Abstract
The theory of linear viscoelasticity is able to describe the time dependent flow behaviour of viscoelastic liquids in the range of small shear rates K. Using a memory function, defined for example in 1, with a suitable set of constants the transient zero viscosity ηo(t,K→O) can be calculated. The theory of linear viscoelasticity however, predicts no shear rate dependency of the viscosity as aobserved for nearly all polymers at higher shear rates.
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References
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Gleissle, W. (1980). Two Simple Time-Shear Rate Relations Combining Viscosity and First Normal Stress Coefficient in the Linear and Non-Linear Flow Range. In: Astarita, G., Marrucci, G., Nicolais, L. (eds) Rheology. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-3743-0_85
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DOI: https://doi.org/10.1007/978-1-4684-3743-0_85
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