Search results for "Stress dependence"

Non linear viscoelasticity of polymeric liquids interpreted by means of a stress dependence of free volume

1977

Several existing data of non-linear viscoelasticity of amorphous polymers aboveT g are here interpreted by assuming that the free volume changes during the motion. Equations of a stress-temperature equivalence are suggested which favorably compare with the data. It is also shown that the volume variations are sufficiently small to have escaped observation.