Molecular aggregation of ionic liquid (methyl-octyl imidazolium chloride) in aqueous glycerol solutions

Abstract

Ionic liquids (IL) are often referred to as organic compounds consisting of a cation and an organic or non-organic anion, having a melting point below 100°C. Cations determine the physical properties of IL (melting point, viscosity, density), whereas anions determine chemical properties. Since the physical and chemical properties of ILs can be adapted to the specific conditions by careful selection of cations and anions, IL has become widely used in a variety of scientific and industrial applications. This research is part of a program devoted to the study of the effects of glycerol on the micellization of IL in aqueous solutions that is of great interest for cosmetology, pharmaceutical and other industries. Significant work in this research has been undertaken and the results are summarized in the present paper. The research of the system IL — glycerol — heavy water was conducted using NMR technique. Existence of molecular aggregates in glycerol-water media was confirmed. Isotopic exchange of H↔D was investigated. The micellization concentration range for this system was obtained. Refs 42. Figs 13.