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Application of mean-field theory to the spin casting of polystyrene and poly(methyl methacrylate) blend films from toluene

Lookup NU author(s): Professor Mark GeogheganORCiD



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


© 2019 Elsevier LtdThe 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.

Publication metadata

Author(s): Mouhamad Y, Mokarian-Tabari P, Jones RAL, Geoghegan M

Publication type: Article

Publication status: Published

Journal: Polymer

Year: 2019

Volume: 178

Print publication date: 12/09/2019

Online publication date: 13/06/2019

Acceptance date: 13/06/2019

Date deposited: 05/08/2021

ISSN (print): 0032-3861

ISSN (electronic): 1873-2291

Publisher: Elsevier Ltd


DOI: 10.1016/j.polymer.2019.121578


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