Adsorption of Alkyltrimethylammonium Bromides at the Various Interfaces

Amphiphilic derivatives of dextran: Adsorption at air/water and oil/water interfaces

“…For instance, an increase in the sulfopropyl content tends to increase γ int e , while it lowers γ e . It was shown for low-molecular-weight surfactants that at high surface coverage, the surface excess was lower at the oil-water interface than at the air-water interface [61]. The authors explained this result by the fact that at the oil-water interface, surfactant molecules are in the vicinity of oil molecules and have to share the interface, while at the air-water interface, surfactant molecules are free to assemble.…”

Modeling of Equilibrium Adsorption and Surface Tension of Cationic Gemini Surfactants

“…• values are often used to infer deviations from ideal adsorption behavior (28)(29)(30) and are known to correlate with the length of the alkyl surfactant tail (31)(32)(33). To compare K values, and similarly G…”

The effect of molecular structure on the surface properties of selected quaternary ammonium salts

“…There are a lot of studies of the surface properties of QAS, especially those belonging in the group of alkyltrimethylammonium salts [6][7][8][9][10][11][12]. It is commonly known that the surface activity of these compounds increases with the growth of the alkyl chain, whereas critical micelle concentration decreases with the growth of hydrophobicity.…”