Slow mode dynamic moduli

Such a dramatic change is also reflected in the time-dependence of the dynamical structure factor. The line shape, non-exponential in the gel regime at the 0-temperature, becomes more and more exponential as we increase the temperature from 35°C to 65 C. A single exponential line is observed in polystyrene-benzene system.This is due to the fact that the relative intensity I /Ig of the slow mode (x ) to the fast mode (x ) is proportional to the ratio of the elastic modulus to the osmotic bulk modulus... 

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