This was accomplished by using transmission electron microscopy and image analysis to construct quantitative, ternary phase diagrams. Our study of sequence distribution effects is extending to include copolymer diffusion and interfacial fracture toughness studies, thereby evaluating the ability of copolymers to segregate to and strengthen interfaces. Of particular interest is the influence of homopolymer added to the diblock copolymer. Our earlier morphological studies have identified both ordered and disordered micellar structures in these blends of block copolymer and homopolymer. Presently we are working to understand the interdependence of shear deformation, local and global morphology, and mechanical properties in block copolymer systems.
Isothermal morphology diagrams for binary blends of diblock copolymer and homopolymer.
Deuterium effects on blend miscibility of an alternating copolymer and a homopolymer.