An investigation into the behaviour of SPBT and SPBT/PC blends

Thermal, wide angle X-ray scattering and light microscopy studies have been carried out on sulphonated poly(butylene terephthalate) (SPBT) and its ble nds with polycarbonate (PC). A better understanding of the morphology and b ehaviour of the ionomer SPBT as well as initial information on the miscibil ity and level of crystallinity of the new family of ionomer blends, SPBT/PC , has been obtained. The samples with a degree of sulphonation above 7 mol. % showed the partial miscibility as well as improved optical clarity with r espect to blends of non-sulphonated PBT/PC. (C) 1999 Elsevier Science Ltd. All rights reserved.