Application of mean-field theory to the spin casting of polystyrene and poly(methyl methacrylate) blend films from toluene
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Accepted Version
Date
2019
Authors
Mouhamad, Youmna
Mokarian-Tabari, Parvaneh
Jones, Richard A.L.
Geoghegan, Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Published Version
Abstract
The Flory-Huggins free energy of mixing is shown to be appropriate for the analysis of the temporal evolution of a ternary blend of polystyrene and poly (methyl methacrylate) during spin-coating from toluene using an in-situ light scattering technique. For the range of concentrations studied, both the onset of film instability and the observation of a scattering ring occur at the same toluene volume fraction. The success of Flory-Huggins theory indicates that polymer chains retain random walk characteristics during spin-coating. It is also concluded that the thermodynamics of phase separation during film formation is independent of the initial solvent concentration. © 2019 Elsevier Ltd
Description
Keywords
Flory-Huggins theory , Phase separation , Spin-coating
Citation
Mouhamad, Y., Mokarian-Tabari, P., Jones, R. A. and Geoghegan, M. (2019) 'Application of mean-field theory to the spin casting of polystyrene and poly (methyl methacrylate) blend films from toluene', Polymer, 178, 121578 (3pp). https://doi.org/10.1016/j.polymer.2019.121578