Flow Curve Standardisation

As in Eq. (35), the constant in Eq. (36) can be evaluated by determination of Yrrit in one example. For the shear rate dependent viscosity, it then follows that Cn( y) ris)  

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Figure 1.2 illustrates, using the same sample, how the rate of cooling through Tg and storage at room temperature bring into evidence the presence of the enthalphy relaxation effect as a superposition on the heat flow curve shift. Figure 1.2 also shows the extent of the Tg(onset)-value differences due to the presence of these endothermic peaks. It will be clear that a standardised Tg-value determination procedure is necessary to obtain reproducible results ... 

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