Interfacial properties modulated by the water confinement in reverse micelles created by the ionic liquid-like surfactant bmim-AOT

Soft Matter ◽  
2019 ◽  
Vol 15 (5) ◽  
pp. 947-955 ◽  
Author(s):  
Cristian M. O. Lépori ◽  
N. Mariano Correa ◽  
Juana J. Silber ◽  
Fabián Vaca Chávez ◽  
R. Darío Falcone
Keyword(s):  
Ionic Liquid ◽  
Reverse Micelles ◽  
Interfacial Properties

Change in the cationic component in the surfactant promotes changes in the electron donating ability and micropolarity of the RMs interface.

Phosphonium ionic liquids as new, reactive extractants of lactic acid

2006 ◽  
Vol 60 (5) ◽  
Author(s):  
J. Marták ◽  
Š. Schlosser
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lactic Acid ◽  
Reverse Micelles ◽  
Distribution Coefficients ◽  
Coordination Mechanism ◽  
Acid Extraction ◽  
Cyphos Il 101 ◽  
Cyphos Il 104 ◽  
Phosphonium Ionic Liquids

AbstractSolvent properties of ionic liquids with trihexyltetradecylphosphonium cation and bis(2,4,4-trimethylpentyl)phosphinate anion (Cyphos IL-104) or chloride anion (Cyphos IL-101) were studied. IL-104 effectively extracted lactic acid (LA) with distribution coefficients above 40 at low acid concentrations. IL-104 extracted only undissociated acid (LAH) what supported the coordination mechanism of lactic acid extraction via H-bonding. In the extraction of lactic acid by phosphonium chloride (IL-101) an ion-exchange mechanism contributed remarkably to the extraction especially at basic pH where anionic form of this acid predominated. A high solubility of water in hydrophobic IL-104 up to 14.4 mass % was connected with the formation of reverse micelles. A dual mechanism of water extraction to phosphonium ionic liquids was identified, which consisted of water incorporation into reverse micelles and the inclusion of water into the hydrated complex of lactic acid with ionic liquid (IL). The extraction of lactic acid caused splitting of reverse micelles with liberation of water from the solvent. In the saturated solvent only hydration water remained in the complex of lactic acid with phosphonium ionic liquid, with the suggested structure (LAH)p(IL)(H2O)2, where the value of p ranged from 1 to 3.

Combination of a protic ionic liquid-like surfactant and biocompatible solvents to generate environmentally friendly anionic reverse micelles

2019 ◽  
Vol 43 (26) ◽  
pp. 10398-10404 ◽  
Author(s):  
Nahir Dib ◽  
Juana J. Silber ◽  
N. Mariano Correa ◽  
R. Dario Falcone
Keyword(s):  
Ionic Liquid ◽  
Reverse Micelles ◽  
Environmentally Friendly ◽  
Polar Solvents ◽  
Protic Ionic Liquid

imim–DEHP, a versatile protic IL-like surfactant to formulate aqueous RMs in biocompatible non-polar solvents.

A Unique Ionic Liquid with Amphiphilic Properties That Can Form Reverse Micelles and Spontaneous Unilamellar Vesicles

2012 ◽  
Vol 18 (49) ◽  
pp. 15598-15601 ◽  
Author(s):  
Cristian C. Villa ◽  
Fernando Moyano ◽  
Marcelo Ceolin ◽  
Juana J. Silber ◽  
R. Darío Falcone ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Reverse Micelles ◽  
Unilamellar Vesicles

Investigation of the Electrochemical Properties of Polymer–LiX–Ionic Liquid Ternary Systems

2007 ◽  
Vol 60 (1) ◽  
pp. 47 ◽  
Author(s):  
Cosimo Tizzani ◽  
Giovanni B. Appetecchi ◽  
Maria Carewska ◽  
Guk-Tae Kim ◽  
Stefano Passerini
Keyword(s):  
Ionic Liquid ◽  
Electrochemical Properties ◽  
Lithium Salt ◽  
Ionic Conductivities ◽  
Ternary Systems ◽  
Interfacial Properties ◽  
Lithium Metal ◽  
Fluorinated Polymers ◽  
Metal Electrodes ◽  
Electrochemical Devices

The electrochemical properties of ternary systems that consist of a polymer, a lithium salt, and an ionic liquid that shares the same anion (TFSI, bis(trifluoromethansulfonyl)imide) are reported and compared. The investigation involved two different polymers (PVdF-HFP and PTFE) that were selected because of their common use in lithium-based electrochemical devices. It was found that PVdF-HFP swelled by the ionic liquid used in the work while porous PTFE remained inert. The ternary electrolytes showed interesting ionic conductivities. However, the presence of fluorinated polymers resulted in poor interfacial properties with lithium metal electrodes.

Sign in / Sign up

Export Citation Format

Share Document