UPGRADE AND EXTENSION OF THE UNIFICATION TECHNIQUE

Further, it is shown how the unification technique can be extended to other rheological material functions, such as normal stress difference, dynamic viscoelastic parameters, and extensional viscosity, to obtain coalesced curves which are grade and temperature invariant. 

Because of the limited amount of available data for all the cases to be treated in this chapter, the master curves are restricted to only a few candidate polymers, merely to demonstrate the wide applicability of the unification technique. 

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