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Micellar growth in salt-free aqueous solutions of a Gemini cationic surfactant: Evidence for a multimodal population of aggregates

Identifieur interne : 000026 ( PascalFrancis/Corpus ); précédent : 000025; suivant : 000027

Micellar growth in salt-free aqueous solutions of a Gemini cationic surfactant: Evidence for a multimodal population of aggregates

Auteurs : V. Weber ; T. Narayanan ; E. Mendes ; F. Schosseler

Source :

RBID : Pascal:03-0152456

Descripteurs français

English descriptors

Abstract

We study salt-free aqueous solutions of a cationic gemini surfactant in the concentration range between the critical micellar concentration and the onset of the semidilute regime by combining SAXS, static and dynamic light-scattering techniques. The results give strong evidence for the coexistence of small, intermediate, and very large micellar sizes in the whole range of concentration. The qualitative evolution of the different micellar populations could be followed as a function of concentration and is found in good qualitative agreement with recent cryo-TEM observations on the same system by Bernheim-Grosswasser et al.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A02 01      @0 LANGD5
A03   1    @0 Langmuir
A05       @2 19
A06       @2 4
A08 01  1  ENG  @1 Micellar growth in salt-free aqueous solutions of a Gemini cationic surfactant: Evidence for a multimodal population of aggregates
A11 01  1    @1 WEBER (V.)
A11 02  1    @1 NARAYANAN (T.)
A11 03  1    @1 MENDES (E.)
A11 04  1    @1 SCHOSSELER (F.)
A14 01      @1 Lab. de Dynamique Fluides Complexes UMR 7506 (CNRS-ULP) @2 67084 Strasbourg Cedex @3 FRA @Z 1 aut.
A20       @1 992-1000
A21       @1 2003
A23 01      @0 ENG
A43 01      @1 INIST @2 20642
A44       @0 A100
A45       @0 49 Refs.
A47 01  1    @0 03-0152456
A60       @1 P
A61       @0 A
A64 01  1    @0 Langmuir
A66 01      @0 USA
C01 01    ENG  @0 We study salt-free aqueous solutions of a cationic gemini surfactant in the concentration range between the critical micellar concentration and the onset of the semidilute regime by combining SAXS, static and dynamic light-scattering techniques. The results give strong evidence for the coexistence of small, intermediate, and very large micellar sizes in the whole range of concentration. The qualitative evolution of the different micellar populations could be followed as a function of concentration and is found in good qualitative agreement with recent cryo-TEM observations on the same system by Bernheim-Grosswasser et al.
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C02 06  3    @0 001B40B
C03 01  1  ENG  @0 Gemini cationic surfactant @4 INC
C03 02  1  ENG  @0 Micellar growth @4 INC
C03 03  1  ENG  @0 Small angle x ray spectroscopy @4 INC
C03 04  1  FRE  @0 Théorie
C03 04  1  ENG  @0 Theory
C03 05  1  FRE  @0 Concentration critique micellaire
C03 05  1  ENG  @0 Critical micelle concentration
C03 06  1  FRE  @0 Croissance matériau
C03 06  1  ENG  @0 Growth (materials)
C03 07  1  FRE  @0 Solution
C03 07  1  ENG  @0 Solutions
C03 08  1  FRE  @0 Ion positif
C03 08  1  ENG  @0 Positive ions
C03 09  1  FRE  @0 Spectrométrie RX
C03 09  1  ENG  @0 X ray spectroscopy
C03 10  1  FRE  @0 Diffusion lumière
C03 10  1  ENG  @0 Light scattering
C03 11  1  FRE  @0 Microscopie électronique transmission
C03 11  1  ENG  @0 Transmission electron microscopy
C03 12  1  FRE  @0 Modèle mathématique
C03 12  1  ENG  @0 Mathematical models
C03 13  1  FRE  @0 Agent surface @3 P
C03 13  1  ENG  @0 Surface active agents @3 P
C03 14  1  FRE  @0 Expérience
C03 14  1  ENG  @0 Experiments
N21       @1 090

Format Inist (serveur)

NO : PASCAL 03-0152456 EI
ET : Micellar growth in salt-free aqueous solutions of a Gemini cationic surfactant: Evidence for a multimodal population of aggregates
AU : WEBER (V.); NARAYANAN (T.); MENDES (E.); SCHOSSELER (F.)
AF : Lab. de Dynamique Fluides Complexes UMR 7506 (CNRS-ULP)/67084 Strasbourg Cedex/France (1 aut.)
DT : Publication en série; Niveau analytique
SO : Langmuir; ISSN 0743-7463; Coden LANGD5; Etats-Unis; Da. 2003; Vol. 19; No. 4; Pp. 992-1000; Bibl. 49 Refs.
LA : Anglais
EA : We study salt-free aqueous solutions of a cationic gemini surfactant in the concentration range between the critical micellar concentration and the onset of the semidilute regime by combining SAXS, static and dynamic light-scattering techniques. The results give strong evidence for the coexistence of small, intermediate, and very large micellar sizes in the whole range of concentration. The qualitative evolution of the different micellar populations could be followed as a function of concentration and is found in good qualitative agreement with recent cryo-TEM observations on the same system by Bernheim-Grosswasser et al.
CC : 001D08A01; 001C01J; 001D07; 001C01; 001D05A; 001B40B
FD : Théorie; Concentration critique micellaire; Croissance matériau; Solution; Ion positif; Spectrométrie RX; Diffusion lumière; Microscopie électronique transmission; Modèle mathématique; Agent surface; Expérience
ED : Gemini cationic surfactant; Micellar growth; Small angle x ray spectroscopy; Theory; Critical micelle concentration; Growth (materials); Solutions; Positive ions; X ray spectroscopy; Light scattering; Transmission electron microscopy; Mathematical models; Surface active agents; Experiments
LO : INIST-20642
ID : 03-0152456

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Pascal:03-0152456

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