ISSN:
1435-1536
Keywords:
Extraction-spectrophotometric determination
;
anionic surfactant
;
phase transition
;
multiphase microemulsion systems
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The determination of anionic surfactant contents in multiphase microemulsions, based on the extraction-spectrophotometric method, has been carried out. The multiphase microemulsion system we studied is composed of sodium octyl sulfate (SOS), n-hexanol, n-decane, and brine. The system shows Winsor type phase-transitions (Winsor I type ↔ Winsor III type ↔ Winsor II type) with changing salinity. We found that the extraction-spectrophotometric method used here is very useful for the determination of anionic surfactants in any microemulsion phases: the partition ratios of SOS in two different phases change continuously within the salinity region at which the phase transition takes place.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01457266
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