Dynamic salinity-induced phase-inversion conductivity measurements used to characterize alcohol ethoxylate based surfactant/oil/water systems

被引：1

作者：

Lahasky, Samuel H. H. ^{[1
,3
]}

Barker, Emily M. M. ^{[1
]}

Guimaraes, Juliana Caixeta ^{[2
,4
]}

Salvato, Rafael Caetano Jardim Pinto da Silva ^{[2
]}

机构：

[1] Oxiteno USA, Res & Dev Ctr, Hattiesburg, MS USA

[2] Oxiteno Brazil, Prod Technol Ctr, Sao Paulo, Brazil

[3] Oxiteno, 46 Shelby Thames Dr, Hattiesburg, MS 39402 USA

[4] Oxiteno SA, Prod Technol Ctr, Ave Ind 365, BR-09380435 Maua, SP, Brazil

来源：

JOURNAL OF SURFACTANTS AND DETERGENTS | 2023年 / 26卷 / 04期

关键词：

analytical chemistry and techniques; interfacial science; non-ionic surfactants; surface activity; EMULSION CATASTROPHIC INVERSION; INTERFACIAL-TENSION; CHARACTERISTIC CURVATURE; OPTIMUM FORMULATION; NORMAL MORPHOLOGY; NANOEMULSIONS; TEMPERATURE; BEHAVIOR; HLD;

D O I：

10.1002/jsde.12638

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Dynamic conductivity measurements proved to be an effective and rapid method to determine the optimal experimental conditions for a salinity-induced phase-inversion from surfactant/oil/water (SOW) systems consisting of nonionic surfactants, more specifically alcohol ethoxylates. This emerging methodology can be used as a rapid screening tool to determine the impact of alcohol ethoxylate surfactants in a SOW solution and was demonstrated to be not only repeatable, but highly comparable to the traditional static method, in which the solutions are added to flat bottom tubes and allowed to equilibrate at a given temperature for extended time periods. Given a set of experimental conditions (oil-type, temperature, etc.), these dynamic salinity-induced phase-inversion (Dy-SPI) conductivity measurements can be used to determine the optimal salinity (S*) for a given surfactant at a set concentration, as well as its characteristic curvature via a series of experiments with varying oil types. Additionally, Dy-SPI was used to confirm the previously observed inverse relationship between the concentration of an alcohol ethoxylate and S* under a given set of conditions. What makes this method so unique is the amount of time (30 min to 1 h) and the simplicity of the equipment needed for these Dy-SPI conductivity measurements, allowing for a rapid screening tool for these SOW parameters.

引用

页码：527 / 540

页数：14