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On modelling surface directed spinodal decomposition

机译:在建模表面定向旋节线分解上

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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.
机译:对称二元聚合物混合物的Cahn-Hilliard理论用于研究对聚合物共混物的一种组分具有吸引力的表面的影响。我们重新研究了表面或表面附近聚合物共混物动力学的建模方法,以表明只有解决了许多问题,才有可能与先前的模型达成定量协议。我们解决了这样一个问题,即当共混物经历旋节线分解时,在模拟过程中选择的数字长度比例会如何影响表面偏析的精度。最后,我们研究了在淬灭进入两相区域后,平衡对混合物表面或本体的形态是否有任何影响。

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