Evaluation and comparison of water sorption and viscoelasticity of three commercially available long term soft lining materials

Null hypothesis stated that there was no difference in the water soprtion and viscoelastic properties of three commercially available soft liners before and after thermocycling procedure. The thermocycling was done to artificially age the specimens replicating a time period of one year. the tan δ value are of prime importance. a perfectly elastic material has tan δ of zero. Higher values show more stiff materials.