Micelle Formation of Protic Ionic Liquids in Aqueous Solution
作者:Dheiver Santos
DOI:10.1021/acs.jced.7b01053
日期:2018.5.10
ability of certain surfactant ionicliquids to reduce the surface tension of aqueous solutions and to aggregate in the form of micelles, even at low concentrations, allowing their use as stabilizing or destabilizing agents in homogeneous polymerization in water/oil emulsions. Within this context, this work aims to verify the possible micellar properties of the ionicliquids. Critical micellar concentration
The present invention relates to ionic liquid comprising an anion and a cation wherein the cation is a primary, secondary or tertiary ammonium ion containing a protonated nitrogen atom.
Brønsted Ionic Liquids for Sustainable Processes: Synthesis and Physical Properties
作者:Víctor H. Álvarez、Noelia Dosil、Rebeca Gonzalez-Cabaleiro、Silvana Mattedi、Manuel Martin-Pastor、Miguel Iglesias、José M. Navaza
DOI:10.1021/je900550v
日期:2010.2.11
This report describes the synthesis of ionic liquids that incorporate the N-methyl-2-hydroxyethylammonium cation with various carboxylic acid anions and the study of some of their physical properties, including self-diffusion coefficients, density, speed of sound, viscosity, and refractive index. H-1 and C-13 NMR spectra were used to characterize the chemical structure of the species in concordance with FT-IR spectra. DOSY NMR spectra was used to determine the self-diffusion coefficients of the components, which were consistent with the formation of a lamellar or micellar liquid-crystal phase in samples containing an alkyl chain in the anion species. Thermoacoustic parameters showed that anion alkyl chain has an influence on the molecular packing of these ionic liquids. In addition, the effect of temperature on the properties seems to be related to the size and the type of aliphatic chain of the ionic liquid.
The present invention relates to ionic liquid comprising an anion and a cation wherein the cation is a primary, secondary or tertiary ammonium ion containing a protonated nitrogen atom.