OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Mixed adsorption and surface tension prediction of nonideal ternary surfactant systems

Cui, Z.-G. and Canselier, Jean-Paul and Zhou, X.-Q. Mixed adsorption and surface tension prediction of nonideal ternary surfactant systems. (2005) Colloid & Polymer Science, vol. 2 (n° 5). pp. 539-550. ISSN 1435-1536

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
510kB

Official URL: http://dx.doi.org/10.1007/s00396-004-1183-3

Abstract

To deal with the mixed adsorption of nonideal ternary surfactant systems, the regular solution approximation for nonideal binary surfactant systems is extended and a pseudo-binary system treatment is also proposed. With both treatments, the compositions of the mixed monolayer and the solution concentrations required to produce given surface tensions can be predicted based only on the gamma-LogC curves of individual surfactants and the pair interaction parameters. Conversely, the surface tensions of solutions with different bulk compositions can be predicted by the surface tension equations for mixed surfactant systems. Two ternary systems: SDS/Hyamine 1622/AEO7, composed of homogeneous surfactants, and AES/DPCl/AEO9, composed of commercial surfactants, in the presence of excess NaCl, are examined for the applicability of the two treatments. The results show that, in general, the pseudo-binary system treatment gives better prediction than the extended regular solution approximation, and the applicability of the latter to typical anionic/cationic/nonionic nonideal ternary surfactant systems seems to depend on the combined interaction parameter, $$ {\mathop {(\beta }\nolimits_{an}^s } + {\mathop \beta \nolimits_{cn}^s })/2 - {\mathop \beta \nolimits_{ac}^s }/4 $$ : the more it deviates from zero, the larger the prediction difference. If $$ {\mathop {(\beta }\nolimits_{an}^s } + {\mathop \beta \nolimits_{cn}^s })/2 - {\mathop \beta \nolimits_{ac}^s }/4 $$ rarr0, good agreements between predicted and experimental results can be obtained and both treatments, though differently derived, are interrelated and tend to be equivalent.

Item Type:Article
Additional Information:Thanks to SpringerLink editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Colloid & Polymer Science website : http://www.springerlink.com/content/101551
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Jiangnan University, Southern Yangtze University - SYTU (CHINA)
Laboratory name:
Statistics:download
Deposited By: Hélène Dubernard

Repository Staff Only: item control page