IR and TBA have been used to investigate the morphology
crystallinity
Tg and intermolecular interaction of PEO/PBHE blends as a function of composition and temperature. Up to a content of about 50 wt% of PEO the blend films are completely filled with PEO spherulites
no separated domains of PBHE being observed. Blends with 30?40 wt% of PEO show islands of crystalline PEO within a matrix of PBHE. Blends with lower PEO content (20 wt%) show no evidence of crystallinity. A IR study of PEO PBHE blends reveals that intermolecular interaction occuring between these two polymeric coponents in stronger than that occuring in pur phenoxy.Decrease of crystallinity and increases of Tg in the blend system are accompanied by an increase in the content of PBHE composition
which is in good agreement with FOX equation. These two polymers are compatible in amorphous zone.