Chain Deformation in Entangled Polymer Melts at Re-entrant Corners

Description

No / 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.

Links & Downloads

1. 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.
2. http://hdl.handle.net/10454/5933
3. https://doi.org/10.1021/ma902324f

Tags

Additional Fields

Identifer	oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/5933
Date	January 2010
Creators	Clarke, N.C., De Luca, E., Buxton, G., Hutchings, L.R., Gough, Tim, Grillo, I., Graham, R.S., Jagannathan, K., Klein, D.H., McLeish, T.C.B.
Source Sets	Bradford Scholars
Detected Language	English
Type	Article, No full-text in the repository