Physics – Condensed Matter – Statistical Mechanics
Scientific paper
1999-06-08
Physics
Condensed Matter
Statistical Mechanics
to appear in J.Chem.Phys
Scientific paper
10.1063/1.479823
The structure of lamellar phases of symmetric $AB$ diblock copolymers in a thin film is investigated. We quantitatively compare the composition profiles and profiles of individual segments in self-consistent field calculations with Monte Carlo simulations in the bond fluctuation model for chain length N=32 and $\chi N=30$. Three film thicknesses are investigated, corresponding to parallel oriented lamellae with 2 and 4 interfaces and a perpendicular oriented morphology. Taking account of capillary waves, we find good quantitative agreement between the Monte Carlo simulations and the self-consistent field calculations. However, the fluctuations of the local interfacial position are strongly suppressed by confinement and mutual interactions between lamellae.
Binder Kurt
Geisinger Thorsten
Mueller Marcus
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