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Surfactant diffusion through bicontinuous micellar networks: A case study of the C(9)G(1)/C(10)G(1)/H2O mixed surfactant system

Whiddon, Christy LU ; Reimer, Johan LU and Söderman, Olle LU (2004) In Langmuir 20(6). p.2172-2176
Abstract
Self-diffusion coefficients were obtained by means of NMR diffusometry for differing ratios of n-decyl-beta-D-glucopyranoside (C(10)G(1)) and n-nonyl-beta-D-glueopyranoside (C(9)G(1)) surfactant mixtures, along dilution lines through the micellar region of the ternary C(9)G(1)/C(10)G(1)/H2O phase diagram. Networks of bicontinuous micelles have been suggested to exist throughout the micellar regions of the phase diagram. A phase separation into two coexisting liquid solutions is observed in the dilute, C(10)G(1)-rich regions of the phase diagram. The fact that the dilution curves follow scaling relations pertaining to surfactant diffusion in a network for mixtures rich in C(10)G(1) indicates that the phase separation is due to differences... (More)
Self-diffusion coefficients were obtained by means of NMR diffusometry for differing ratios of n-decyl-beta-D-glucopyranoside (C(10)G(1)) and n-nonyl-beta-D-glueopyranoside (C(9)G(1)) surfactant mixtures, along dilution lines through the micellar region of the ternary C(9)G(1)/C(10)G(1)/H2O phase diagram. Networks of bicontinuous micelles have been suggested to exist throughout the micellar regions of the phase diagram. A phase separation into two coexisting liquid solutions is observed in the dilute, C(10)G(1)-rich regions of the phase diagram. The fact that the dilution curves follow scaling relations pertaining to surfactant diffusion in a network for mixtures rich in C(10)G(1) indicates that the phase separation is due to differences in the networks in different micellar regions of the phase diagram; networks remain largely intact despite dilution down to the phase separation in the C(10)G(1)-rich region, whereas networks with scissions are predicted to exist in the C(9)G(1)-rich regions of the micellar phase. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
20
issue
6
pages
2172 - 2176
publisher
The American Chemical Society
external identifiers
  • pmid:15835667
  • wos:000220159800022
  • scopus:1842530220
ISSN
0743-7463
DOI
10.1021/la035588c
language
English
LU publication?
yes
id
7a244684-4bfb-42e2-b549-7883174ffede (old id 153774)
date added to LUP
2007-07-12 14:24:23
date last changed
2017-01-01 04:47:35
@article{7a244684-4bfb-42e2-b549-7883174ffede,
  abstract     = {Self-diffusion coefficients were obtained by means of NMR diffusometry for differing ratios of n-decyl-beta-D-glucopyranoside (C(10)G(1)) and n-nonyl-beta-D-glueopyranoside (C(9)G(1)) surfactant mixtures, along dilution lines through the micellar region of the ternary C(9)G(1)/C(10)G(1)/H2O phase diagram. Networks of bicontinuous micelles have been suggested to exist throughout the micellar regions of the phase diagram. A phase separation into two coexisting liquid solutions is observed in the dilute, C(10)G(1)-rich regions of the phase diagram. The fact that the dilution curves follow scaling relations pertaining to surfactant diffusion in a network for mixtures rich in C(10)G(1) indicates that the phase separation is due to differences in the networks in different micellar regions of the phase diagram; networks remain largely intact despite dilution down to the phase separation in the C(10)G(1)-rich region, whereas networks with scissions are predicted to exist in the C(9)G(1)-rich regions of the micellar phase.},
  author       = {Whiddon, Christy and Reimer, Johan and Söderman, Olle},
  issn         = {0743-7463},
  language     = {eng},
  number       = {6},
  pages        = {2172--2176},
  publisher    = {The American Chemical Society},
  series       = {Langmuir},
  title        = {Surfactant diffusion through bicontinuous micellar networks: A case study of the C(9)G(1)/C(10)G(1)/H2O mixed surfactant system},
  url          = {http://dx.doi.org/10.1021/la035588c},
  volume       = {20},
  year         = {2004},
}