It is shown that extended irreversible thermodynamics provides a simple and coherent modeling of viscoelastic bodies and dilute polymer solutions. The basic hypothesis underlying the present formalism is to raise, respectively, the inelastic stress tensor or the viscous stress tensor to the status of an independent variable in addition to the standard variables. Concerning viscoelasticity, the Poynting-Thomson, Maxwell, and Kelvin-Voigt models are recovered as particular cases of the formalism. More complicated models, such as Jeffrey's model, can also be obtained. For dilute polymer solutions, one recovers the relaxational spectrum of viscous modes. In particular, our description encompasses the Rouse model. © 1988 Plenum Publishing Corporation.
- irreversible thermodynamics
- polymer solutions