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On Modelling Surface Directed Spinodal Decomposition

✍ Scribed by Ian C. Henderson; Nigel Clarke

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
504 KB
Volume
14
Category
Article
ISSN
1022-1344

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✦ Synopsis

Abstract

Summary: 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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πŸ“œ SIMILAR VOLUMES

On spinodal decomposition
On spinodal decomposition
✍ John W Cahn πŸ“‚ Article πŸ“… 1961 πŸ› Elsevier Science βš– 739 KB

The stability of a solid solution to all infinitesimal composition fluctuations is considered, taking surface tension and elastic energy into account. It is found that for infinite isotropic solids, free from imperfections the spinodal marks the limit of metastability to such fluctuations only if th

Further comments on spinodal decompositi
Further comments on spinodal decomposition
✍ W.A Tiller; G.M Pound; J.P Hirth πŸ“‚ Article πŸ“… 1971 πŸ› Elsevier Science βš– 638 KB

## Cahn and Hilliard have recently criticized a paper by us on spinodal decomposition. While some of their criticisms are valid, some are not. Further, their extensive discussion of one incorrect form of a diffusion equation, while pedagogically illuminating in itself, clouds the basic intent of o