Supercritical fluid swelling of liquid crystal films

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Supercritical fluid swelling of liquid crystal films

O'Callaghan, John M.; Copley, Mark P.; Hanrahan, John P.; Morris, Michael A.; Steytler, David C.; Heenan, Richard K.; Staudt, Reiner; Holmes, Justin D.
Date: 2008-05-30
Copyright: © 2008 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/abs/10.1021/la800073t
Related: https://pubs.acs.org/doi/abs/10.1021/la800073t
Citation: O’Callaghan, J. M., Copley, M. P., Hanrahan, J. P., Morris, M. A., Steytler, D. C., Heenan, R. K., Staudt, R. and Holmes, J. D. (2008) 'Supercritical Fluid Swelling of Liquid Crystal Films', Langmuir, 24(13), pp. 6959-6964. doi: 10.1021/la800073t
Published Version: 10.1021/la800073t

Abstract:

The influence of liquid and supercritical carbon dioxide and liquid propane on the structural properties of both ionic and nonionic surfactant-based liquid crystal films is discussed in this paper. Swelling of the films, measured using in situ small-angle neutron scattering (SANS), was found to be dependent on the solubility of the propane/carbon dioxide in the micelles of the respective liquid crystals. Additionally, under certain pressure conditions the structural properties of some of the films were observed to change, ultimately leading to a loss of order in the micellar arrays of the liquid crystals.

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