Self-assembly of phosphate fluorosurfactants in carbon dioxide |
| |
Authors: | Keiper Jason S Behles Jacqueline A Bucholz Tracy L Simhan Ruma DeSimone Joseph M Lynn Gary W Wignall George D Melnichenko Yuri B Frielinghaus Henrich |
| |
Institution: | NSF Center for Environmentally Responsible Solvents and Processes, Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA. |
| |
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-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 scatteringwas used to directly characterize the microemulsion particles at varied temperatures, pressures, and water loadings, revealing behavior consistent with previous results on W/C microemulsions. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|