What is critical micelle concentration (CMC)?
Generally speaking surfactants are molecules that contain two different parts: a hydrophilic head group and a hydrophobic tail. Each part of a surfactant has very different solubility properties. This causes the molecule to have limited solubility in any solvent and they tend to accumulate at the interface between two phases or form micelles. The most common examples of surfactants are soaps, which are usually sodium or potassium salts of organic fatty acids, such as oleic, palmitic or stearic acid.
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