Salt-free catanionic surface active ionic liquids 1-alkyl-3-methylimidazolium alkylsulfate: Aggregation behavior in aqueous solution

Phase behavior of the surfactant ionic liquid trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate with water and dodecane

“…1. It is a catanionic surfactant since both the anion and the cation have surfactant character [47]. The alkyl chains in the anion are equal and branched, while in the cation are linear but combining different sizes.…”

Theory and recent applications of coacervate-based extraction techniques

“…Recently, so-called "catanionic" solutions, which are salt-free mixtures of anionic and cationic surfactants in water, were investigated. They show surface activity superior to the corresponding single-chained SAILs and conventional anionic surfactant analogues [98].…”

“…They have properties similar to traditional surfactants and can assemble aggregates, such as micelles or vesicles [93] SO 4 ]}, a halogen-free, low-cost, alkyl sulfate-based SAIL has properties superior to SDS [97]. Recently, so-called "catanionic" solutions, which are salt-free mixtures of anionic and cationic surfactants in water, were investigated.…”

Catanionic surfactant formation from the interaction of the cationic surfactant hexadecyltrimethylammonium bromide (CTAB) and the ionic liquid 1-butyl-3-methylimidazolium octyl sulfate (bmim-octyl SO4) in aqueous solution

“…In fact there are several examples of catanionic surfactants formed from ionic liquids. They can be obtained by synthesis combining the appropriate cation and anion [42][43][44][45][46][47] or by mixing the cationic and the anionic compounds in equimolar ratio in aqueous solution [48][49][50][51].…”