Synthesis and properties of amino acid glucose ester dimeric surfactants

<p>Two series of lysine glucose ester AOT surfactants and glutamic acid glucose ester Bola surfactants were synthesized, using L-lysine, L-glutamic acid, and α-D-methylglucoside as raw materials. The structures of glucose esters were confirmed by ¹H NMR and ESI-MS. Some surface activities were studied, such as cmc, γ_cmc, <i>C</i>₂₀, Γ_max, and <i>A</i>_min. The results showed that cmc decreased, but γ_cmc increased with the lengthening of hydrophobic chain. The thermodynamic parameters of micellization () indicated that the micellization processes of glucose esters were spontaneous and exothermic, driven by entropy.