Synthesis and properties of amino acid glucose ester dimeric surfactants

摘要

Two series of lysine glucose ester AOT surfactants and glutamic acid glucose ester Bola surfactants were synthesized, using L-lysine, L-glutamic acid, and alpha-D-methylglucoside as raw materials. The structures of glucose esters were confirmed by H-1 NMR and ESI-MS. Some surface activities were studied, such as cmc, gamma(cmc), C-20, Gamma(max), and A(min). The results showed that cmc decreased, but gamma(cmc) increased with the lengthening of hydrophobic chain. The thermodynamic parameters of micellization (Delta G(m)(theta), Delta H-m(theta), Delta S-m(theta)) indicated that the micellization processes of glucose esters were spontaneous and exothermic, driven by entropy.