新型阴离子Gemini表面活性剂与CTAB的复配性能研究

Complex Performance of Novel Anionic Gemini Surfactant with Cetyltrimethylammonium Bromide

利用滴体积法研究了30℃时新型阴离子Gemini表面活性剂(C6-G)与CTAB复配体系的相互作用。结果表明:C6-G/CTAB复配体系在配比为0.3∶0.7时cmc达最小值2.02×10-5 mol/L,配比为0.5∶0.5时γcmc达最小值26.1 mN/m;所有C6-G/CTAB复配体系在降低表面张力的效率和形成胶束的能力方面存在协同效应;配比为0.7︰0.3时在降低表面张力的能力方面存在协同效应。

Interaction of mixed system of novel anionic Gemini surfactant （C6-G） and cetyltrimethylammonium bromide （CTAB） were studied by drop volume method at 30 ℃. The results show that cmc of C6-G/CTAB mixture reaches the minimum of 2.02x 10^-5 mol/L at the ratio of 0.3 ： 0.7, and the minimum Yc,,,c is 26.1 mN/m at the ratio of 0.5 ： 0.5. All the C6-G/CTAB mixtures exhibit synergism in both surface tension reduction efficiency and mixed micelle fomlation and exhibit synergism in surface tension reduction effectiveness at the ratio of 0.7 ： 0.3.