| 초록 |
We theoretically consider the micellization of various architectures of AB block copolymers including di-, tri-, cyclic- and starblock copolymer by using a mean field theory. Assuming that the hydrophilic A-monomers forming the corona of micelles are strongly segregated from the hydrophobic B-monomers in the core of micelles, the free energy of micellar state is formulated for various architectures. Minimizing the free energy with respect to variables describing micelles, various micellar properties such as the cmc (critical micelle concentration) and the mean aggregation number are predicted as a function of architectural parameters and compared to the results obtained from Brownian dynamics simulations. From these theoretical and numerical calculations, it is found that the diblock copolymers have cmcs at least approximately one order of magnitude lower than the equivalent block copolymers of other architectures.
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