The measurements of viscosity were taken after 2 min at five different speeds (6, 12, 30, 60, 100 rpm) after the spindle was immersed, so as to allow for thermal equilibrium and to eliminate the effect of immediate time dependency.
The measurements of viscosity were taken after2 min at five different speeds (6, 12, 30, 60, 100 rpm) afterthe spindle was immersed, so as to allow for thermalequilibrium and to eliminate the effect of immediate timedependency.