Zamponi, M.
[Author];
Wischnewski, A.
[Author];
Monkenbusch, M.
[Author];
Willner, L.
[Author];
Richter, D.
[Author];
Likhtman, A. E.
[Author];
Kali, G.
[Author];
Farago, B.
[Author]
Molecular Observation of Constraint Release in Polymer Melts
You can manage bookmarks using lists, please log in to your user account for this.
Media type:
E-Article
Title:
Molecular Observation of Constraint Release in Polymer Melts
Contributor:
Zamponi, M.
[Author];
Wischnewski, A.
[Author];
Monkenbusch, M.
[Author];
Willner, L.
[Author];
Richter, D.
[Author];
Likhtman, A. E.
[Author];
Kali, G.
[Author];
Farago, B.
[Author]
Published:
APS, 2006
Published in:Physical review letters 96, 238302 (2006). doi:10.1103/PhysRevLett.96.238302
Footnote:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Description:
The dynamics of binary polymer blends of few labeled long chains in successively shorter matrix chains has been investigated by neutron spin echo (NSE) spectroscopy. For the first time the effect of constraint release on the chain relaxation has been directly observed on a microscopic scale. Decreasing the matrix chain length reduces the topological confinement until unconfined Rouse motion is observed, when the matrix chains are too short to confine the long chain in a tube. Whereas an analytical description of the effect is not yet available, a new simulation based on the slip-link model shows perfect agreement with the NSE data over the full range of matrix molecular weights.