Phase behavior and conductivity in poly(ethylene oxide)-sodium thiocyanate systems
作者： Y. L. Lee , B. Crist
DOI: 10.1063/1.337781
关键词:
摘要: Observed phases and transition temperatures in mixtures of poly(ethylene oxide) sodium thiocyanate (PEO–NaSCN) are described by a binary phase diagram. The components this system semicrystalline PEO which can dissolve salt up to mole fraction Xs=0.023, crystalline complex composition PEO3.5NaSCN (Xcc=0.22). salt‐deficient component is normally formed eutectic reaction with temperature Te=63 °C. Conductivity PEO–NaSCN calculated assuming that only ions the amorphous, liquidlike regions contribute charge transport. This model predicts positive discontinuity conductivity on melting, sharp maximum at low concentrations, agreement observed behavior.
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