화학공학소재연구정보센터
Journal of Chemical Physics, Vol.116, No.7, 3134-3140, 2002
Field theory and segmental alignment analysis for a solution of sequence disordered liquid crystalline polymers
A field theory for the many-chain mesogen/flexible sequence model is developed. The theory is solved using a creation-annihilation formalism based on a reference state that recovers the Gupta-Edwards solution for the many-chain homopolymer system. Orientational averages are performed, and a nonlinear equation for the orientational tensor-dependent free energy is derived. The effects of flexibility, stiffness and intersegment alignment on orientational ordering, the nematic/isotropic density threshold, and the segmental orientational ordering at the nematic/isotropic transition is determined.