Novel emulsions formed by a new glycosyl surfactants containing an amide group
Taking the lauric acid,1,3-propanediamine,and glucose as the raw materials,a novel glycosyl surfactants(C12-2N-Glu)containing amide group and secondary amine groups was successfully synthe-sized through esterification,amine ester exchange and reduced amination reactions.Its structure was char-acterized by FTIR,1H NMR and ESI-MS to demonstrate its purity.The surface activity of the surfactant was tested by a surface tension meter.The results showed that the critical micelle concentration and γcmc of the surfactant were 0.26 mmol/L and 30.86 mN/m,respectively,which possessed very good micelle ag-gregation ability and the ability to reduce the surface tension of water.The surfactant has good emulsifica-tion ability.The oil-in-water emulsions stabilized by C12-2N-Glu can be stored at room temperature for at least one month.The emulsions also show sensitive pH responsiveness,indicating their potential applica-tions in smart systems.
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