| Abstract
| - The phase behavior of binary blends of A homopolymer and symmetricAB diblock copolymeris studied within mean-field theory. The occurrence of lamellar,hexagonal, and body-centered-cubic phasesis examined in the weak to intermediate segregation regime and over awide range of homopolymer lengthrelative to that of the diblock. This ratio is found to be acrucial parameter for the topology of the phasediagram. Several different classes of behavior are established,and comparisons are made with experiment.
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