Size Effects in the Shape of Intrinsic Coexistence Profile

Size Effects in the Shape of Intrinsic Coexistence Profile 

The coexistence curve of polymer blends is nowadays determined with a novel technique (see Sect. 2.2.1) tracing at different temperatures the composition 

We were not able to calculate our observed profiles [92] in a priori fashion. Recently, Eggleton [222] performed the numerical calculations for a very similar model system with both asymmetric surfaces exerting fields (and related energy contributions N1/2/a fsL,R) ten times stronger than reported in [92]. He varied the 

Recently, Binder et al. [118] considered the Ising lattice of a binary atomic (N=l) mixture confined in a very thin film by antisymmetric surfaces each attracting a different component. It was shown that the segregation of each blend component to opposite surfaces may create antisymmetric (with respect to the center of the film z=D/2) profiles ( (z) even for temperatures above critical point T TC, where flat profiles are expected when external interfaces are neglected. Such antisymmetric profiles would not be distinguished in experiments (with limited depth resolution) from coexisting profiles described by a hyperbolic tangent. 

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