A new type of microemulsion consisting of two halogen-free ionic liquids and one oil component

Rojas, O.; Tiersch, Brigitte; Frasca, Stefano; Wollenberger, Ulla; Koetz, Joachim

doi:10.1016/j.colsurfa.2010.08.003

Cited by 33 publications

(17 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The boundaries between O/W, BC, and W/O subregions were accordingly constructed based on the conductivity reflecting point (1, 2) marked in Figure A, as well as a series of reflecting points for other I value (0.10, 0.30) and mapping in Figure , along with the optical photographs of MMEs (other MILSs based MMEs see Figures S2 and S3). For all four MILSs based MMEs, the boundaries of subregions were not significantly changed along with the alkyl side chain length of MILSs cation, which is similar to other ILs-based microemulsions. , …”

Section: Resultssupporting

confidence: 71%

“…Electrical conductivity method has proven to be a valid method for identifying the microstructure transition in the isotropic phase region of traditional water-in-oil (W/O), , as well as ILs-based microemulsions, , based on the percolation theory. Due to the droplet–droplet interactions and clustering progress, the conductivity of microemulsions usually shows a percolation boundary and a linear change interval, and the percolation boundary was typically rendered as a steep jump of conductivity .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic Microemulsions Stabilized by Alkyltrimethylammonium-Based Magnetic Ionic Liquids Surfactants (MILSs)

et al. 2021

View full text Add to dashboard Cite

While traditional microemulsions are versatile media for nanoscience and nanotechnology, stimulus-responsive microemulsions are more challenging to realize, and only a handful of cases have been reported. We here introduce magnetic microemulsions (MMEs) stabilized by alkyltrimethylammonium-based magnetic ionic liquids surfactants (MILSs), paired with water as the polar phase, aliphatic oils as the nonpolar phase, and aliphatic alcohols as the cosurfactant. n-Hexane coupled with n(MILSs/1butanol) = 1:4 showed the most excellent ability to form MMEs, and the range of the monophasic region was expanded with increasing alkyl chain length of MILSs cation. Classical oil-in-water (O/W), bicontinuous (BC) sponge structure, and inverse water-in-oil (W/ O) subregions were clarified by conductivity method. Dynamic light scattering showed that the diameter of W/O microemulsions droplets were about 2−6 nm. Magnetic susceptibility and rheological measurements revealed that these MMEs are with high magnetic susceptibility and low viscosity, which show interesting potential applications based on a manipulation via external magnetic field. Moreover, these MMEs showed Newtonian-like flow behavior within respective subregions, and their magnetic susceptibility was not affected by the subregion structure but MILSs mass fraction.

show abstract

Section: Resultssupporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Magnetic Microemulsions Stabilized by Alkyltrimethylammonium-Based Magnetic Ionic Liquids Surfactants (MILSs)

et al. 2021

View full text Add to dashboard Cite

show abstract

“…With increasing water content, the initial nonlinear increase of conductivity indicates the existence of a percolation phenomenon that is attributed to inverse microdroplet aggregation, while the following linear increase is due to the formation of a w/o microemulsion. 35 At a certain water concentration, a sharp decrease in conductivity indicates the formation of a bicontinuous mesophase (see Figure 3). …”

Section: Resultsmentioning

confidence: 99%

Ionic Liquid-Based Microemulsions in Catalysis

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Phase diagram of the dual-IL miocroemulsion system is characterized at 25 C by visually observing transition from clear transparent solution to turbid solution or on the contrary. 14,15,27,28 0.87 g of BmimPF 6 and 0.05 g of H 2 O are mixed and mechanically vibrated for 20 min in a 50 mL tube. The mixture is centrifuged at 8000 rpm for 5 min for phase separation.…”

Section: Characterization Of the Dual-il Microemulsion Systemmentioning

confidence: 99%

“…[8][9][10] In addition the structure of IL can be readily designed to offer adjustable properties which bring large possibilities for the development of IL-based mocroemulsion systems for extracting the targets of interest. Recently, efforts have been dedicated to theoretical studies on microemulsion systems with ionic liquids, [11][12][13][14][15] where conventional organic surfactants or co-surfactants are involved. From the view point of life science applications, the use of organics is highly unexpected.…”

Section: Introductionmentioning

confidence: 99%

A dual-ionic liquid microemulsion system for the selective isolation of hemoglobin

et al. 2014

View full text Add to dashboard Cite

A novel dual-ionic liquid (IL) microemulsion system is developed with IL 1-decyl-3-methylimidazolium bromide (DmimBr) as the surfactant and IL 1-butyl-3-methylimidazolium hexaflourophosphate (BmimPF 6 ) as a substitute for organic solvent. The phase diagram of this dual-IL microemulsion system clearly shows the formation of a single phase within a wide range of BmimPF 6 (1.76-98.3%, wt) and in the presence of an appropriate amount of DmimBr and water. The microemulsion is characterized by means of FT-IR spectra, dynamic light scattering and molecular probe. The dual-IL microemulsion system has been demonstrated to be effective for the extraction of proteins, and exhibited an obvious improvement in extraction efficiency for hemoglobin in comparison with pure BmimPF 6 . When 100 mL microemulsion is used to extract 100 mg mL À1 of proteins in an equal volume of sample solution, high selective extraction of hemoglobin (Hb) has been observed at pH 5. This might be attributed to the coordination interaction between the heme group of Hb and the imidazolium cationic moiety in the ionic liquids. Hb transferred into the microemulsion can be readily recovered by back extraction with Britton-Robinson buffer at pH 12, giving rise to a recovery of 55.6%. The dual-IL microemulsion system is practically applied to the isolation of Hb from human whole blood and the SDS-PAGE indicates that hemoglobin has been selectively isolated from human blood in the presence of co-existing protein species.

show abstract

A new type of microemulsion consisting of two halogen-free ionic liquids and one oil component

Cited by 33 publications

References 42 publications

Magnetic Microemulsions Stabilized by Alkyltrimethylammonium-Based Magnetic Ionic Liquids Surfactants (MILSs)

Magnetic Microemulsions Stabilized by Alkyltrimethylammonium-Based Magnetic Ionic Liquids Surfactants (MILSs)

Ionic Liquid-Based Microemulsions in Catalysis

A dual-ionic liquid microemulsion system for the selective isolation of hemoglobin

Contact Info

Product

Resources

About