# Relaxation of Shear and Normal Stresses in Double‐Step Shear Deformations for a Polystyrene Solution. A Test of the Doi‐Edwards Theory for Polymer Rheology

@inproceedings{Osaki1981RelaxationOS, title={Relaxation of Shear and Normal Stresses in Double‐Step Shear Deformations for a Polystyrene Solution. A Test of the Doi‐Edwards Theory for Polymer Rheology}, author={Kunihiro Osaki and Shinichi Kimura and Michio Kurata}, year={1981} }

- Published 1981
DOI:10.1122/1.549650

The shear stress σ and normal stress difference ν3, the sum of the first and the second normal stress differences, were measured for a concentrated polystyrene solution in double‐step shear deformations: a shear strain γ1 was applied at time t=−t1, another shear strain γ2 was added at t=0, and the stresses were measured for t>0. When t1 and t were larger than a certain characteristic time τk, the observed results for σ and ν3 were in accord with the prediction of the tube‐model theory of Doi… CONTINUE READING

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