title: Hybrid CO2-philic surfactants with low fluorine content.
abstract: The relationships between molecular architecture, aggregation, and interfacial activity of a new class of CO(2)-philic hybrid surfactants are investigated. The new hybrid surfactant CF2/AOT4 [sodium (4H,4H,5H,5H,5H-pentafluoropentyl-3,5,5-trimethyl-1-hexyl)-2-sulfosuccinate] was synthesized, having one hydrocarbon chain and one separate fluorocarbon chain. This hybrid H-F chain structure strikes a fine balance of properties, on one hand minimizing the fluorine content, while on the other maintaining a sufficient level of CO(2)-philicity. The surfactant has been investigated by a range of techniques including high-pressure phase behavior, UV-visible spectroscopy, small-angle neutron scattering (SANS), and air-water (a/w) surface tension measurements. The results advance the understanding of structure-function relationships for generating CO(2)-philic surfactants and are therefore beneficial for expanding applications of CO(2) to realize its potential using the most economic and efficient surfactants.
authors.affiliation: School of ChemistryUniversity of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
authors.forename: Azmi
authors.initials: A
authors.lastname: Mohamed
authors.forename: Masanobu
authors.initials: M
authors.lastname: Sagisaka
authors.forename: Martin
authors.initials: M
authors.lastname: Hollamby
authors.forename: Sarah E
authors.initials: SE
authors.lastname: Rogers
authors.forename: Richard K
authors.initials: RK
authors.lastname: Heenan
authors.forename: Robert
authors.initials: R
authors.lastname: Dyer
authors.forename: Julian
authors.initials: J
authors.lastname: Eastoe