The phase diagram of a solution of stiff-chain macromolecules:: A Monte Carlo simulation

Computer simulation was used to construct the phase diagram of a solution of stiff-chain macromolecules 20 monomeric units long with van der Waals-type volume interactions. The transition of the solution from the isotropic to the nematic ordered state was studied and the multidomain effect in the ordered phase was considered. The phase diagram in the variables temperature-concentration included regions of stability of dilute isotropic, concentrated isotropic, and concentrated nematic phases. The results of computer simulation are compared with a theoretical phase diagram for a solution of semiflexible chains and experimental data.