SOLID-STATE NMR-STUDIES OF INTERMOLECULAR INTERACTIONS IN SOLID POLYMER BLENDS

Most binary mixtures of polymers are not miscible on the molecular lev el in the absence of specific intermolecular interactions. Solid-state C-13 and D-2 C-13,H-1 NMR has been used to study miscible polymer ble nds in an attempt to identify the interacting groups and gain a molecu lar level understanding of the fortes that drive miscibility. Selectiv e polarization transfer methods, either solid-state nuclear Overhauser effects or windowless isotropic mixing, were used to study these inte ractions, and the interacting groups in several strongly and weakly in teracting polymer blends were identified.