초록 |
Recently, a new and simple field-theoretic computer simulation method that allows for finite compressibility and pressure effects has been developed based on a compressible random-phase approximation (RPA) theory. Free volume effects are incorporated in the free energy functional for the dissipative dynamics through effective RPA interactions that account for the excluded volume and the attractive nonbonded interactions. In this work, the 2-dimensional morphology development of the A-b-B/A blends that have baroplastic character is studied using the field-theoretic simulation tools. The changes in the structures by varying homopolymer composition, temperature, and pressure are demonstrated in a visual way, which will prove useful in designing nanostructured materials from block copolymer blends. |