Studies on the phase behavior and solubilization of the microemulsion formed by surfactant-like ionic liquids with ɛ–β-fish-like phase diagram

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

“…3, 5 or 6. This effect was not observed in other ternary systems involving surface active ionic liquids [22][23][24][25] for which very small amounts (<1 wt%) produced the three-phase system. On the other hand, this behavior is often found with non-ionic surfactants, namely alkyl polyglycol ethers [27].…”

“…The large variety of interactions playing a role in ionic liquids, the chemical and thermal stability associated to most of them, and also the easiness in handling a liquid component rather than a solid are of particular interest. Among the works published to date, the efforts are centered in evaluating the surfactant character of these ionic liquids (CMC, surface tension reduction for air-water interface, evaluation of thermodynamic functions associated to micellization) [20,21] and the phase diagram determination in (water + surfactant + alkane) ternary systems [22][23][24][25]. The latter is very important since these ternary systems represent (in a very simplistic way) the system that is found into a reservoir during surfactant flooding extraction.…”

Dilational Viscoelasticity of Imidazole-Based Surface Active Ionic Liquids at the Air/Water Interface

“…Data of FTIR, 1 H NMR as well as elemental contents of N, C, H (Table S1 (Supporting Information)) demonstrate the synthesis of CnmimBr. The melting points of C12mimBr and C14mimBr were 39.6 and 48.4°C 20 , respectively.…”

“…In our previous work, one of the SAILs, CnmimBr (n = 12, 14, 16), has been used to form microemulsions. It is revealed that the solubilization power of the CnmimBr based microemulsions increases with the increase in alkyl chain length, and with adding of inorganic salts 20 .…”

Microemulsions - A Brief Introduction

“…It has been observed that the added salts has a great influence on the solubilisation ability of the microemulsion system (Komesvarakul et al, 2006, Wei et al, 2005, Li et al, 2003, Van Nieuwkoop & Snoei, 1985, Yu et al, 2009, Qin et al 2008, Nedjhioui et al, 2007, Koyanagi et al, 2007, Mitra & Paul, 2005, Shinoda, 1967, Shinoda & Saito, 1968. As an example, it has been observed that the addition of salt shifts the fish diagram towards more hydrophobic oil systems and higher surfactant concentrations will be required (Komesvarakul et al, 2006).…”