Interface Adsorption and Aggregation Behavior of Sulfonate-Based Anionic Silicone Surfactants in Aqueous Solution.

A series of sulfonate silicone surfactants possessing different hydrophobic groups were synthesized. Their adsorption and thermodynamic parameters in aqueous solutions were investigated by surface tension measurements, conductivity, transmission electron microscopy and dynamic light scattering. The results suggested that the surface activity and aggregation behavior of these surfactants were clearly influenced by the hydrophobic groups, due to the fact that hydrophobic trimethylsilyl or triethylsilyl groups in these surfactants had good flexibility and high hydrophobicity. This research work will enrich the variety of silicone surfactants and provide theoretical guidance for their potential applications.