Equilibrium Morphology of Block Copolymer Melts

The field theoretical approach for block copolymer melts developed in our earlier work (Kawasaki, K.; et al. Macromolecules 1988, 21, 2972) was recast in such a way as to avoid power series expansion in the concentration variable. The general scaling behavior was found, which naturally gives rise to the wellknown two-thirds power law of the domain size. The theory is related to other approaches by Helfand and co-workers and by Semenov. Numerical consequences of the theory are also presented that clearly demonstrate approach to the correct asymptotic behavior.