6
О 2 4 6 8 10 12
z∕σ
z∕σ
Figure 5.9: Symmetric segment density profiles of the A block (solid black curve) and
B block (dashed black curve) of the copolymer for (a) H = 9σ, (b) H = 10.6σ, (c) H =
13σ, and (d) H = 15σ. For the diblock copolymer, N = 8 and e∕kT = 0.289. For surfaces,
tw∕kT = 0.3.
Os — Os = ∏
û bmin, anti—symmetric min,symmetric
For the earlier case with ew∕kT = 0.1, = 0.2101 and ^minfanti-symmetric ~
^min,symmetric = 0∙2048. Hence, calculating just the free energies of symmetric phases
137