Ten Phases of MBBA (A New Phase Diagram)

Abstract

Abstract The solid state polymorphism of MBBA has been studied and its phase diagram completed. Literature data were analysed and, essentially, neutron scattering results were used to describe the phase situation in MBBA. Transitions between the metastable solid modifications-originating from the fast-cooled glassy state-are considered and in particular, the room temperature range was emphasized. As a total, 10 states of MBBA are included in the new phase diagram: 7 solid modifications, a metastable state, the nematic and the isotropic liquid phases.