The sponge phase of a mixed surfactant system

A. Maldonado; R. Ober; T. Gulik-Krzywicki; W. Urbach; D. Langevin

doi:10.1016/j.jcis.2007.01.012

The sponge phase of a mixed surfactant system

A. Maldonado^*, R. Ober, T. Gulik-Krzywicki, W. Urbach, D. Langevin

^*Autor correspondiente de este trabajo

Departamento de Física

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

18 Citas (Scopus)

Resumen

We study the sponge phase of the mixed non-ionic/ionic surfactant system C₁₄DMAO-TTAB-hexanol-brine. Our aim is to determine if this phase exists in this mixed system and if it preserves or changes its structure when the relative amount of the charged surfactant is increased in the mixture. SAXS, FFEM, and conductivity results show that for the same bilayer volume fraction the sponge phase preserves its global structure. We propose a method to determine the geometrical obstruction factor from electrical conductivity measurements in ionic sponge phases. Analysis of lamellar phases in the same system shows that the bilayer thickness increases when the ionic surfactant concentration is increased.

Idioma original	Inglés
Páginas (desde-hasta)	485-490
Número de páginas	6
Publicación	Journal of Colloid and Interface Science
Volumen	308
N.º	2
DOI	https://doi.org/10.1016/j.jcis.2007.01.012
Estado	Publicada - 15 abr. 2007

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title = "The sponge phase of a mixed surfactant system",

abstract = "We study the sponge phase of the mixed non-ionic/ionic surfactant system C14DMAO-TTAB-hexanol-brine. Our aim is to determine if this phase exists in this mixed system and if it preserves or changes its structure when the relative amount of the charged surfactant is increased in the mixture. SAXS, FFEM, and conductivity results show that for the same bilayer volume fraction the sponge phase preserves its global structure. We propose a method to determine the geometrical obstruction factor from electrical conductivity measurements in ionic sponge phases. Analysis of lamellar phases in the same system shows that the bilayer thickness increases when the ionic surfactant concentration is increased.",

keywords = "Electrical conductivity, FFEM, Lamellar phase, SAXS, Sponge phase, Surfactant",

author = "A. Maldonado and R. Ober and T. Gulik-Krzywicki and W. Urbach and D. Langevin",

note = "Funding Information: The authors thank the financial support from ECOS and ANUIES (action MOOP03). A.M. thanks financial support from the Consejo Nacional de Ciencia y Tecnolog{\'i}a-Mexico (Grant 489100-5-J 32105E).",

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T1 - The sponge phase of a mixed surfactant system

AU - Maldonado, A.

AU - Ober, R.

AU - Gulik-Krzywicki, T.

AU - Urbach, W.

AU - Langevin, D.

N1 - Funding Information: The authors thank the financial support from ECOS and ANUIES (action MOOP03). A.M. thanks financial support from the Consejo Nacional de Ciencia y Tecnología-Mexico (Grant 489100-5-J 32105E).

PY - 2007/4/15

Y1 - 2007/4/15

N2 - We study the sponge phase of the mixed non-ionic/ionic surfactant system C14DMAO-TTAB-hexanol-brine. Our aim is to determine if this phase exists in this mixed system and if it preserves or changes its structure when the relative amount of the charged surfactant is increased in the mixture. SAXS, FFEM, and conductivity results show that for the same bilayer volume fraction the sponge phase preserves its global structure. We propose a method to determine the geometrical obstruction factor from electrical conductivity measurements in ionic sponge phases. Analysis of lamellar phases in the same system shows that the bilayer thickness increases when the ionic surfactant concentration is increased.

AB - We study the sponge phase of the mixed non-ionic/ionic surfactant system C14DMAO-TTAB-hexanol-brine. Our aim is to determine if this phase exists in this mixed system and if it preserves or changes its structure when the relative amount of the charged surfactant is increased in the mixture. SAXS, FFEM, and conductivity results show that for the same bilayer volume fraction the sponge phase preserves its global structure. We propose a method to determine the geometrical obstruction factor from electrical conductivity measurements in ionic sponge phases. Analysis of lamellar phases in the same system shows that the bilayer thickness increases when the ionic surfactant concentration is increased.

KW - Electrical conductivity

KW - FFEM

KW - Lamellar phase

KW - SAXS

KW - Sponge phase

KW - Surfactant

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U2 - 10.1016/j.jcis.2007.01.012

DO - 10.1016/j.jcis.2007.01.012

M3 - Artículo

C2 - 17266977

SN - 0021-9797

VL - 308

SP - 485

EP - 490

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

IS - 2

ER -

The sponge phase of a mixed surfactant system

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