Determining the Segregation Degree from Parameters of Relaxation Maxima

Determining the Segregation Degree from Parameters of Relaxation Maxima 

It was aheady mentioned that the properties of the polymer blends and alloys are determined by their microphase structme. The microphase state may be characterized by the degree of the microphase separation (segregation degree) and by the size and distribution of microregions of phase separation. These characteristics are connected to the history of the system. The system with uncompleted phase separation is characterized by the segregated struc- 

Sperling [166] proposed a method for the estimation of the degree of incompatibility by introducing the concept of the incompatibility number N, which may be defined as 

These changes may be considered as changes in the number of relaxator units (segments) participating in the cooperative process of glass formation at the given temperature. A decrease in h for phase 1 indicates that the number of these units has decreased due to their interaction with the relaxator units of phase 2, and vice versa. The maxima may expand in this case. 

Next we consider the convergence of max tan 3 when the compatibiUty increases. To this end, we introduce the empirical parameter At into the expression for a, considering the shift of the maximum across the temperature scale for phases 1 and 2  

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