Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

General patterns of the phase behavior of mixtures of H2O, alkanes, alkyl glucosides, and cosurfactants

Sottmann, T ; Kluge, K ; Strey, R ; Reimer, Johan LU and Söderman, Olle LU (2002) In Langmuir 18(8). p.3058-3067
Abstract
We demonstrate how rather hydrophilic surfactants can be used for solubilizing simultaneously water and alkane. The required hydrophilic-lipophilic balance can be achieved by the addition of a medium-chain alcohol, that is, a hydrophobic cosurfactant. Specifically, the phase behavior of the quaternary water-n-octane-n-octyl beta-glucopyranoside (C(8)G(1))-n-octanol (C8E0) system has been investigated. Sugar surfactants, in general, are hydrophilic and, because of the comparatively large number of hydroxyl groups, much less temperature-sensitive than the well-known alkylpolyglycolether (CiEj) surfactants. Therefore, one has to resort to tuning the phase behavior by mixing with a hydrophobic cosurfactant. Once this is done, the phase... (More)
We demonstrate how rather hydrophilic surfactants can be used for solubilizing simultaneously water and alkane. The required hydrophilic-lipophilic balance can be achieved by the addition of a medium-chain alcohol, that is, a hydrophobic cosurfactant. Specifically, the phase behavior of the quaternary water-n-octane-n-octyl beta-glucopyranoside (C(8)G(1))-n-octanol (C8E0) system has been investigated. Sugar surfactants, in general, are hydrophilic and, because of the comparatively large number of hydroxyl groups, much less temperature-sensitive than the well-known alkylpolyglycolether (CiEj) surfactants. Therefore, one has to resort to tuning the phase behavior by mixing with a hydrophobic cosurfactant. Once this is done, the phase behavior mimics that of water-alkane-CiEj microemulsions. To show this, the trajectory of the middle-phase is determined as the phase inversion is passed. A scaling of the trajectory onto the trajectories of conventional temperature-sensitive ternary microemulsions is possible after the composition (i.e. the fraction of n-octanol) of the mixed amphiphilic film is determined from phase behavior and density measurements. (Less)
Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
18
issue
8
pages
3058 - 3067
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000174978000019
  • scopus:0037117929
ISSN
0743-7463
DOI
10.1021/la011665x
language
English
LU publication?
yes
id
985e563c-8fb8-47bf-acde-ca64102fb655 (old id 340208)
date added to LUP
2016-04-01 12:28:33
date last changed
2025-04-04 14:45:39
@article{985e563c-8fb8-47bf-acde-ca64102fb655,
  abstract     = {{We demonstrate how rather hydrophilic surfactants can be used for solubilizing simultaneously water and alkane. The required hydrophilic-lipophilic balance can be achieved by the addition of a medium-chain alcohol, that is, a hydrophobic cosurfactant. Specifically, the phase behavior of the quaternary water-n-octane-n-octyl beta-glucopyranoside (C(8)G(1))-n-octanol (C8E0) system has been investigated. Sugar surfactants, in general, are hydrophilic and, because of the comparatively large number of hydroxyl groups, much less temperature-sensitive than the well-known alkylpolyglycolether (CiEj) surfactants. Therefore, one has to resort to tuning the phase behavior by mixing with a hydrophobic cosurfactant. Once this is done, the phase behavior mimics that of water-alkane-CiEj microemulsions. To show this, the trajectory of the middle-phase is determined as the phase inversion is passed. A scaling of the trajectory onto the trajectories of conventional temperature-sensitive ternary microemulsions is possible after the composition (i.e. the fraction of n-octanol) of the mixed amphiphilic film is determined from phase behavior and density measurements.}},
  author       = {{Sottmann, T and Kluge, K and Strey, R and Reimer, Johan and Söderman, Olle}},
  issn         = {{0743-7463}},
  language     = {{eng}},
  number       = {{8}},
  pages        = {{3058--3067}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Langmuir}},
  title        = {{General patterns of the phase behavior of mixtures of H2O, alkanes, alkyl glucosides, and cosurfactants}},
  url          = {{http://dx.doi.org/10.1021/la011665x}},
  doi          = {{10.1021/la011665x}},
  volume       = {{18}},
  year         = {{2002}},
}