Synergy between silica and polyoxyethylene surfactants in the formation of O/W emulsions

被引：105

作者：

Midmore, BR ^{[1
]}

机构：

[1] Univ Reading, Dept Chem, Reading RG6 6AD, Berks, England

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1998年 / 145卷 / 1-3期

关键词：

pickering; O/W emulsion; silica; polyoxyethylene; surfactant;

D O I：

10.1016/S0927-7757(98)00577-9

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：

The stability of O/W emulsions stabilised with a combination of colloidal silica (Ludox) and non-ionic POE surfactant was investigated for a range of surfactants and two oils, one paraffin, the other vegetable. A range of HLB values was covered and stabilities were compared with those of emulsions prepared with silica absent. The effect on stability of the silica/surfactant ratio and quantity of silica/surfactant was also investigated. Freeze fracture transition electron microscopy showed that the silica particles were arranged mainly as close-packed monolayers. Rheological measurements were used to investigate emulsion structure and were compared with similar data obtained for silica/surfactant Aocs. A strong emulsification synergy between silica and non-ionic surfactant was demonstrated. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：133 / 143

页数：11

共 21 条

[1] MASS, SIZE AND SHAPE OF MICELLES FORMED IN AQUEOUS-SOLUTIONS OF ETHOXYLATED NONYL-PHENOLS [J].

BEDO, Z ;

BERECZ, E ;

LAKATOS, I .

COLLOID AND POLYMER SCIENCE, 1987, 265 (08) :715-722

[2]

BRIGGS TR, 1921, J IND ENG CHEM, V13, P1008

[3] NATURE OF THE ADSORPTION OF THE NONIONIC SURFACTANT PENTAETHYLENE GLYCOL MONODODECYL ETHER ON A LUDOX SILICA SOL [J].

CUMMINS, PG ;

PENFOLD, J ;

STAPLES, E .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (20) :8092-8094

[4] THERMODYNAMIC (INCLUDING MICROCALORIMETRY) STUDY OF THE ADSORPTION OF NONIONIC AND ANIONIC SURFACTANTS ONTO SILICA, KAOLIN, AND ALUMINA [J].

DENOYEL, R ;

ROUQUEROL, J .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1991, 143 (02) :555-572

[5] INTERFACIAL AGGREGATION OF A NONIONIC SURFACTANT - EFFECT ON THE STABILITY OF SILICA SUSPENSIONS [J].

GIORDANOPALMINO, F ;

DENOYEL, R ;

ROUQUEROL, J .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1994, 165 (01) :82-90

[6] THE MECHANISM OF EMULSION STABILIZATION BY SMALL SILICA (LUDOX) PARTICLES [J].

HASSANDER, H ;

JOHANSSON, B ;

TORNELL, B .

COLLOIDS AND SURFACES, 1989, 40 (1-2) :93-105

[7]

HOLLIS GL, 1995, SURFACTANTS EUROPA

[8]

Iler R.K., 1979, The Chemistry of Silica

[9] FLUORESCENCE DECAY STUDY OF THE ADSORPTION OF NONIONIC SURFACTANTS AT THE SOLID LIQUID INTERFACE .1. STRUCTURE OF THE ADSORPTION LAYER ON A HYDROPHILIC SOLID [J].

LEVITZ, P ;

VANDAMME, H ;

KERAVIS, D .

JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (11) :2228-2235

[10] FLUORESCENCE DECAY STUDY OF THE ADSORPTION OF NONIONIC SURFACTANTS AT THE SOLID-LIQUID INTERFACE .2. INFLUENCE OF POLAR CHAIN-LENGTH [J].

LEVITZ, P ;

VANDAMME, H .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (07) :1302-1310

← 1 2 3 →