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Self-assembly in some N-lauroyl-L-glutamate/water systems

Kaneko, D; Olsson, Ulf LU and Sakamoto, K (2002) In Langmuir 18(12). p.4699-4703
Abstract
Acylglutamate is a divalent anionic surfactant whose properties are affected by its degree of neutralization. In this study, we present phase maps for aqueous systems of the potassium (LGP) and triethanolamine salts (LGT) of N-lauroyl L-glutamic acid, at different degrees of neutralization. A cubic phase forming between the isotropic micellar and the hexagonal phase was detected in both LGP/water and LGT/water systems. The stability of this cubic phase was promoted by increasing the degree of neutralization. The lattice parameters of the phase were determined by small-angle X-ray scattering (SAXS). SAYS spectra from samples of this cubic phase could be indexed to the crystallographic space group Pm3n. H-1 NAIR self-diffusion measurements... (More)
Acylglutamate is a divalent anionic surfactant whose properties are affected by its degree of neutralization. In this study, we present phase maps for aqueous systems of the potassium (LGP) and triethanolamine salts (LGT) of N-lauroyl L-glutamic acid, at different degrees of neutralization. A cubic phase forming between the isotropic micellar and the hexagonal phase was detected in both LGP/water and LGT/water systems. The stability of this cubic phase was promoted by increasing the degree of neutralization. The lattice parameters of the phase were determined by small-angle X-ray scattering (SAXS). SAYS spectra from samples of this cubic phase could be indexed to the crystallographic space group Pm3n. H-1 NAIR self-diffusion measurements have also been performed in the isotropic micellar and cubic regions. The self-diffusion coefficient of the surfactant decreases with increasing its concentration. In the cubic phase, the self-diffusion is of the order of 10(-13) m(2) s(-1), demonstrating that the cubic phase consists of discrete micelles. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
18
issue
12
pages
4699 - 4703
publisher
The American Chemical Society
external identifiers
  • wos:000176091900026
  • scopus:0037062821
ISSN
0743-7463
DOI
10.1021/la0117653
language
English
LU publication?
yes
id
258fbb39-0b2e-40d7-a146-252029a9ed8b (old id 335997)
date added to LUP
2007-10-29 14:25:12
date last changed
2017-07-30 03:45:09
@article{258fbb39-0b2e-40d7-a146-252029a9ed8b,
  abstract     = {Acylglutamate is a divalent anionic surfactant whose properties are affected by its degree of neutralization. In this study, we present phase maps for aqueous systems of the potassium (LGP) and triethanolamine salts (LGT) of N-lauroyl L-glutamic acid, at different degrees of neutralization. A cubic phase forming between the isotropic micellar and the hexagonal phase was detected in both LGP/water and LGT/water systems. The stability of this cubic phase was promoted by increasing the degree of neutralization. The lattice parameters of the phase were determined by small-angle X-ray scattering (SAXS). SAYS spectra from samples of this cubic phase could be indexed to the crystallographic space group Pm3n. H-1 NAIR self-diffusion measurements have also been performed in the isotropic micellar and cubic regions. The self-diffusion coefficient of the surfactant decreases with increasing its concentration. In the cubic phase, the self-diffusion is of the order of 10(-13) m(2) s(-1), demonstrating that the cubic phase consists of discrete micelles.},
  author       = {Kaneko, D and Olsson, Ulf and Sakamoto, K},
  issn         = {0743-7463},
  language     = {eng},
  number       = {12},
  pages        = {4699--4703},
  publisher    = {The American Chemical Society},
  series       = {Langmuir},
  title        = {Self-assembly in some N-lauroyl-L-glutamate/water systems},
  url          = {http://dx.doi.org/10.1021/la0117653},
  volume       = {18},
  year         = {2002},
}