Rheologica Acta

, Volume 40, Issue 4, pp 317–321

Thermodynamic admissibility of the pompon model for branched polymers

  • Hans Christian Öttinger

DOI: 10.1007/s003970000159

Cite this article as:
Öttinger, H. Rheol. Acta (2001) 40: 317. doi:10.1007/s003970000159


The pompon model for branched polymers is re-formulated within a general framework of nonequilibrium thermodynamics. While the original model of McLeish and Larson is found to be thermodynamically admissible, nonequilibrium thermodynamics strongly suggests several model modifications. As an immediate consequence, a nonzero second normal-stress coefficient in shear flow is predicted by the modified pompon model.

Key words Melts of branched polymersPompon modelNonequilibrium thermodynamicsGENERICSecond normal-stress coefficient

Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Hans Christian Öttinger
    • 1
  1. 1.ETH Zürich, Department of Materials Institute of Polymers, and Swiss Rheocenter, 8092 Zürich, Switzerland e-mail: hco@ifp.mat.ethz.chCH