คำศัพท์เฉพาะทางเคมีDSC thermograms show a glass transition temperature at around 54 °C, which is often indicated as DSC Tg (onset) value [48]. Although literature results confirm that the glass transition temperature of pure PEO lies circa − 57.6 °C [46] and for PVC about 85 °C, present PVC/PEO blend samples show a single Tg that lies between those of the individual components, indicating that the present polymer blend is miscible. Furthermore, the glass transition temperature shifts towards lower temperatures with the addition of various salt concentrations. This effect is the result of the reduction in cohesive forces of attraction among polymer chains due to the penetration of the salt ions into the polymer matrix. It establishes polar attractive forces between ions and chain segments, thereby increasing the segmental mobility. Consequently, the amorphous phase becomes more flexible. The percentage of the relative crystallinity of complexed polymer blend electrolytes was calculated from their DSC curves based on the following equation, assuming that the pristine blend is 100% crystalline [49], [50] and [51],
equation(1)
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