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Rheological Observation of Glassy Dynamics of Dilute Polymer Solutions near the Coil-Stretch Transition in Elongational Flows

Sridhar, T.; Nguyen, D A; Ranganathan, Prabhakar; Prakash, J. Ravi


It has long been conjectured that the macroscopic dynamics of dilute polymer solutions may exhibit a glasslike slowdown caused by ergodicity breaking, in the vicinity of the coil-stretch transition in elongational flows. We report experimental observations using a filament stretching rheometer that confirm the existence of such glassy states. It is observed that different time-dependent elongational strain-rate profiles lead to a pronounced history dependence and aging effects within a narrow...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.98.167801


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