Calculation by Rouse model

We now study the linear viscoelasticity from the molecular viewpoint. First we consider Rouse dynamics. This corresponds to the case of short 

The viscosity and the steady-state compliance are calculated from G(t), 

These are written in terms of the molecular weight M, the weight of polymers in unit volume p (=cM/NNa), and the gas constant R (=AU ) as 

These results are confirmed for polymer melts with low molecular weight.  

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