Self-assembly of phosphate fluorosurfactants in carbon dioxide

Keiper, J. S.; Melnichenko, Y. B.; Simhan, R.; Frielinghaus, H.; Bucholz, T. L.; Wignall, G. D.; de Simone, J. M.; Lynn, G. W.; Behles, J. A.

doi:10.1021/la034742s

Journal Article

Self-assembly of phosphate fluorosurfactants in carbon dioxide

Keiper, J. S. ; Behles, J. A. ; Bucholz, T. L. ; Simhan, R. ; de Simone, J. M. ; Lynn, G. W. ; Wignall, G. D. ; Melnichenko, Y. B. ; Frielinghaus, H.FZJ*

2004
ACS Publ. Washington, DC

Langmuir 20, 1065 - 1072 (2004) [10.1021/la034742s]

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Please use a persistent id in citations: http://hdl.handle.net/2128/1119 doi:10.1021/la034742s

Abstract: Anionic phosphodiester surfactants, possessing either two fluorinated chains (F/F) or one hydrocarbon chain and one fluorinated chain (H/F), were synthesized and evaluated for solubility and self-assembly in liquid and supercritical carbon dioxide. Several surfactants, of both F/F and EUF types and having varied counterions, were found to be capable of solubilizing water-in-CO2 (W/C), via the formation of microemulsions, expanding upon the family of phosphate fluorosurfactants already found to stabilize W/C microemulsions. Small-angle neutron scattering was used to directly characterize the microemulsion particles at varied temperatures, pressures, and water loadings, revealing behavior consistent with previous results on W/C microemulsions.

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