Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2009-03-25
J. Chem. Phys. 131, 034904 (2009)
Physics
Condensed Matter
Statistical Mechanics
32 pages double-spaced preprint including 6 figures; submitted to J Chem Phys
Scientific paper
10.1063/1.3170938
Diblock copolymers blended with homopolymer may self-assemble into spherical, cylindrical or lamellar aggregates. Transitions between these structures may be driven by varying the homopolymer molecular weight or the molecular weight or composition of the diblock. Using self-consistent field theory (SCFT), we reproduce these effects. Our results are compared with X-ray scattering and transmission electron microscopy measurements by Kinning, Winey and Thomas and good agreement is found, although the tendency to form cylindrical and lamellar structures is sometimes overestimated due to our neglect of edge effects due to the finite size of these aggregates. Our results demonstrate that self-consistent field theory can provide detailed information on the self-assembly of isolated block copolymer aggregates.
Buzza D. M. A.
Greenall M. J.
McLeish Thomas C. B.
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