Publication

Chain Deformation in Entangled Polymer Melts at Re-entrant Corners

Clarke, N.C.
; 
De Luca, E.
; 
Buxton, G.
; 
Hutchings, L.R.
; ; 
Grillo, I.
; 
Graham, R.S.
; 
Jagannathan, K.
; 
Klein, D.H.
; 
McLeish, T.C.B.
Publication Date
2010
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Keywords
SANS; Re-entrant corners; Chain deformation; Entangled polymer melts; REF 2014
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Peer-Reviewed
Yes
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Accepted for publication
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Engineering and Digital Technology Publications
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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
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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.
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https://doi.org/10.1021/ma902324f
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Article
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