Self-Assembly of Phosphate Fluorosurfactants in Carbon Dioxide

Jason S. Keipeir, Jacqueline A. Behles, Tracy L. Bucholz, Ruma Simhan, Joseph M. DeSimone, Gary W. Lynn, George D. Wignall, Yuri B. Melnichenko, Henrich Frielinghaus

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

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 H/F types and having varied counterions, were found to be capable of solubilizing water-in-CO 2 (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.

Original languageEnglish
Pages (from-to)1065-1072
Number of pages8
JournalLangmuir
Volume20
Issue number4
DOIs
StatePublished - Feb 17 2004

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