2002 Volume 51 Issue 4 Pages 465-469
High frequency viscoelasticity of an aqueous solution of associating polymer was directly measured. Viscoelasticity of the solution was determined at frequencies 10-1-102 rad s-1 with a conventional dynamic measurement method and at frequencies 10-2-104 rad s-1 with pulse strain method and surface loading method. The viscoelastic behavior of the solution was close to that of the Maxwell model in a range of polymer concentration 2-5wt%. Relaxation time τ and modulus G were determined by fitting data to the Maxwell model. The value of G increased with polymer concentration, while τ was independent of polymer concentration. These results were in good agreement with the prediction of Tanaka's theory.
