Supercritical fluid swelling of liquid crystal films

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O'Callaghan, John M.
Copley, Mark P.
Hanrahan, John P.
Morris, Michael A.
Steytler, David C.
Heenan, Richard K.
Staudt, Reiner
Holmes, Justin D.
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American Chemical Society, ACS
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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.
Carbon dioxide , Carbon films , Colloids , Crystallography , Crystals , Effluent treatment , Industrial waste treatment , Light sources , Liquid crystals , Liquid films , Neutron scattering , Nonionic surfactants , Photoresists , Plastic films , Powders , Propane , Supercritical fluid extraction , Supercritical fluids , Surface active agents , Ionization of liquids
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
© 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