This title appears in the Scientific Report :
2006
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevLett.96.238302 in citations.
Please use the identifier: http://hdl.handle.net/2128/1151 in citations.
Molecular Observation of Constraint Release in Polymer Melts
Molecular Observation of Constraint Release in Polymer Melts
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. Decreas...
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Personal Name(s): | Zamponi, M. |
---|---|
Wischnewski, A. / Monkenbusch, M. / Willner, L. / Richter, D. / Likhtman, A. E. / Kali, G. / Farago, B. | |
Contributing Institute: |
JCNS; JCNS Streumethoden; IFF-ISM Neutronenstreuung; IFF-INS |
Published in: | Physical review letters, 96 (2006) S. 238302 |
Imprint: |
College Park, Md.
APS
2006
|
Physical Description: |
238302 |
DOI: |
10.1103/PhysRevLett.96.238302 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) Kondensierte Materie |
Series Title: |
Physical Review Letters
96 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/1151 in citations.
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520 | |a 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. | ||
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