Transport properties of aqueous ionic liquid microemulsions: influence of the anion type and presence of the cosurfactant

摘要: Transport properties, viz. specific conductivity, dynamic viscosity and apparent diffusion coefficients, were measured as a function of water content in aqueous ionic liquid microemulsions containing 1-butyl-3-methylimidazolium hexafluorophosphate, [BMIM][PF6] bis(trifluoromethanesulphonyl)imide, [BMIM][Tf2N], stabilized by the nonionic surfactant TX-100, or its mixture with cosurfactant, i.e. butanol. The investigation covered whole range through various (Winsor I–III dissolved solution) structures system. comparative approach allowed closer inspection into phenomena being on background observed transport properties behavior taking account influence cosurfactant. addition butanol offers considerable advantages, such an increase especially systems liquids lower conductivity. This is accompanied significant decrease viscosity, even to values that are comparable those molecular solvents. Moreover, reasons for surprisingly higher conductivity [BMIM][PF6]-based provided, conclusions supported cyclic voltammetry well spectrophotometric light scattering measurements.