Abstract: | By progressively increasing the hydrogen bonding interaction, otherwise immiscible polymer blends composed of modified polystyrene and poly(alkyl methacrylate) can achieve miscibility and complexation successively. The differences in chain arrangement between the states of mere miscibility and complex can be detected by a modified NRET fluorescence technique. Immiscibility-miscibility-complexation transitions have been proved to be of generality for polymer blends with controllable hydrogen bonding. |