【摘要】 实验就不同浓度的十二烷基三甲基溴化铵(DTAB)水溶液与十六烷之间的界面张力进行定量的测量,分析了表面活性剂DTAB的浓度与水-十六烷界面张力大小之间的关系。并对表面活性剂在油水界面的作用行为进行分析,得到了30℃下水-十六烷体系中DTAB的cm c值,该值显著低于其在水-空气体系中的cm c值。DTAB在该cm c值附近显著降低了水-十六烷界面张力。更多还原

【Abstract】 Our experiment tests the interfacial tension between different concentration of DTAB and hexadecane,and also analyzes the relationship between the concentration of surfactant and the water-hexadecane interfacial tension.The paper also analyzes effect of surfactant on the interface of oil-water,and finds the cmc of DTAB in hexadecane-water system under 30℃.The cmc is much lower than that in water-air system,and the interfacial tension of water-hexadecane system was reduced obviously with DTAB.更多还原