ArticleChemphyschem : a European journal of chemical physics and physical chemistry2025
Modeling Thermodynamic Behavior of Ultrathin Films: Comparison with Experiments.
Article in Chemphyschem : a European journal of chemical physics and physical chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This work aims to model the thermodynamic behavior of ultrathin polymer films. A mean-field thermodynamic model, originally developed for 3D polymers and parametrized by fitting the 3D pressure-volume-temperature data, is adapted to the 2D case. Remarkably, without any adjustable parameters, the 2D model successfully describes the experimental pressure-area isotherms for a wide range of polymers (polydimethylsiloxane (PDMS), polymethylmethacrylate (PMMA), polytetrahydrofuran, and polybutadiene) with varying hydrophobic-hydrophilic balances. Furthermore, it allows for the prediction of ultrathin film thickness, yielding values consistent with available experimental data for different polymers (PDMS, PMMA, and polybutadiene, especially). This 2D model remains applicable across different phases of the phase diagram, provided the film is in a dense state.
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