Summary
Analysis of reported data on the swelling and deformation of polymer networks shows that the volume-dependent term in the deformational free energy cannot be neglected. The analysis is based on a comparison between the equilibrium modulof networks prepared at various dilutions and of the same degree of swelling and on a comparison between concentration dependences of the interaction parameter for a linear and a crosslinked polymer.
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Ilavský, M., Dušek, K. Experimental evidence of the volume dependence of the deformational free energy of polymer networks. Polymer Bulletin 1, 801–808 (1979). https://doi.org/10.1007/BF00256282
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DOI: https://doi.org/10.1007/BF00256282