Mode-coupling theory for structural and conformational dynamics of polymer melts

Details Mode-coupling theory for structural and conformational dynamics of polymer melts Mode-coupling theory for structural and conformational dynamics of polymer melts

2002-04-04

arxiv.org/abs/cond-mat/0204114v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures, Phys. Rev. Lett. in press

Scientific paper

10.1103/PhysRevLett.88.185702

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.

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