A. Killis, J. L. Nest, A. Gandini
Apr 1, 1982
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Journal
Macromolecular Chemistry and Physics
Abstract
The viscoelastic behaviour of polyether-based polyurethane networks containing sodium tetraphenylborate was investigated by means of dynamic mechanical measurements. A quantitative analysis of the storage modulus dependence on temperature, frequency, and salt concentration gives rise to three superposition correlations, viz. frequency-temperature, frequency-concentration, and concentration-temperature. The frequency-temperature superposition follows a WLF behaviour, while the other two are approximately linear expressions particularly well verified in the zone of the transition state.