Small-angle X-ray scattering analysis of the periodic tricontinuous network structure of symmetric ABC triblock copolymers

The periodic tricontinuous network structure (TNS) of symmetric isoprene-styrene-2vinylpyridine triblock copolymers has been studied by small-angle X-ray scattering (SAXS). The observed SAXS profiles were compared with the calculated diffraction intensities based on the model electron density distributions constructed for a pair of surfaces parallel to the infinite periodic minimal surface.