Journal
MACROMOLECULAR THEORY AND SIMULATIONS
Volume 14, Issue 7, Pages 435-443Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mats.200500027
Keywords
morphology; phase separation; spinodal decomposition; surfaces
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Cahn-Hilliard theory for symmetric binary polymer mixtures is used to study the influence of a surface which is attractive to one component of the polymer blend. We revisit modelling approaches to the dynamics of a polymer blend at or near a surface to show that quantitative agreement with previous models is only possible if a number of issues are resolved. We address the issue of how the numerical length scales chosen during the simulation affect the accuracy of the magnitude of surface segregation when a blend is undergoing spinodal decomposition. Finally we investigate whether equilibration has any effect on the morphology of the blend at the surface or in the bulk after a quench into the two-phase region has occurred.
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