IR and WAXD have been used to investigate the morphology
crystallinity
Tg
intermolecular interaction and compatibility of PEO/PEOx blends as a function of composition. Up to a content of 30wt% of PEO
the blends are completely filled with PEO spherulites
no separated domains of PEOx being observed. The blend with 20wt% PEO shows a twig like morphology and blends with lower than 10wt% show no evidence of crystallinity. Blends with different compositions show a single glass transition temperature ( Tg)
which corresponds to the calculated value by the Fox's equation.With increased PEOx content
degree of crystallinity and melting point of the blends decrease.The interaction energy density(B) between PEO and PEOx has been estimated by equation describing the equilibrium melting point.The results show that PEOx is compatible with noncrystalline PEO
as caused by specific intermolecular interaction between PEO and PEOx.