Interfacial and Aggregation Behaviour of Sodium Dodecyl Sulphate Induced by Ionic Liquids

Abstract

IntroductionSurfactants exhibit amphiphilic natures that alter the surface tension at air-liquid interface. Self aggregation behaviour of surfactant depends on different physicochemical parameters, viz., temperature, pH, additives, salinity and ionic strength 1 4 . An ionic liquid ILs usually contains one cationic organic component and also consists of short lived ion pair, that facilitates interfacial adsorption and aggregation of conventional surfactants 5 7 . Ionic liquids not only have emerged as alternatives to the conventional solvents, but it can also significantly alter surfactant aggregation 8 10 . In case of ILs having melting point below 100 , mutual interfacial adsorption and aggregation take place along with the surfactants 7 . ILs can easily interact with surfactant molecules leading to the formation of mixed micelles 11 . Electrostatic interaction between two oppositely charged head groups can demonstrate different hydration energy for the surfactant molecules in presence of ionic liquid, especially for anionic surfactants 12,13 . Oppositely charged IL

Effect of Oligomers and Polymers of Ethylene Glycols on Micellar Characteristics of Aqueous Solutions of Sodium Pentadectyl Sulfonate

“…Many publications are devoted to the study of the interaction of polymers with low molecular mass anionic and cationic surfactants [14]. Most of them belong to polyelectrolyte (PE) complexes with oppositely charged surfactants.…”