Miscibility and interactions in a mixture of poly(ethylene oxide) and an aromatic poly(ether amide)

Results concerning a mixture of an experimental aromatic poly(ether amide) and poly(ethylene oxide) are reported. The presence of ether groups in both polymers, and the possibility of a great number of intermolecular hydrogen bonds, give rise to polymer-polymer interactions that result in partial miscibility, as it has been demonstrated by FT-i.r., differential scanning calorimetry and optical microscopy. These results are qualitatively consistent with theoretical phase diagrams calculated from an association model which emphasizes the role of hydrogen bond interactions in this type of blend. (C) 1997 Published by Elsevier Science Ltd. All rights reserved.