Abstract
Blends of poly(ethylene) oxide with poly(epichlorohydrin) and poly(epichlorohydrin- co-ethylene oxide) havebeen prepared by the freeze-drying method from benzene solutions of the polymer mixture at different compositions. The miscibility of the mixtures was studied by DSC. A single glass transition temperature is observed for all the blends studied. Measurement of the melting temperature ( T m) depression for the blends allowed determination of the Flory-Huggins interaction parameter (χ 12) of the two polymers in the melt using the Nishi-Wang equation. The Hoffman-Weeks extrapolation was applied to obtain equilibrium T m data. The values of the χ 12 obtained from T m depression data were negative for all blends. This suggests the miscibility of the components of the blends.
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