A MISCIBILITY SURVEY OF BISPHENOL-A CARBONATE CYCLIC OLIGOMERS WITH ASPECTRUM OF GLASSY-POLYMERS

Bisphenol A (BPA) carbonate cyclic oligomers have been found to be mis cible with a wide spectrum of glassy polymers from polystyrene to arom atic polysulfones. The surprising breadth of the cohesive energy densi ty (CED) range corresponding to this spectrum is roughly comparable to the breadth of the CED range of small molecule solvents that swell a given glassy polymer heavily, and much smaller than the breadth of the CED range of miscibility seen in a polymer/polymer blend series. Poss ible sources of this behaviour are indicated.