TRANSITION TEMPERATURES OF THERMOTROPIC LIQUID CRYSTALLINE POLYMERS AND POLYSULFONE IN SITU COMPOSITES

Abstract The effects of liquid crystalline polymers’ structure, thermal history and compatibilizers on the transition temperatures of polysulfone with thermotropic liquid crystalline polymers’ in-situ composites were studied. The compatibility of polysulfone and liquid crystalline polymers obeyed the similar structure rule, and it could be improved by adding block copolymers.High heating rate could get a big peak in DSC curve, and it is easy to obtain T_g value by second heating. The thermal mechanical properties of these blends were also studied.