Journal of the American Oil Chemists Society

, Volume 69, Issue 1, pp 30–33

Relationship of structure to properties of surfactants. 16. Linear decyldiphenylether sulfonates

  • Milton J. Rosen
  • Zhen Huo Zhu
  • Xi Yuan Hua
Article

DOI: 10.1007/BF02635872

Cite this article as:
Rosen, M.J., Zhu, Z.H. & Hua, X.Y. J Am Oil Chem Soc (1992) 69: 30. doi:10.1007/BF02635872

Abstract

The properties of some well-characterized sodium linear decyldiphenylether (C10DPE)sulfonates have been studied. Among the properties investigated are dynamic and equilibrium surface tension, critical micelle concentration (CMC), area per molecule at the aqueous solution/air interface, wetting time by the Draves technique, foaming by the Ross-Miles method, solubilization, and hydrotropy. The decyldiphenylether moiety appears to be equivalent to a terminally substituted straight alkyl chain of 16 carbon atoms. The trialkyl- and dialkyl-mono-sulfonates have solubilities of < 0.01 g/dm3 in water, but are readily soluble in hexane. The didecyldiphenyl ether disulfonate (DADS) has a very low CMC value (1.0 × 10−5 mol dm−3) in aqueous 0.1 N Na+ solution (NaCl), characteristic of surfactants with two hydrophilic and two hydrophobic groups. It also has a much larger area per molecule at the aqueous solution/air interface than the monodecyldiphenyl-ether monosulfonate (MAMS) and a much higher surface tension at the CMC. MAMS has a much lower surface tension at a surface age of 1 second (γ1s) than either DADS or the monodecyldiphenylether disulfonate (MADS). In agreement with γ1s and γeq values, wetting times increase in the order: MAMS < DADS < MADS and initial foam heights decrease in the order: MAMS > DADS > MADS. Solubilization for three water-insoluble surfactants decreases in the order: DADS > MAMS > MADS, while hydrotropy is most pronounced with the disulfonates.

Key words

Alkyldiphenylether sulfonates critical micelle concentration decyldiphenylether disulfonates dynamic surface tension equilibrium surface tension hydrotropy solubilization solution/air interface surfactants 

Copyright information

© American Oil Chemists’ Society 1992

Authors and Affiliations

  • Milton J. Rosen
    • 1
  • Zhen Huo Zhu
    • 1
  • Xi Yuan Hua
    • 1
  1. 1.Surfactant Research Institute, Brooklyn CollegeCity University of New YorkBrooklyn

Personalised recommendations