Polymer-surfactant interactions for delivery applications
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Mixtures of polymers and surfactants are widely used in aqueous media to provide structure, solubilization domains, colloidal stability, and delivery capabilities. Underlying these functions are inter-and intra-molecular interactions that depend on (1) the nature of the polymers, (2) the type of surfactants, and (3) solution conditions (e.g., salinity, pH). Such interactions are manifested in solution phase behavior and self-assembled structures attained by the polymer + surfactant mixtures. The work presented in this thesis paper contributes to our knowledge of how delivery of cationic cellulose water-soluble polymers (acting as carriers of actives) on surfaces such as hair is modulated by the addition of surfactant and other solutes to aqueous solution.