Above Tg: temperature evolution of viscosity and main relaxation times
Amorphous and glassy states of molecular and pharmaceutical compounds: general properties

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Above Tg: temperature evolution of viscosity and main relaxation times
Amorphous and glassy states of molecular and pharmaceutical compounds: general properties

Author : Marc DESCAMPS

Publication date: April 10, 2017 | Lire en français

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10. Above Tg: temperature evolution of viscosity and main relaxation times

We are interested here in the temperature dependence of a quantity such as the viscosity η whose value is related to the mean relaxation time τα , (Maxwell's equation (1)). The main relaxation time τα can also be evaluated by various analyses carried out in dynamic mode (figure 20).

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