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考察了非离子型表面活性剂烷基糖苷(APG)和两性表面活性剂十二烷基甜菜碱(BS-12)之间的复配性能,测定了不同摩尔比的APG和BS-12复配体系的表面张力、泡沫和乳化性能,并且研究了无机盐对复配体系表面活性的影响。结果表明,与单独任一表面活性剂体系相比,APG和BS-12复配体系具有较好的表面活性,呈现明显的协同增效作用;在摩尔比为3∶7时,复配体系的表面活性最高、起泡性能最好、形成的泡沫和乳状液最稳定,协同增效作用最显著。此外,无机盐的加入提高了复配体系的表面活性,当NaCl浓度为0.03 mol·L-1时,表面张力和临界胶束浓度最小,表面活性最高;而对于无机盐,其离子价态越高,提高表面活性程度越明显;相比之下,阳离子提高复配体系表面活性的能力大于阴离子。
The complexation properties between nonionic surfactant alkyl glucoside (APG) and amphoteric surfactant dodecyl betaine (BS-12) were investigated. The effects of molar ratio of APG to BS-12 The surface tension of the system, foam and emulsifying properties, and the effect of inorganic salts on the surface activity of the compounding system was studied. The results showed that APG and BS-12 had better surface activity than any of the other surfactants alone, showing a synergistic effect. When the molar ratio was 3: 7, The highest surface activity, the best foaming performance, the formation of the most stable foam and emulsion, the most significant synergistic effect. In addition, the addition of inorganic salt increased the surface activity of the complex system. When the concentration of NaCl was 0.03 mol·L-1, the surface tension and the critical micelle concentration were the lowest and the surface activity was the highest. For inorganic salts, High, increasing the degree of surface activity the more obvious; In contrast, cations to increase the surface activity of the complex system with greater capacity than the anion.