Viscoelastic characterization and prediction of a wormlike micellar solution

In the present paper, a structure-based viscoelastic model is employed to characterize and predict the viscoelastic properties of a wormlike micellar solution at 20 °C. Considering the effect of shear rate on linear viscoelastic property, a structural parameter f is obtained. Meanwhile, another structural parameter ζ is determined when the effects of time and shear rate are considered simultaneously. Both structural parameters are calculated by using linear interpolation method. The startup experiment can be described well by the model. The prediction on the shear stress in the ramping-up region of the hysteresis loop experiment shows an apparent relation between the rheological behaviors in the startup experiment and those in the hysteresis loop experiment. For the hysteresis loop experiment with 30 s time interval, the defect of the calculation in 0.001–0.01 s−1 is due to the lack of the ramping-down history effect. In addition, the model can improve completeness of perimental data used for characterizing rheological property. Graphic abstract: [Figure not available: see fulltext.]. © 2021, The Chinese Society of Theoretical and Applied Mechanics and Springer-Verlag GmbH Germany, part of Springer Nature.