In this last chapter of microscopic analyses, we consider some aspects of polymer solutions with special interest in justifying the non-equilibrium generalizations of the free energy and the entropy and their relation to the equation of evolution for the viscous pressure tensor. The expressions obtained in this chapter will be used in the following ones, where we will pay special attention to flow-induced effects in polymer solutions. The main reason for this interest is that the relaxation times in polymers are much longer than in ideal gases or in fluids of small molecules. Thus, the non-equilibrium modifications of the equations of state are easier to observe and have more practical interest than in the above mentioned systems.
KeywordsEntropy Cage Macromolecule
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