Hemimicelle formation of cationic surfactants at the silica gel–water interface

Adsorption Isotherms of Cetylpyridinium Chloride with Iron III Salts at Air/Water and Silica/Water Interfaces

“…Summarizing, one can admit that the CP + ions adsorb flat on the solid surface close to the dissociated silanol groups (region 1). As the surfactant concentration is increased aggregates begin to form: small micelle-like (22) or other types according to Soderlind and Stilbs (23) (region 2). The surface coverage increases with surfactant concentration until, close to the cmc, surface saturation occurs, which does not mean complete surface coverage (region 3).…”

Self-Assembled Monolayers on Nano-structured Composites for Electrochemical Sensing Applications

“…The formation of specific self-assembled structure on the solid substrate surface depends on the hydrophobicity and morphology of the substrate [58][59][60], the nature of the electrolyte and counter ions [61,62], the applied potential and the charge of the substrate [63][64][65][66][67], the surfactant concentration [68][69][70][71][72][73], the structure and type of surfactant, and the pH of the solution from which adsorption occurs. Typical surfactant aggregate structures are shown in Scheme 3 [33,74].…”

Thermodynamic Approach to the Wetting of Solids by Surface-Active Agents: A Supplementary Approach to the Gibbs Formalism

“…[3 ] and [4 ], and especially the case where this system is defined at constant temperature and pressure. The free energy function is appropriate to describe the behavior.…”