Irreversible deformation of macromolecular networks |
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Authors: | H -F Enderle H -G Kilian Th Vilgis |
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Institution: | (1) Present address: Abt. Exp. Physik, UniversitÄt Ulm, Oberer Eselsberg, Ulm, Germany |
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Abstract: | Based upon a thermodynamical approach, the generalized Onsager type of relaxation of van der Waals networks is presented. By linearly and identically coupling the set hidden variables to the network, the memory function of the system can be related to the equilibrium strain-energy function. The relaxation behavior of real networks on stretching can quantitatively be described by means of a distribution of relaxation times known from small strain experiments. Some new and interesting conclusions are discussed as to how the macroscopically non-linear visco-elastic response might be interpreted. |
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Keywords: | Van der Waals networks strain-energy function memory function irreversible thermodynamics relaxation |
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