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Alcohol‐free diphenyl oxide disulfonate middle‐phase microemulsion systems
Author(s) -
Wu Bin,
Harwell Jeffrey H.,
Sabatini David A.,
Bailey Jason D.
Publication year - 2000
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-000-0145-9
Subject(s) - microemulsion , chemistry , pulmonary surfactant , solubility , tartaric acid , decane , alcohol , benzyl alcohol , phase (matter) , organic chemistry , biochemistry , citric acid , catalysis
Diphenyl oxide disulfonate (DPDS) surfactants were successfully used to formulate Winsor Type III middlephase microemulsion systems with tetrachloroethylene (PCE) and decane. To our knowledge this is the first time that monochain DPDS surfactant phenyloxide monohexadecyl disulfonate surfactant (C16MADS) and commercially available DOWFAX 8390 were found to form middle‐phase microemulsion systems with oils. Hydrophobic dioctyl sodium sulfosuccinate (Aerosol OT) was also used as a cosurfactant to lower the systems' hydropholic‐liphophilic balance. Two organic acids (hydrophobic octanoic acid and hydrophilic l ‐tartaric acid) were used in place of the alcohol to formulate middle‐phase microemulsion. The middle‐phase microemulsion systems dramatically increased organic solubility when compared to micellar DPDS surfactant systems. Winsor Type I systems near the Type I–III boundary produced “super” solubilization for hydrophobic oils. Findings from this study enable us to improve DPDS solubilization enhancement of hydrophobic compounds.