Thermodynamics of the Interaction between Crystal Violet and Aerosol OT in Aerosol OT/Isooctane/Water Microemulsion
CHEN Zhi-Yun1, ZHAO Ji-Hua1, AN Xue-Qin a,2, SHEN Wei-Guo*,1,3
(1 Department of Chemistry, Lanzhou University, Lanzhou 730000) (2 College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097) (3 Department of Chemistry, East China University of Science and Technology, Shanghai 200237)
Abstract：The absorbance measurements of CV (4,4',4''-tris(dimethylamino)triphenylmethyl chloride or crystal violet) in W/O microemulsions with surfactant sodium bis(2-ethylhexyl)sulfosuccinate (Aerosol OT, AOT) at various temperatures have been carried out by the UV-Vis spectrophotometer. An association model has been used to analyze the experimental data to obtain the association constant of CV and AOT at various temperatures. It was estimated that about up to 73% CV was associated by AOT, which resulted in a significant reduction of the effective concentration of CV and retarded the reaction of alkaline fading of CV in the microemulsion. The values of thermodynamics functions of association ΔrGm, ΔrHm and ΔrSm have also been calculated from the association constants at various temperatures.
陈志云,赵继华,安学勤,沈伟国. AOT/异辛烷/水微乳液中结晶紫与AOT相互作用的热力学研究[J]. 化学学报, 2006, 64(9): 858-862.
CHEN Zhi-Yun, ZHAO Ji-Hua, AN Xue-Qin a,2, SHEN Wei-Guo*,1,3. Thermodynamics of the Interaction between Crystal Violet and Aerosol OT in Aerosol OT/Isooctane/Water Microemulsion. Acta Chimica Sinica, 2006, 64(9): 858-862.