Macroscopic thermodynamics of flowing polymers derived from systematic coarse-graining procedure

Patrick Ilg

Physica A: Statistical Mechanics and its Applications, 2008, vol. 387, issue 26, 6484-6496

Abstract: Macroscopic thermodynamics of flowing polymeric liquids in terms of a single conformation tensor is derived from atomistic or mechanical bead-spring models via a systematic coarse-graining procedure. The macroscopic equations derived here are consistent with earlier works where they have been proposed on more phenomenological grounds. The present approach provides a microscopic justification of these equations including expressions for the transport coefficients. In addition, the macroscopic equations derived here consider second-order dissipative processes that arise due to cross-correlated fluctuations on the macroscopic variables and insofar offer an extension of the previously chosen level of description.

Keywords: Coarse-graining; Unentangled polymer melt; Nonequilibrium statistical mechanics; Constitutive equations; Non-isothermal rheology (search for similar items in EconPapers)
Date: 2008
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:387:y:2008:i:26:p:6484-6496

DOI: 10.1016/j.physa.2008.08.032

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