Elasticity of polymer gels: Effect of solvent quality on the shear modulus of poly(vinyl acetate) networks |
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Authors: | Ferenc Horkay,Mikló s Zrinyi,Erik Geissler,Anne-Marie Hecht |
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Abstract: | The dependence of the shear modulus and of the swelling equilibrium concentration of polyvinylacetate gel homologues in equilibrium with excess isopropyl alcohol is investigated in the temperature range 30≤T≤70°C. At the theta temperature (T=52°C) the volume elastic modulus was also determined and compared with the shear modulus. The results are interpreted in terms of a free-energy function derived on the basis of the network unfolding hypothesis. |
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