【摘要】 研究以月桂酰甘氨酸钠(C₁₂Gly Na)为主表面活性剂构筑微乳，及微乳对复杂油污的去除性能。结果表明，C₁₂Gly Na与正丁醇组合是比较适宜的乳化剂，可乳化烷烃、脂肪酸异丙酯等多种非极性和极性油形成微乳，烷烃为油相的微乳在相图中之面积总体比脂肪酸异丙酯为油相的高出约42.7%，其中C₁₂Gly Na-正丁醇-正辛烷-H₂O（K_n=0.09）微乳区面积占比最大，约37.1%；在乳化剂与油相质量比为9:1的稀释线上，随着水含量增加，微乳按照油包水、双连续和水包油的顺序渐次演变，且水包油型微乳中油滴的粒径逐次减小；水包油型微乳去除硅胶练习皮表面口红的去污率比相应浓度的C₁₂Gly Na胶束溶液高出约292%，不仅如此，对人体手背皮肤表面的口红和眼线笔污渍的去除效果也优于相应浓度的C₁₂Gly Na胶束溶液。更多还原

【Abstract】 The preparation of microemulsions with sodium lauryl glycine(C12GlyNa) as the surfactant and the removal performance of the resultant microemulsions on complex oily stains were studied. The results show that the combination of C12GlyNa and butanol is a suitable emulsifier, which can emulsify a variety of non-polar and polar oils such as alkanes and isopropyl fatty acids to form C12GlyNa-based microemulsions. In the phase diagram, the area of the microemulsion with alkanes as the oil phase is 42.7% higher than that of the fatty acid isopropyl ester as the oil phase, and the area of the C12GlyNa-butanol-octane-H2O(Kn=0.09) microemulsion is the largest, about 37.1%. Along the dilution line at the emulsifier to oil phase mass ratio of 9:1, the microemulsion type gradually evolves in the order of water-in-oil(W/O), bicontinuous(B.C.) and oil-in-water(O/W) with the increase of water content, and the particle size of oil droplets in the O/W type microemulsion decreases successively. The O/W type C12GlyNa-based microemulsion removed 292% more lipstick from the surface of silicone practice skin than a C12GlyNa micellar solution with the same concentration of surfactant. In addition, in the case of lipstick and eyeliner stains on human hand surfaces, the O/W C12GlyNa-based microemulsion was also found to remove the stains better than the corresponding concentration of C12GlyNa micellar solution.更多还原