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Chain Deformation in Entangled Polymer Melts at Re-entrant Corners

Clarke, N.; De Luca, E.; Buxton, G.; Hutchings, L.R.; Gough, T.; Grillo, I.; Graham, R.S.; Jagannathan, K.; Klein, D.H.; McLeish, T.C.B.

Authors

N. Clarke

E. De Luca

G. Buxton

T. Gough

I. Grillo

R.S. Graham

K. Jagannathan

D.H. Klein

T.C.B. McLeish



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.

Citation

Clarke, N., De Luca, E., Buxton, G., Hutchings, L., Gough, T., Grillo, I., …McLeish, T. (2010). Chain Deformation in Entangled Polymer Melts at Re-entrant Corners. Macromolecules, 43(3), 1539-1542. https://doi.org/10.1021/ma902324f

Journal Article Type Article
Publication Date Feb 1, 2010
Deposit Date Oct 31, 2011
Journal Macromolecules
Print ISSN 0024-9297
Electronic ISSN 1520-5835
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 43
Issue 3
Pages 1539-1542
DOI https://doi.org/10.1021/ma902324f