Abstract

Parallel superposed flow data are presented for four widely studied solutions, three Aroclor solutions of nearly monodisperse polystyrene and a polyisobutylene in Primol solution. Predictions of two integral models, the Bird-Carreau model and the modified OWFS model, are given and found to describe the data quite well. The experimental results are similar to those of other investigators except that they do not support the relation ω0≈0.5γ̇ proposed by Booij where ω0 is the frequency at which the phase shift is 90°.

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