Intermittent dynamics in transient polymer networks under shear: Signs of self-organized criticality

J.H.B. Sprakel, E. Spruijt, M.A. Cohen Stuart, M.A.J. Michels, J. van der Gucht

    Research output: Contribution to journalArticleAcademicpeer-review

    13 Citations (Scopus)

    Abstract

    In this paper we demonstrate an unusual behavior in the shear-banded flow of a viscoelastic fluid. We report large and patterned fluctuations in the shear stress in an apparently fluid material undergoing steady shear, which we interpret as an intermittent and microscopic fracture and self-healing process. The statistical pattern of the fluctuations is indicative of self-organized criticality, and their magnitude can be directly related to the constitutive instability that underlies the shear banding
    Original languageEnglish
    Article number056306
    Number of pages5
    JournalPhysical Review. E, Statistical nonlinear, and soft matter physics
    Volume79
    DOIs
    Publication statusPublished - 2009

    Keywords

    • associating polymers
    • stick-slip
    • flow

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