3, 4, 7, and 8 have similar trends, and are also similar to those for LDPE 132i given in Ref.
Similar errors were obtained for LDPE 132i also in Ref.
16, where the flow of LDPE 132i in an extrusion die was simulated.
The LDPE resins used in this work are LD200 by ExxonMobil, EF606A by Westlake Polymers; and finally 662I and 132I, provided by Dow Chemicals.
Note that while LDPE II (EF606), LDPE-III (662I), and LDPE-IV (132I) possess a higher zero-shear viscosity than that of LL3001, the presence of LCB causes significant shear thinning and thus their viscosity becomes considerably smaller at high frequencies.
It is noted that the onset of gross melt fracture for the LDPE III (662I) and LDPE-IV (132I) occur at very low rates, less than 15 [s.sup.-1] for both resins.