Quiz Lab 1
Melt Viscosity

1)  Sketch a plot of log viscosity versus log shear rate for a polymer melt. 

2)  Indicate the power-law fluid regime and the location of the extrapolated zero shear rate viscosity.

3)  Sketch a plot of log of the zero shear rate viscosity versus log of the molecular weight for a typical series of polymers.

4)  Indicate the entanglement molecular weight on this plot and the two regimes of power-law scaling.

5)  Sketch a plot of log viscosity versus 1/T (with T in Kelvin). 

6)  What does this plot indicate about viscosity?