THE EFFECT OF TETRAALKYLAMMONIUM IONS ON THE STABILITY OF DILUTE O/W EMULSIONS

被引：19

作者：

JANSSON, M

ERIKSSON, L

SKAGERLIND, P

机构：

[1] Institute for Surface Chemistry, Stockholm, S-11486

来源：

COLLOIDS AND SURFACES | 1991年 / 53卷 / 1-2期

关键词：

D O I：

10.1016/0166-6622(91)80042-M

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 effects of tetraalkylammonium ions on the stability of dilute o/w emulsions were investigated with turbidimetric measurements. Large tetraalkylammonium ions were found to induce flocculation of emulsions stabilized by ionic emulsifiers at 10 times lower concentrations compared to divalent cations. Emulsions stabilized by nonionic surfactants were also destabilized by low concentrations of organic ions. Increasing the effective size of sodium ions by inclusion complex formation with a crown ether, was also found to destabilize the emulsion. All these observations demonstrate the importance of the ion size/hydrophobicity on the stability of emulsions in the presence of electrolyte.

引用

页码：157 / 167

页数：11

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