gemini surfactants

Amphiphilic Esters of Pyromellitic Acid: Synthesis and Prospects of Applications

This review focuses on amphiphilic diesters and "gemini" surfactants synthesized from pyromellitic acid, polyethylene glycols, aliphatic alcohols, and cholesterol. The discussion encompasses their unique colloidal and chemical properties, with an emphasis on the relationship between critical micelle concentration and hydrophilic-lipophilic balance. Structural factors, particularly the length of the lipophilic substituents, significantly influence CMC values in aqueous systems.