Influence of compatibilization on the mechanical behavior and morphology of polyethersulfone/polycarbonate blends.

For the case of the ternary blend system of polycarbonate (PC), polyethersulfone (PES) and a multi-block random copolymer of PES and PC, it was found that the interfacial adhesion was enhanced, the size of the dispersed phase was reduced and PES and PC formed an interlocking structure with the multi-block random copolymer. This suggests that the addition of the compatibilizer may have improved the miscibility between PES and PC, and yielded an improvement of the mechanical properties of the blends. The compatibility behavior of PES with PC was examined using differential scanning calorimetry, scanning electron microscopy, and dynamic mechanical analysis. [ABSTRACT FROM AUTHOR]