STABILIZING CO-CONTINUOUS POLYMER BLEND MORPHOLOGIES WITH ABC BLOCK-COPOLYMERS

We suggest that ABC triblock copolymers provide a convenient and effec tive route to emulsifying blends of A and C homopolymers into co-conti nuous morphologies over a wide range of compositions. Direct transitio ns between disordered tricontinuous phases (''ABC microemulsions'') an d spatially-periodic tricontinuous phases (e.g. gyroid or double-diamo nd cubic phases) should be possible in appropriately formulated alloys . We envision a broad range of potential applications to thermoplastic and thermoset polymeric materials.