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Polymers --- Sustainable engineering. --- Separation. --- Engineering sustainability --- Green engineering --- Engineering --- Green technology --- Environmental engineering --- Fractionation of polymers --- Polymer fractionation --- Fractionation
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Polymers --- Sustainable engineering. --- Separation. --- Fractionation of polymers --- Polymer fractionation --- Engineering sustainability --- Green engineering --- Engineering --- Green technology --- Environmental engineering --- Fractionation
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Polymers --- Phase rule and equilibrium. --- Chemistry, Physical and theoretical --- Critical phenomena (Physics) --- Equilibrium --- Chemical equilibrium --- Chemical systems --- Critical point --- Fractionation of polymers --- Polymer fractionation --- Polymere --- Polymeride --- Polymers and polymerization --- Macromolecules --- Solubility. --- Mixing. --- Separation. --- Fractionation
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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.
Physics. --- Phase Transitions and Multiphase Systems. --- Thermodynamics. --- Surfaces and Interfaces, Thin Films. --- Polymer Sciences. --- Surface and Interface Science, Thin Films. --- Polymers. --- Surfaces (Physics). --- Physique --- Polymères --- Thermodynamique --- Surfaces (Physique) --- Physics --- Physical Sciences & Mathematics --- Atomic Physics --- Polymers --- Separation. --- Fractionation of polymers --- Polymer fractionation --- Fractionation --- Phase transitions (Statistical physics). --- Interfaces (Physical sciences). --- Thin films. --- Materials --- Surfaces. --- Polymere --- Polymeride --- Polymers and polymerization --- Macromolecules --- Surface chemistry --- Surfaces (Technology) --- Chemistry, Physical and theoretical --- Dynamics --- Mechanics --- Heat --- Heat-engines --- Quantum theory --- Materials—Surfaces. --- Polymers . --- Surfaces (Physics) --- Films, Thin --- Solid film --- Solid state electronics --- Solids --- Coatings --- Thick films --- Phase changes (Statistical physics) --- Phase transitions (Statistical physics) --- Phase rule and equilibrium --- Statistical physics
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Polymer networks --- Polymers --- Réseaux polymères --- Separation --- Organic Chemistry --- Chemistry --- Physical Sciences & Mathematics --- Polymer networks. --- Separation. --- Fractionation of polymers --- Polymer fractionation --- Interpenetrating polymer networks --- IPN (Polymers) --- Networks, Polymer --- Fractionation --- Chemistry. --- Polymers. --- Amorphous substances. --- Complex fluids. --- Materials --- Thin films. --- Polymer Sciences. --- Surfaces and Interfaces, Thin Films. --- Soft and Granular Matter, Complex Fluids and Microfluidics. --- Surfaces. --- Crosslinked polymers --- Surfaces (Physics). --- Physics --- Surface chemistry --- Surfaces (Technology) --- Polymere --- Polymeride --- Polymers and polymerization --- Macromolecules --- Polymers . --- Materials—Surfaces. --- Complex liquids --- Fluids, Complex --- Amorphous substances --- Liquids --- Soft condensed matter --- Films, Thin --- Solid film --- Solid state electronics --- Solids --- Coatings --- Thick films
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