Phase Diagram of Diblock Copolymer Melt in Dimension d = 5

• Autorzy: Dzięcielski M. , Lewandowski K. , Banaszak M.
• Języki publikacji: EN

Abstrakty

EN

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 chi N. 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 chi, 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 S5 nanophase is stable in a narrow strip between the ordered S4 nanophase and the disordered phase. The calculated orderdisorder transition lines depend weakly on d, as expected.

Słowa kluczowe

EN

diblock copolymer melt; phase diagram; order-disorder transition; order-order transition; field theory

• Wydawca: Institute of Bioorganic Chemistry Scientific Publishers OWN, Polish Academy of Sciences
• Czasopismo: Computational Methods in Science and Technology
• Rocznik: 2011
• Tom: Vol. 17, No. 1-2
• Strony: 17--23
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Dzięcielski M.

autor

Lewandowski K.

autor

Banaszak M.

• Faculty of Physics, A. Mickiewicz University ul. Umultowska 85, 61-614 Poznań, Poland,

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