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Published February 23, 2010 | public
Journal Article

Micelles of Coil−Comb Block Copolymers in Selective Solvents: Competition of Length Scales


We study micelles formed by the coil−comb block copolymer, A-b-(A-g-B), in a B-selective solvent, S. The equilibrium distribution of micelles is obtained according to the thermodynamics of noninteracting micellar solutions, with the free energy of a single isolated micelle calculated using the self-consistent-field theory. Depending on the lengths of the various blocks and the balance of interactions, two types of micelles of different sizes and structures can be observed. This is a manifestation of the competition between two micellar assemblies of the coil−comb block copolymer at different length scales.

Additional Information

© 2010 American Chemical Society. Received September 4, 2009; Revised Manuscript Received January 7, 2010. Publication Date (Web): January 25, 2010. We thank Dr. Li Li for drawing our attention to their experimental results and for helpful discussions. Financial support by the DFG within the Materials World Network (Mu 1674/4) and the National Natural Science Foundation of China (20620120105) is gratefully acknowledged. While this manuscript was under review, the leading author of this article, Dr. Jiafang Wang, passed away unexpectedly of some previously unknown health condition. We (K.K.G., L.J.A., M.M., and Z.G.W.) express our deepest sorrow at the loss of a dear colleague and friend.

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