Zero-Shear Rate. Zero-shear rate is a concept that could only be loved by a mathematician. Practically, it is not possible to measure viscosity at a shear rate of zero since viscosity is a measurement ...

Figure 1. Typical flow curve of polymer melts. Image Credit: Dynisco. The flow curve of polymer melts is bound by two limiting slopes (dashed lines) which determine the zero-shear viscosity value (n ...