ABSTRACT
Polycarbonates can exist as equilibrium amorphous liquids, as two-phase crystal solids/liquids, as nonequilibrium glasses, or as nonequilibrium crystal/glass solids. Polycarbonates containing aromatic groups in their backbone units are normally found to be glassy solids or mixed glass/crystal solids at room temperature. Of the aromatic polycarbonates, bisphenol A polycarbonate (BPA-PC) is by far the one of greatest technological importance and therefore the best characterized with respect to structure-property relationships.
