A SANS investigation of micelles in mixtures of cetyltrimethylammonium bromide (CTAB)/octyl-β-D-glucopyranoside (C8G1) in water/glycerol solvent

被引：3

作者：

Valiente, M. ^{[1
]}

Cortes, A. B. ^{[1
]}

Gradzielski, M. ^{[2
]}

Noirez, L. ^{[3
]}

Schweins, R. ^{[4
]}

机构：

[1] Univ Alcala, Dpto Quim Fis, E-28871 Madrid, Spain

[2] Tech Univ Berlin, Stranski Lab Phys & Theoret Chem, Inst Chem, D-10623 Berlin, Germany

[3] CEA, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

[4] Inst Max von Laue Paul Langevin ILL, F-38042 Grenoble, France

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2011年 / 375卷 / 1-3期

关键词：

Mixed micelles; SANS; Sugar surfactant; CTAB; Glycerol; ANGLE NEUTRON-SCATTERING; BETA-D-GLUCOSIDE; D-GLUCOPYRANOSIDE; COUNTERION BINDING; NONIONIC MICELLES; ALKYL GLUCOSIDES; PHASE-BEHAVIOR; MIXED MICELLES; SURFACTANTS; WATER;

D O I：

10.1016/j.colsurfa.2010.11.071

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mixtures of a classical cationic surfactant (CTAB) with the sugar surfactant octyl-beta-D-glucopyranoside (C(8)G(1)) have been studied with respect to their aggregation behaviour in aqueous solution as well as in D2O mixtures with glycerol by means of small-angle neutron scattering (SANS). It is observed that the mixtures are governed by weak synergetic interactions and always form mixed micelles that grow with increasing content of CTAB in the mixtures. For the case of the mixed glycerol/water solvent, the size of the mixed micelles decreases with increasing content of glycerol, thereby also changing the shape from prolate to spherical micelles. The observations can be quantitatively interpreted by the expected variation of the head group area of the cationic surfactant that becomes larger clue to the decreasing dielectric constant of the solvent with increasing glycerol content. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：117 / 123

页数：7