Determination of critical micelle concentration of surfactants

Surfactants are widely used in household and industrial cleaners, cosmetics and textiles dyeing process as leveling, dispersing and wetting agents [1]. Surfactants and some dyes are able to associate in aqueous solutions to aggregate and form micelles. This property is due to the presence of both hydrophobic and hydrophilic groups in each surfactant molecule [2]. Surfactants can persist as separated molecules up to a limiting concentration, known as the critical micelle concentration (CMC). This is perhaps the most important characteristic of surfactants and some ionic liquids (IL). An IL is a salt composed of an organic cation and, commonly, an inorganic anion that is molten when the temperature is at, or close to, room temperature [3]. The physical properties such as conductivity, surface tension and others of the surfactants solutions are sharply changing above the CMC [4]. [...]Biochemijos katedraVytauto Didžiojo universiteta