Wischnewski, A., Monkenbusch, M., Willner, L. et al. (4 more authors) (2002) Molecular observation of contour-length fluctuations limiting topological confinement in polymer melts. Physical Review Letters, 88 (5). Art. No. 058301. ISSN 0031-9007
Abstract
In order to study the mechanisms limiting the topological chain confinement in polymer melts, we have performed neutron-spin-echo investigations of the single-chain dynamic-structure factor from polyethylene melts over a large range of chain lengths. While at high molecular weight the reptation model is corroborated, a systematic loosening of the confinement with decreasing chain length is found. The dynamic-structure factors are quantitatively described by the effect of contour-length fluctuations on the confining tube, establishing this mechanism on a molecular level in space and time.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2002 The American Physical Society. Reproduced in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) The University of Leeds > University of Leeds Research Centres and Institutes > Interdisciplinary Research Centre in Polymer Science and Technology (Leeds) |
Depositing User: | Repository Officer |
Date Deposited: | 17 Aug 2006 |
Last Modified: | 28 Oct 2016 12:33 |
Published Version: | http://link.aps.org/abstract/PRL/v88/e058301 |
Status: | Published |
Publisher: | American Physical Society |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevLett.88.058301 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:1507 |