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Study on Compatibilized Polyethersulfone and Polycarbonate Blends

A multiblock copolymer of polyethersulfone (PES) and polycarbonate (PC) was used as a compatibilizer for a blend of PES/PC. The morphology, thermal properties, mechanical properties, etc. of the resulting ternary blend systems were investigated. The addition of the compatibizer improved the compatibility between PES and PC. It was found that the interfacial adhesion was enhanced; the size of the dispersed phase was reduced and this resulted in an improvement of elongation at break and tenacity of PES/PC blends and tensile strength and tensile modulus were almost constant.