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甜菜碱型两性表面活性剂在多元络合物中的应用,目前报导尚不多。本文在比较4种甜菜碱型两性表面活性剂的基础上,着重研究了钪-铬天青S-溴化十四烷基羧甲基二甲铵-乙醇四元体系形成的绿色络合物,并作了一系列条件实验。该络合物在pH6.2—7.5时最大吸收波长为607nm,表观摩尔吸光系数达2.34×10~5。值得提及的是乙醇的加入,不仅络合物的灵敏度得到提高,最大吸收波长也发生变化,说明乙醇参与反应。经测定其组成比为钪:铬天青S:溴化十四烷基羧甲基二甲铵:乙醇=1:2:4:5。氧化钪
Betaine amphoteric surfactants in the application of multiple complexes, the current report is not yet much. In this paper, based on the comparison of four kinds of betaine amphoteric surfactants, the green complexes formed by scandium-chromium azure S-tetradecyl carboxymethyl dimethylammonium bromide-ethanol quaternary system were studied emphatically. And made a series of conditional experiments. The maximum absorption wavelength of the complex at pH 6.2-7.5 was 607nm, and the apparent molar absorptivity reached 2.34 × 10 ~ 5. It is worth mentioning that the addition of ethanol, not only the sensitivity of the complex is improved, the maximum absorption wavelength also changes, indicating that ethanol involved in the reaction. The composition ratio was determined as scandium: chrome azure S: tetradecyl carboxymethyl dimethyl ammonium bromide: ethanol = 1: 2: 4: 5. Scandium oxide