A generalization of the Rouse-Zimm model |
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Authors: | H. C. Öttinger |
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Affiliation: | (1) Fakultät für Physik der Universität Freiburg, Freiburg im Breisgau, F.R.G.;(2) Present address: Chemical Engineering Department, University of Wisconsin - Madison, 1415 Johnson Drive, 53705 Madison, Wisconsin, USA |
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Abstract: | The idea of consistently averaging the hydrodynamic interaction and its various consequences for Hookean dumbbells are reviewed. For long chains this idea can be used to generalize the Rouse-Zimm model for polymer solutions. Unlike the usual Rouse-Zimm model, the new model for steady shear flow predicts a nonzero second normal stress coefficient and shear rate dependent material functions. In the limit of long chains, the viscosity and the normal stress coefficients are universal functions of the reduced shear rate.This paper was presented at the Frühjahrstagung des Fachausschusses Polymerphysik der Deutschen Physikalischen Gesellschaft at Kaiserslautern (West Germany), March 12–14, 1986. |
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Keywords: | Rheology hydrodynamicinteraction Rouse-Zimm model |
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