Coadsorption of Phenoxyalcohols and Cationic Surfactants with Various Headgroups at the Silica/Water Interface

Dispersion stability of a ceramic glaze achieved through ionic surfactant adsorption

“…At high salt concentrations, the adsorption starts at a higher surfactant concentration due to the screening of the surface charge by the electrolyte, but it increases more steeply due to the diminished lateral repulsions between adsorbed surfactant molecules [9]. Monticone and Treiner [11,12] support this mechanism, reporting that adsorption of CPC on silica particles yields an adsorption plateau for a concentration which corresponds well with the surfactant CMC. The adsorbed amount increases with increasing ionic strength and increasing pH.…”

“…The adsorption of CPC to the ceramic glaze and its impact on the stability of the glaze suspensions can be explained in a relatively straightforward fashion despite the complexity of the four-component glaze mixture. This explanation is aided significantly by previous studies of adsorption of the cetylpyridinium ion to the individual components [8][9][10]12,15,16,18,21]. The dominant variable in terms of the surface chemistry of the particles is their surface charge as highlighted by the IEP values in Table 1.…”

“…In previous studies, the effect of pH, ionic strength, and surfactant concentration on the adsorption of surfactants has only been studied on the single mineral ceramic glaze components, namely, silica [8][9][10][11][12][13][14][15], quartz [16,17], feldspar [18], kaolinite [19][20][21][22][23][24][25][26][27], and limestone [28][29][30].…”

Interactions between Surfactants and Particles: Dispersion, Surface Modification, and Adsolubilization

“…The amount of ionic surfactants adsorbed onto oppositely charged particles increases accompanying the formation of monolayer and bilayer. For adsolubilization studies, two systems have been mainly investigated: silica-cationic surfactant systems (28,29) and alumina-anionic surfactant systems (30)(31)(32).…”

Mesoporous Silica Colloids: Wetting, Surface Diffusion, and Cationic Surfactant Adsorption

“…It is also well known that for planar silica surfaces, cationic surfactant adsorption usually increases if the pH increases because of the increase negative charge of the silica surface. 35 In order to test this hypothesis, we have added Na + OH  to a CTA + Br  solution (C = 0.5 mM) in the presence of porous particles. The final pH measured is very similar (pH = 10.7) to the pH of CTA + OH  surfactants where a strong adsorption was observed.…”