期刊名称：Computational Methods in Science and Technology
印刷版ISSN：1505-0602
出版年度：2011
卷号：17
期号：1-2
页码：17-23
出版社：Poznan Supercomputing and Networking Center
摘要：Using the self-consistent field theory (SCFT) in spherical unit cells of various dimensionalities, D, a phase diagram of a diblock, A-b-B, is calculated in 5 dimensional space, d = 5. This is an extension of a previuos work for d = 4. The phase diagram is parameterized by the chain composition, f, and incompatibility between A and B, quantified by the product χN. We predict 5 stable nanophases: layers, cylinders, 3D spherical cells, 4D spherical cells, and 5D spherical cells. In the strong segregation limit, that is for large χN, the order-order transition compositions are determined by the strong segregation theory (SST) in its simplest form. While the predictions of the SST theory are close to the corresponding SCFT extrapolations for d = 4, the extrapolations for d = 5 significantly differ from them. We find that the S5nanophase is stable in a narrow strip between the ordered S4nanophase and the disordered phase. The calculated order-disorder transition lines depend weakly on d, as expected
关键词：diblock copolymer melt; phase diagram; order-disorder transition; order-order transition; field theory
