Strong-Segregation Theory of Bicontinuous Phases in Block Copolymers

Details Strong-Segregation Theory of Bicontinuous Phases in Block Copolymers Strong-Segregation Theory of Bicontinuous Phases in Block Copolymers

1998-04-20

arxiv.org/abs/cond-mat/9804217v1

Macromolecules 31 (1998) 4011-4022

Physics

Condensed Matter

Soft Condensed Matter

14 pages, latex, 21 figures, to appear in Macromolecules

Scientific paper

10.1021/ma980043o

We compute phase diagrams for $A_nB_m$ starblock copolymers in the strong-segregation regime as a function of volume fraction $\phi$, including bicontinuous phases related to minimal surfaces (G, D, and P surfaces) as candidate structures. We present the details of a general method to compute free energies in the strong segregation limit, and demonstrate that the gyroid G phase is the most nearly stable among the bicontinuous phases considered. We explore some effects of conformational asymmetry on the topology of the phase diagram.

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