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    Chain Deformation in Entangled Polymer Melts at Re-entrant Corners

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    Publication date
    2010
    Author
    Clarke, N.C.
    De Luca, E.
    Buxton, G.
    Hutchings, L.R.
    Gough, Timothy D.
    Grillo, I.
    Graham, R.S.
    Jagannathan, K.
    Klein, D.H.
    McLeish, T.C.B.
    Keyword
    SANS; Re-entrant corners; Chain deformation; Entangled polymer melts; REF 2014
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    Using SANS to map the deformation of individual polymer chains in the vicinity of re-entrant corners in a contraction−expansion flow, we show that stress singularities at such corners, predicted by formulations of fluid dynamics that lack a molecular basis, do not cause extreme deformation of the chains. Multiscale modeling based on a nonlinear tube theory incorporating appropriate relaxation processes quantitatively reproduces the observed scattering, thus providing further evidence for the universality of the tube model for polymer flow.
    URI
    http://hdl.handle.net/10454/5933
    Version
    No full-text in the repository
    Citation
    Clarke N, De Luca E, Buxton G et al (2010) Chain Deformation in Entangled Polymer Melts at Re-entrant Corners. Macromolecules. 43(3): 1539-1542.
    Link to publisher’s version
    http://dx.doi.org/10.1021/ma902324f
    Type
    Article
    Collections
    Engineering and Informatics Publications

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