Abstract
The phase behaviour of a cationic perfluoropolyether surfactant in supercritical carbon dioxide and its ability to solubilise ionic dyes has been investigated. This cationic surfactant was found to dissolve satisfactorily in supercritical carbon dioxide and was able to form micellar aggregates incorporating a small amount of water in their interior. Conventional anionic dyes such as acid and reactive dyes were solubilised satisfactorily in the cationic surfactant/water/supercritical carbon dioxide system. The surfactant was more effective in this respect than its anionic analogue.
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