Density Functional Theory for Block Copolymer Melts and Blends

Details Density Functional Theory for Block Copolymer Melts and Blends Density Functional Theory for Block Copolymer Melts and Blends

2004-10-15

arxiv.org/abs/cond-mat/0410383v1

Macromolecules, 38 (2005), 196

Physics

Condensed Matter

Soft Condensed Matter

25 pages, 9 figures, will appear in Macromolecules

Scientific paper

10.1021/ma049385m

We derive an expression for the free energy of the blends of block copolymers expressed as a functional of the density distribution of the monomer of each block. The expression is a generalization of the Flory-Huggins-de Gennes theory for homo polymer blends, and also a generalization of the Ohta-Kawasaki theory for the melts of diblock copolymers. The expression can be used for any blends of homopolymers and block copolymers of any topological structure. The expression gives a fast and stable computational method to calculate the micro and macro phase separation of the blends of homopolymers and block copolymers.

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