Professor Suzanne Fielding suzanne.fielding@durham.ac.uk
Professor
Simple Model for the Deformation-Induced Relaxation of Glassy Polymers
Fielding, S.M.; Larson, R.G.; Cates, M.E.
Authors
R.G. Larson
M.E. Cates
Abstract
Glassy polymers show “strain hardening”: at constant extensional load, their flow first accelerates, then arrests. Recent experiments have found this to be accompanied by a striking and unexplained dip in the segmental relaxation time. Here we explain such behavior by combining a minimal model of flow-induced liquefaction of a glass with a description of the stress carried by strained polymers, creating a nonfactorable interplay between aging and strain-induced rejuvenation. Under constant load, liquefaction of segmental motion permits strong flow that creates polymer-borne stress. This slows the deformation enough for the segmental modes to revitrify, causing strain hardening.
Citation
Fielding, S., Larson, R., & Cates, M. (2012). Simple Model for the Deformation-Induced Relaxation of Glassy Polymers. Physical Review Letters, 108(4), Article 048301. https://doi.org/10.1103/physrevlett.108.048301
Journal Article Type | Article |
---|---|
Publication Date | Jan 1, 2012 |
Deposit Date | Jan 31, 2012 |
Publicly Available Date | Nov 28, 2012 |
Journal | Physical Review Letters |
Print ISSN | 0031-9007 |
Electronic ISSN | 1079-7114 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 108 |
Issue | 4 |
Article Number | 048301 |
DOI | https://doi.org/10.1103/physrevlett.108.048301 |
Public URL | https://durham-repository.worktribe.com/output/1510078 |
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Copyright Statement
© 2012 American Physical Society
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