Water in carbon dioxide macroemulsions and miniemulsions with a hydrocarbon surfactant

Authors
Johnston, KP Cho, DM DaRocha, SRP Psathas, PA Ryoo, W Webber, SE Eastoe, J Dupont, A Steytler, DC
Citation
Kp. Johnston et al., Water in carbon dioxide macroemulsions and miniemulsions with a hydrocarbon surfactant, LANGMUIR, 17(23), 2001, pp. 7191-7193
Citations number
21
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LANGMUIR
ISSN journal
07437463 → ACNP
Volume
17
Issue
23
Year of publication
2001
Pages
7191 - 7193
Database
ISI
SICI code
0743-7463(20011113)17:23<7191:WICDMA>2.0.ZU;2-0
Abstract
Dilute water in carbon dioxide miniemulsions and macroemulsions are formed with a hydrocarbon surfactant, sodium bis(3,5,5-trimethyl-1-hexyl)sulfosucc inate. The emulsion droplets do not appear to flocculate at 30-60 degreesC and 29 MPa indicating that solvation of the tails by CO2 is sufficient to s creen the interdroplet attractive interactions. The solvation of the tails is enhanced by the low cohesive energy density methyl groups that interact more favorably with CO2 than methylene groups.