Composition of mixed hydrocarbon and fluorocarbon surfactant adsorbed layers at mica-solution interfaces

被引：7

作者：

Davey, TW

Warr, GG ^{[1
]}

Asakawa, T

机构：

[1] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[2] Kanazawa Univ, Fac Engn, Dept Chem & Chem Engn, Kanazawa, Ishikawa 920, Japan

来源：

LANGMUIR | 2003年 / 19卷 / 13期

关键词：

D O I：

10.1021/la034150+

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The compositions of the adsorbed aggregates at the mica-solution interface have been directly determined for mixtures of pyridinium. chloride hydrocarbon and fluorocarbon surfactants by solution depletion measurements, including direct determination of the adsorbed layer composition for partially miscible surfactants. The measured adsorbed aggregate compositions are compared with predictions for bulk micelles using the group contribution method and regular solution theory. For fully miscible surfactants, there is good agreement between the models and experimental results. The group contribution method successfully predicts the existence of a miscibility gap for some mixtures, but adsorption experiments reveal some unusual features; the adsorbed layer consists of only one of the two coexisting micelle compositions, and its composition differs from that predicted. This effect is attributed to the substrate.

引用

收藏

页码：5266 / 5272

页数：7

相关论文

共 31 条

[11] SYNERGISM IN BINARY-MIXTURES OF SURFACTANTS .1. THEORETICAL-ANALYSIS [J].

HUA, XY ;

ROSEN, MJ .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1982, 90 (01) :212-219

[12] Adsorption behavior of cationic and nonionic surfactant mixtures at the alumina-water interface [J].

Huang, L ;

Maltesh, C ;

Somasundaran, P .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1996, 177 (01) :222-228

[13] Phase separation in hybrid Langmuir-Blodgett films of perfluorinated and hydrogenated amphiphiles. Examination by atomic force microscopy [J].

Imae, T ;

Takeshita, T ;

Kato, M .

LANGMUIR, 2000, 16 (02) :612-621

[14] Demixing of fluorinated and hydrogenated surfactants into distinct aggregates and into distinct regions within aggregates.: A combined NMR, fluorescence quenching, and cryo-TEM study [J].

Kadi, M ;

Hansson, P ;

Almgren, M ;

Furó, I .

LANGMUIR, 2002, 18 (24) :9243-9249

[15] Organized structure of lithium perfluorooctanesulfonate at the graphite-solution interface [J].

Lamont, R ;

Ducker, W .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1997, 191 (02) :303-311

[16] DIRECT VISUALIZATION OF SURFACTANT HEMIMICELLES BY FORCE MICROSCOPY OF THE ELECTRICAL DOUBLE-LAYER [J].

MANNE, S ;

CLEVELAND, JP ;

GAUB, HE ;

STUCKY, GD ;

HANSMA, PK .

LANGMUIR, 1994, 10 (12) :4409-4413

[17] NONIDEALITY OF MIXING OF MICELLES OF FLUOROCARBON AND HYDROCARBON SURFACTANTS AND EVIDENCE OF PARTIAL MISCIBILITY FROM DIFFERENTIAL CONDUCTANCE DATA [J].

MUKERJEE, P ;

YANG, AYS .

JOURNAL OF PHYSICAL CHEMISTRY, 1976, 80 (12) :1388-1390

[18] FORCE MICROSCOPY STUDY OF FRICTION AND ELASTIC COMPLIANCE OF PHASE-SEPARATED ORGANIC THIN-FILMS [J].

OVERNEY, RM ;

MEYER, E ;

FROMMER, J ;

GUNTHERODT, HJ ;

FUJIHIRA, M ;

TAKANO, H ;

GOTOH, Y .

LANGMUIR, 1994, 10 (04) :1281-1286

[19] Self-assembly structures of nonionic surfactants at graphite/solution interfaces [J].

Patrick, HN ;

Warr, GG ;

Manne, S ;

Aksay, IA .

LANGMUIR, 1997, 13 (16) :4349-4356

[20] Surface micellization patterns of quaternary ammonium surfactants on mica [J].

Patrick, HN ;

Warr, GG ;

Manne, S ;

Aksay, IA .

LANGMUIR, 1999, 15 (05) :1685-1692

← 1 2 3 4 →