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Microstructure of alkyl glucoside microemulsions: Control of curvature by interfacial composition

Reimer, Johan LU ; Söderman, Olle LU ; Sottman, T; Kluge, K and Strey, R (2003) In Langmuir 19(26). p.10692-10702
Abstract
The phase behavior of water/n-octane/n-octyl-beta-D-glucopyranoside (C(8)G(1))/1-octanol (C8E0) permits formulating temperature-insensitive microemulsions spanning the whole water-oil composition range. The types of microstructures formed along the trajectory of the middle-phase microemulsion are examined by NMR diffusometry, yielding the respective diffusion coefficients of all the components. The diffusion experiments provide clear evidence of the transition from oil-in-water to water-in-oil microemulsions via bicontinuous structures in a remarkably large range around phase inversion. Small-angle neutron scattering (SANS) along the same path confirm the picture. Furthermore, SANS curves on the absolute scale permit extracting the... (More)
The phase behavior of water/n-octane/n-octyl-beta-D-glucopyranoside (C(8)G(1))/1-octanol (C8E0) permits formulating temperature-insensitive microemulsions spanning the whole water-oil composition range. The types of microstructures formed along the trajectory of the middle-phase microemulsion are examined by NMR diffusometry, yielding the respective diffusion coefficients of all the components. The diffusion experiments provide clear evidence of the transition from oil-in-water to water-in-oil microemulsions via bicontinuous structures in a remarkably large range around phase inversion. Small-angle neutron scattering (SANS) along the same path confirm the picture. Furthermore, SANS curves on the absolute scale permit extracting the specific internal interface in the microemulsion as it passes through phase inversion. When the composition of the internal interface is known, the mean area per surfactant molecule is determined. It is found that as the interfacial film becomes increasingly ri

h in C8E0, that is, the phase inversion is passed, the mean area per surfactant molecule C(8)G(1) decreases along the same progression. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
19
issue
26
pages
10692 - 10702
publisher
The American Chemical Society
external identifiers
  • wos:000187507500012
  • scopus:0346936069
ISSN
0743-7463
DOI
10.1021/la034847v
language
English
LU publication?
yes
id
5487c52f-1159-42ba-861b-a69e52a10ab6 (old id 122171)
date added to LUP
2007-07-12 10:42:37
date last changed
2018-01-07 05:57:49
@article{5487c52f-1159-42ba-861b-a69e52a10ab6,
  abstract     = {The phase behavior of water/n-octane/n-octyl-beta-D-glucopyranoside (C(8)G(1))/1-octanol (C8E0) permits formulating temperature-insensitive microemulsions spanning the whole water-oil composition range. The types of microstructures formed along the trajectory of the middle-phase microemulsion are examined by NMR diffusometry, yielding the respective diffusion coefficients of all the components. The diffusion experiments provide clear evidence of the transition from oil-in-water to water-in-oil microemulsions via bicontinuous structures in a remarkably large range around phase inversion. Small-angle neutron scattering (SANS) along the same path confirm the picture. Furthermore, SANS curves on the absolute scale permit extracting the specific internal interface in the microemulsion as it passes through phase inversion. When the composition of the internal interface is known, the mean area per surfactant molecule is determined. It is found that as the interfacial film becomes increasingly ri<br/><br>
h in C8E0, that is, the phase inversion is passed, the mean area per surfactant molecule C(8)G(1) decreases along the same progression.},
  author       = {Reimer, Johan and Söderman, Olle and Sottman, T and Kluge, K and Strey, R},
  issn         = {0743-7463},
  language     = {eng},
  number       = {26},
  pages        = {10692--10702},
  publisher    = {The American Chemical Society},
  series       = {Langmuir},
  title        = {Microstructure of alkyl glucoside microemulsions: Control of curvature by interfacial composition},
  url          = {http://dx.doi.org/10.1021/la034847v},
  volume       = {19},
  year         = {2003},
}