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以葡萄糖和烷基胺(正辛胺、十二胺、十六胺)为原料制备了一系列不同链长的糖基双子表面活性剂,以傅里叶红外光谱和核磁共振氢谱表征了产物的结构.采用悬滴法和改进的Ross-Miles法对产物的表面张力、起泡性能进行了测试.结果表明,糖基双子表面活性剂可以将表面张力降低到33.0~38.6 mN/m,其临界胶束浓度在0.07~0.45 mmol/L范围内;同时,产物(A)和(B)具有良好的起泡性和稳泡性.这说明具有独特二聚结构的糖基双子表面活性剂有着更高的降低表面张力的能力和效率,表现出比传统线性表面活性剂优越的表面活性.
A series of glycosylated gemini surfactants with different chain lengths were prepared from glucose and alkylamines (n-octylamine, dodecylamine and hexadecylamine). The products were characterized by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance The surface tension and the foaming property of the product were measured by the hanging drop method and the improved Ross-Miles method.The results showed that the surface tension of glycolated gemini surfactant could be reduced to 33.0-38.6 mN / m The critical micelle concentration was in the range of 0.07-0.45 mmol / L, and the products (A) and (B) had good foaming and foam stability, which indicated that the glycosylated gemini surfactants with unique dimerization structures Higher ability and efficiency to reduce surface tension, exhibit superior surface activity over conventional linear surfactants.