WATER OIL MICROEMULSIONS FROM BINARY IONIC-NONIONIC SURFACTANTS/

Authors
EICKE HF MEIER W HAMMERICH H
Citation
Hf. Eicke et al., WATER OIL MICROEMULSIONS FROM BINARY IONIC-NONIONIC SURFACTANTS/, Colloids and surfaces. A, Physicochemical and engineering aspects, 118(1-2), 1996, pp. 141-148
Citations number
22
Categorie Soggetti
Chemistry Physical
Journal title
Colloids and surfaces. A, Physicochemical and engineering aspects → ACNP
ISSN journal
09277757
Volume
118
Issue
1-2
Year of publication
1996
Pages
141 - 148
Database
ISI
SICI code
0927-7757(1996)118:1-2<141:WOMFBI>2.0.ZU;2-H
Abstract
The addition of a second surfactant to an otherwise thermodynamically stable microemulsion causes interfacial and bulk effects: the combinat ion of AOT and C(12)E(5) supports the formation of planar interfaces ( considering the molecular geometries of the surfactants) which induces a sphere to oblate ellipsoid (approximate to disk) transition ensuing a lamellar liquid crystalline phase. Heats of adsorption of C(12)E(5) (adsorbed on an H2O/AOT/i-C8H18 interface) corroborate the existence of two different interfacial states. The phase transition was inferred from combining conductometric and electro-optic Kerr effect studies.