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Quantitative Relationships Between Cooperative Motion, Emergent Elasticity and Free Volume in Model Polymer Glass-Forming Polymer Materials

Published

Author(s)

Jack F. Douglas, Beatriz Betancourt, Paul Hanakata, Francis W. Starr

Abstract

The study of glass-formation is largely framed by semi-empirical models that emphasize the importance of emergent material elasticity, progressively growing cooperative motion accompanying the drop of cofigurational entropy or the vanishing of accessible free volume available for molecular motion in cooled liquids. We investigate the extent to which these descriptions are related through computations on a model coarse-grained polymer melt with and without nanoparticle additives and for supported polymer films with smooth and rough surfaces, allowing the consideration of a large variation of the fragility of glass formation.
Citation
Proceedings of the National Academy of Sciences

Keywords

entropy theory of glass formation, free volume theory, shoving model, strings, Debye-Waller factor

Citation

Douglas, J. , Betancourt, B. , , P. and Starr, F. (2015), Quantitative Relationships Between Cooperative Motion, Emergent Elasticity and Free Volume in Model Polymer Glass-Forming Polymer Materials, Proceedings of the National Academy of Sciences (Accessed April 16, 2024)
Created March 10, 2015, Updated January 27, 2020