烷基酰胺两性表面活性剂的合成研究

合成了十一烷基咪唑啉环的水解产物仲酰胺和叔酰胺,用氯乙酸钠与酰胺化合物反应得到酰胺两表面活性剂,考察其水溶液泡沫高度和表面张力以及共复配物的表面性质,发现叔酰胺的季胺化产品起泡力最大,其γ_(min)与咪唑啉型两性表面活性剂的γ_(min)相近;不同混合比仲酰胺的和叔叔酰胺的季胺化物水溶液的泡沫高度和表面张力没有明显的变化。

STUDY ON SYNTHESIS OF ALKYL AMIDE-AMPHOTERIC SURFACTANTS

The sec-amide and tert-amide, both are main hydrolysis products of undecylimidazoline ring, were synthesized, the amides were reacted with sodium chloroacetate giying alkyl amid-amphoteric surfactants. The foam height, surface tension and surface properties of the solutions and their composites were studied. It was found that the quaternized tertamide exhibit a highest foaming ability, and the γ_(min) is similar to that of imidazoline surfactant; but no significant differences on foam height and γ_(min) were observed between various compositing ratio of quaternized sec-and ten-amides.