Interrelation of Carbon Numbers in Microemulsion with Nonionic Surfactant
TENG Hong Ni, SUN Yong, HUANG Bin, KONG Bin, CHEN Zong Qi * (Open Laboratory of Colloid and Interface Chemistry, Shandong University, Jinan, 250100; Department of Applied Chemistry, Instiute of Chemical Technology , Qingdao, 266042)
The interrelation of carbon numbers was studied in microemulsions containing nonionic surfactant, n alcohol, n hydrocarbon and water by construction of pseduo ternary phase diagrams. Mixtures of the surfactant, alcohol and hydrocarbon were titrated at 30 ℃ with water to the points of turbidity and clarity to determine the microemulsion area. The total area of the microemulsion of different types for AEO 9, n alcohol, n hydrocarbon and water reached a maximum value when N O, carbon number of the oil, N O, carbon number plus that of the alcohol, N A, was equal to that of the AEO 9, N S( N S= N O+ N A). The results are discussed theoretically.