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APS » Journals » Phys. Rev. Lett. » Volume 88 » Issue 18
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Phys. Rev. Lett. 88, 185702 (2002) [4 pages]

Mode-Coupling Theory for Structural and Conformational Dynamics of Polymer Melts

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S.-H. Chong1,* and M. Fuchs2
1Physik-Department, Technische Universität München, 85747 Garching, Germany
2Institut Charles Sadron, 6 rue Boussingault, 67083 Strasbourg, France

Received 23 January 2002; published 22 April 2002

A mode-coupling theory for dense polymeric systems is developed which unifyingly incorporates the segmental cage effect relevant for structural slowing down and polymer chain conformational degrees of freedom. An ideal glass transition of polymer melts is predicted which becomes molecular-weight independent for large molecules. The theory provides a microscopic justification for the use of the Rouse theory in polymer melts, and the results for Rouse-mode correlators and mean-squared displacements are in good agreement with computer simulation results.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.185702
DOI:
10.1103/PhysRevLett.88.185702
PACS:
64.70.Pf, 61.20.Lc, 61.25.Hq

*Present address: Dipartimento di Fisica, INFM and INFM Center for Statistical Mechanics and Complexity, Università di Roma “La Sapienza,” Piazzale Aldo Moro 2, I-00185, Roma, Italy.

 
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