Rheological studies on novel high performance polyarylethersulfones

The flow properties of three different synthesized series of random copolymers of poly(aryl ether sulfone) (PES), poly aryl ether ether sulfone (PEES), and poly aryl ether biphenyl ether sulfone(PEBES) have been studied.The dependence of the glass transition temperature (T g ) on the chemical structure is explored.The rheology studies are done as functions of copolymer compositions at different temperatures above T g .