  Phase separation of sequence-disordered liquid crystalline polymers, a
promising class of technological and biological relevance, is studied by field
theory, and thermodynamic mechanisms responsible for orientational ordering
observed in experiments, are discussed. The theory developed predicts that
chemical disorder marginally affects the nematic/isotropic biphasic coexistence
width, but strongly impacts ordering; above a critical chemical disorder
threshold orientational ordering is precluded.
