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

^*Corresponding author for this work

Departamento de Física

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

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.

Original language	English
Pages (from-to)	485-490
Number of pages	6
Journal	Journal of Colloid and Interface Science
Volume	308
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2007.01.012
State	Published - 15 Apr 2007

Bibliographical 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 Tecnología-Mexico (Grant 489100-5-J 32105E).

Keywords

Electrical conductivity
FFEM
Lamellar phase
SAXS
Sponge phase
Surfactant

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10.1016/j.jcis.2007.01.012

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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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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

Abstract

Bibliographical note

Keywords

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