TY - JOUR
T1 - Self-Assembly of Phosphate Fluorosurfactants in Carbon Dioxide
AU - Keipeir, Jason S.
AU - Behles, Jacqueline A.
AU - Bucholz, Tracy L.
AU - Simhan, Ruma
AU - DeSimone, Joseph M.
AU - Lynn, Gary W.
AU - Wignall, George D.
AU - Melnichenko, Yuri B.
AU - Frielinghaus, Henrich
PY - 2004/2/17
Y1 - 2004/2/17
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=1442332789&partnerID=8YFLogxK
U2 - 10.1021/la034742s
DO - 10.1021/la034742s
M3 - Article
AN - SCOPUS:1442332789
SN - 0743-7463
VL - 20
SP - 1065
EP - 1072
JO - Langmuir
JF - Langmuir
IS - 4
ER -