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Journal of Dispersion Science and Technology Volume 13, 1992 - Issue 5
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Original Articles

SURFACTANT-OIL-WATER SYSTEMS NEAR THE AFFINITY INVERSION PART VIII : OPTIMUM FORMULATION AND PHASE BEHAVIOR OF MIXED ANIONIC-NONIONIC SYSTEMS VERSUS TEMPERATURE.

R. E. Antón Lab. FIRP, Ingenieria Quimíca, Univ. de Los Andes, Mérida, 5101, Venezuela
,
A. Graciaa LTEMPM, CURS, Univ. de Pau et des Pays de 1'Adour, Pau, 64000, France
,
J. Lachaise LTEMPM, CURS, Univ. de Pau et des Pays de 1'Adour, Pau, 64000, France
&
J. L. Salager Lab. FIRP, Ingenieria Quimíca, Univ. de Los Andes, Mérida, 5101, Venezuela
Pages 565-579 | Received 10 Dec 1991, Published online: 27 Apr 2007
 
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ABSTRACT

Surfactant-oil-water systems with a phase behavior insensitive to temperature and composition can be achieved by anionic-nonionic mixing. By using of a linear mixing rule and a linear temperature dependency, it is possible to interpret most of the features exhibited by the experimental phase behavior data obtained with sulfonate and ethoxylated alkylphenol mixtures. Deviation from the theoretical model are probably due to anionic and nonionic groups association which reduces the overall hydrophilic character.

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