Refined method of assessment of parameters of micellization of surfactants and percolation of w/o microemulsions

被引：97

作者：

Hait, SK

Moulik, SP ^{[1
]}

Palepu, R

机构：

[1] Jadavpur Univ, Dept Chem, Ctr Surface Sci, Kolkata 700032, W Bengal, India

[2] St Francis Xavier Univ, Dept Chem, Antigonish, NS B2G 2W5, Canada

来源：

LANGMUIR | 2002年 / 18卷 / 07期

关键词：

D O I：

10.1021/la0110794

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The course of the differential heats of dilution of a surfactant measured in an isothermal titration microcalorimeter is normally of sigmoidal type. The course of percolation of conductance of a water in oil microemulsion induced by either temperature or the water content of the system is also of sigmoidal nature. Derivation of the critical micellar concentration and the enthalpy of micellization (DeltaH(m)) in the former has been demonstrated to be conveniently obtained by employing the Sigmoidal-Boltzmann equation (SBE). The SBE has been shown also to be conveniently applicable for accurate determination of the threshold temperature (theta(p)) and volume fraction (theta(p)) of percolation in the latter.

引用

收藏

页码：2471 / 2476

页数：6

相关论文

共 17 条

[1] THERMODYNAMICS OF DROPLET CLUSTERING IN PERCOLATING AOT WATER-IN-OIL MICROEMULSIONS [J].

ALEXANDRIDIS, P ;

HOLZWARTH, JF ;

HATTON, TA .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (20) :8222-8232

[2] TITRATION CALORIMETRIC AND SPECTROPHOTOMETRIC STUDIES OF MICELLE FORMATION BY ALKYLTRIMETHYLAMMONIUM BROMIDE IN AQUEOUS-SOLUTION [J].

BACH, J ;

BLANDAMER, MJ ;

BIJMA, K ;

ENGBERTS, JBFN ;

KOOREMAN, PA ;

KACPERSKA, A ;

RAO, KC ;

SUBHA, MCS .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1995, 91 (08) :1229-1235

[3] THERMODYNAMICS OF MICELLE FORMATION BY 1-METHYL-4-ALKYLPYRIDINIUM HALIDES [J].

BIJMA, K ;

ENGBERTS, JBFN ;

HAANDRIKMAN, G ;

VANOS, NM ;

BLANDAMER, MJ ;

BUTT, MD ;

CULLIS, PM .

LANGMUIR, 1994, 10 (08) :2578-2582

[4] CONDUCTIVITY STUDY OF MICROEMULSIONS - DEPENDENCE OF STRUCTURAL BEHAVIOR OF WATER OIL SYSTEMS ON SURFACTANT, COSURFACTANT, OIL, AND TEMPERATURE [J].

BISAL, S ;

BHATTACHARYA, PK ;

MOULIK, SP .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (01) :350-355

[5] Calorimetric studies of macromolecular aqueous solutions [J].

Blandamer, MJ ;

Cullis, PM ;

Engberts, JBFN .

PURE AND APPLIED CHEMISTRY, 1996, 68 (08) :1577-1582

[6]

GRIME JK, 1985, ANAL SOLUTION CHEM, pCH6

[7] Physicochemical studies on microemulsions.: 7.: Dynamics of percolation and energetics of clustering in water/AOT/isooctane and water/AOT/decane w/o microemulsions in presence of hydrotopes (sodium salicylatei, α-naphthol, β-naphthol, resorcinol, catechol, hydroquinone, pyrogallol and urea) and bile salt (sodium cholate) [J].

Hait, SK ;

Moulik, SP ;

Rodgers, MP ;

Burke, SE ;

Palepu, R .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (29) :7145-7154

[8] STUDY OF INTERFACIAL CURVATURE IN A 3-COMPONENT MICROEMULSION WITH EQUAL VOLUMES OF WATER AND OIL [J].

HUANG, JS ;

KOTLARCHYK, M .

PHYSICAL REVIEW LETTERS, 1986, 57 (20) :2587-2589

[9] Comparison of the calorimetric and van't Hoff enthalpy of micelle formation for a nonionic surfactant in H2O and D2O solutions from 15 to 40 °C [J].

Kresheck, GC .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (34) :6596-6600

[10] CLOSED AND OPEN STRUCTURE AGGREGATES IN MICROEMULSIONS AND MECHANISM OF PERCOLATIVE CONDUCTION [J].

MAITRA, A ;

MATHEW, C ;

VARSHNEY, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (13) :5290-5292