspecified), Open
Journal article
Dynamics of Star Polymers in Fast Extensional Flow and Stress Relaxation
Macromolecules, v 49(17), pp 6694-6699
13 Sep 2016
Abstract
We confirm the observation from Ianniruberto and Marrucci [Macromolecules 2013, 46, 267-275] that entangled melts of branched polystyrenes behave like linear polystyrenes in the steady state of fast extensional flow, by measuring a linear, an asymmetric star, and a symmetric star polystyrene with the same span molecular weight (180 kg/mol). We show that all three melts reach the same extensional steady-state viscosity in fast extensional flow (faster than the inverse Rouse time). We further measure stress relaxation following steady extensional flow for the three melts. We show that initially they relax in a similar way, most likely via arm retraction, at short time, but behave differently at long time due to both the length of the arm and the branch point. The terminal relaxation is described by a Doi and Edwards based model, i.e., considering pure orientational relaxation.
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Details
- Title
- Dynamics of Star Polymers in Fast Extensional Flow and Stress Relaxation
- Creators
- Qian Huang - Technical University of DenmarkSerena Agostini - Durham UniversityLudovica Hengeller - Technical University of DenmarkMaksim Shivokhin - Illinois Institute of TechnologyNicolas J. Alvarez - Drexel UniversityLian R. Hutchings - Durham UniversityOle Hassager - Technical University of Denmark
- Publication Details
- Macromolecules, v 49(17), pp 6694-6699
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 6
- Grant note
- 10-082409 / Danish Council for Independent Research-Technology and Production Sciences; Det Frie Forskningsrad (DFF) 214627-DYNACOP / European Union; European Commission 0602-02179B-EPMEF / Danish Council for Independent Research-Natural Sciences; Det Frie Forskningsrad (DFF) Aage og Johanne Louis-Hansen Foundation
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000383318300057
- Scopus ID
- 2-s2.0-84987657101
- Other Identifier
- 991019168079404721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Polymer Science