Electroconductivity. By using a special measuring cell, the tem- perature dependence of the volume electrocon- ductivity of the binary systems of XXX and NaSCN was determined at frequency 800 Hz on heating and cooling in the interval from 20 to 180oC. Parts of these results are shown in Fig. 4. – 17:1; curve 4 – 4.35:1. Electroconductivity of these systems in- creases by 3 or 4 orders on elevating the tem- perature from 20 to 180oC. The curves for the dependence logσ/T-1 show two linear sections with different slopes. The temperature, at which the slope changes, coincides with the melting temperature of the crystalline PEO phase which is present in the binary systems under study. Using the Arrenius equation σ = Aexp(-E/RT), the activation energy of ionic electrocinductivity of these systems which is proportional to the slope of the linear sections of the dependence logσ/T-1 can be calculated (Table 2).
