Micellization of Amphiphilic Random Copolymers in Mixtures of Water and Methanol

Amphiphilic random copolymers can form various types of micelles in aqueous media depending on the balance between two opposite interactions- electrostatic repulsion and hydrophobic attraction. This balance can change by addition of some organic solvent to the aqueous solution, and as a result, we can control the micellar structure and micellization equilibrium by changing the solvent content. In the present study, we have investigated the micellization equilibrium of an amphiphilic statistical copolymer consisting of sodium 2-(acrylamido)-2- methylpropanesulfonate and hexyl methacrylate in mixtures of water and methanol by sedimentation equilibrium and fluorescence.