Solubilization of hydrophobic dyes in surfactant solutions
Review article, 2013

In this paper, the use of surfactants for solubilization of hydrophobic organic dyes (mainly solvent and disperse dyes) has been reviewed. The effect of parameters such as the chemical structures of the surfactant and the dye, addition of salt and of polyelectrolytes, pH, and temperature on dye solubilization has been discussed. Surfactant self-assemble into micelles in aqueous solution and below the concentration where this occurs-the critical micelle concentration (CMC)-there is no solubilization. Above the CMC, the amount of solubilized dye increases linearly with the increase in surfactant concentration. It is demonstrated that different surfactants work best for different dyes. In general, nonionic surfactants have higher solubilization power than anionic and cationic surfactants. It is likely that the reason for the good performance of nonionic surfactants is that they allow dyes to be accommodated not only in the inner, hydrocarbon part of the micelle but also in the headgroup shell. It is demonstrated that the location of a dye in a surfactant micelle can be assessed from the absorption spectrum of the dye-containing micellar solution.

water insoluble

hydrophobic

solubilization

surfactant

micelle

dye

Author

Ali Tehrani

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Krister Holmberg

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Materials

1996-1944 (ISSN)

Vol. 6 2 580-608

Subject Categories

Physical Chemistry

Chemical Engineering

Materials Chemistry

Other Chemical Engineering

Other Chemistry Topics

Organic Chemistry

Areas of Advance

Materials Science

DOI

10.3390/ma6020580

More information

Latest update

7/19/2021