Mf. Schulz et al., EPITAXIAL RELATIONSHIP FOR HEXAGONAL-TO-CUBIC PHASE-TRANSITION IN A BLOCK-COPOLYMER MIXTURE, Physical review letters, 73(1), 1994, pp. 86-89
Small-angle neutron scattering experiments have revealed an epitaxial
relationship between the hexagonal cylinder phase, and a bicontinuous
cubic phase with Ia3dBAR space group symmetry, in a poly(styrene)-poly
(2-vinylpyridine) diblock copolymer mixture. Proximity to the order-di
sorder transition and an inelastic low frequency rheological response
suggest that the cubic phase is stabilized by fluctuations. These resu
lts identify block copolymers as model compounds for investigating the
thermodynamics and dynamics of complex ''soft'' condensed matter.