67 4LDPE 6 0 100 C 0 115 C 0 130 C 5 Log (apparent viscosity) (Pa.s) 4 3 1 2 -2 -1 0 1 2 3 4 Log (Shear rate) (1/s) C 6LDPE 6 0 100 C 0 115 C 0 130 C 5 Log (apparent viscosity) (Pa.s) 4 3 1 2 -2 -1 0 1 2 3 4 Log (Shear rate) (1/s) D