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Morphology of Symmetric ABC Triblock Copolymers in the Strong Segregation Limit
We investigate the equilibrium morphological properties of a symmetric ABC triblock copolymer in the strong segregation regime. Although a tricontinuous double diamond phase has been experimentally reported within a large region of the phase diagram, we find that neither gyroid nor double diamond cu...
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Published in: | Macromolecules 1998-01, Vol.31 (1), p.59-63 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We investigate the equilibrium morphological properties of a symmetric ABC triblock copolymer in the strong segregation regime. Although a tricontinuous double diamond phase has been experimentally reported within a large region of the phase diagram, we find that neither gyroid nor double diamond cubic phases are stable relative to lamellae and cylinders in the asymptotic limit of strong segregation (SSL). However, this finding does not rule out stable equilibrium cubic phases at intermediate molecular weights or moderate temperatures. Moreover, in contrast to the experimental conclusions, the gyroid structure is shown to be marginally stable with respect to the double diamond structure in the SSL. |
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ISSN: | 0024-9297 1520-5835 |
DOI: | 10.1021/ma971046o |