Fundamentals of Phase Separation in Polymer Blend Thin Films

  • Sam Coveney

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xvi
  2. Sam Coveney
    Pages 1-6
  3. Sam Coveney
    Pages 141-144
  4. Back Matter
    Pages 145-171

About this book


 This work sheds new light on fundamental aspects of phase separation in polymer-blend thin films. A key feature underlying the theoretical models is the unification of one-dimensional thermodynamic phase equilibria with film evolution phenomena in two- and three dimensions. Initially, an established 'phase portrait' method, useful for visualising and calculating phase equilibria of polymer-blend films, is generalised to systems without convenient simplifying symmetries. Thermodynamic equilibria alone are then used to explain a film roughening mechanism in which laterally coexisting phases can have different depths in order to minimise free energy. The phase portraits are then utilised to demonstrate that simulations of lateral phase separation via a transient wetting layer, which conform very well with experiments, can be satisfactorily explained by 1D phase equilibria and a 'surface bifurcation' mechanism. Lastly, a novel 3D model of coupled phase separation and dewetting is developed, which demonstrates that surface roughening shadows phase separation in thin films.


3D Dewetting Model Dewetting Coupled to Phase Separation Diffusion Simulations of Polymer Films Hamiltonian Phase Portraits Phase Equilibria of Polymer Films Phase Portraits of Polymer Films Phase Separation in Polymer-blend Thin Films Roughening of Polymer-blend Thin Films Thermodynamics of Polymer Films Thin Film Morphology

Authors and affiliations

  • Sam Coveney
    • 1
  1. 1.Department of Physics and AstronomyUniversity of SheffieldSheffieldUnited Kingdom

Bibliographic information