Phase behavior of scCO2 microemul- sion formed with food grade surfactant sodium bis-(2-ethylhexyl) sulfosuccinate (AOT) was studied Critical microemulsion concentration (cμc) was de- duced from the dependence of pre...Phase behavior of scCO2 microemul- sion formed with food grade surfactant sodium bis-(2-ethylhexyl) sulfosuccinate (AOT) was studied Critical microemulsion concentration (cμc) was de- duced from the dependence of pressure of cloud points on the concentration of surfactant AOT at con- stant temperature and water concentration. The re- sults show that there are transition points on the cloud point curve in a very narrow range of concen- tration of surfactant AOT. The transition points were changed with the temperature and water concentra- tion. These phenomena show that lower temperature is suitable to forming microemulsion droplet and the microemulsion with high water concentration is likely to absorb more surfactants to structure the interface.展开更多
The critical behavior of pseudobinary microemulsion systems{water/sodium di(2-ethylhexyl)sulfo- succinate(AOT)/n-decane}with various droplet sizes was studied by measurements of refractive index. It was found that the...The critical behavior of pseudobinary microemulsion systems{water/sodium di(2-ethylhexyl)sulfo- succinate(AOT)/n-decane}with various droplet sizes was studied by measurements of refractive index. It was found that the critical exponentsβfor all systems approach 0.327 in a region sufficiently close to the critical temperature,which is consistent with 3D-Ising universality class.The critical temperatures linearly decrease as the dispersed droplet sizes increase.The critical amplitude almost linearly in- creases with increasing the dispersed droplet sizes.展开更多
基金This work was supported by the National Natural Science Foundation of China （Grant Nos. 20573056, 20473035 and 20273032）the New Technique Foundation of Jiangsu Province （Grant No. BG-2005041）.
文摘Phase behavior of scCO2 microemul- sion formed with food grade surfactant sodium bis-(2-ethylhexyl) sulfosuccinate (AOT) was studied Critical microemulsion concentration (cμc) was de- duced from the dependence of pressure of cloud points on the concentration of surfactant AOT at con- stant temperature and water concentration. The re- sults show that there are transition points on the cloud point curve in a very narrow range of concen- tration of surfactant AOT. The transition points were changed with the temperature and water concentra- tion. These phenomena show that lower temperature is suitable to forming microemulsion droplet and the microemulsion with high water concentration is likely to absorb more surfactants to structure the interface.
基金Supported by the National Natural Science Foundation of China(Grant Nos.20673059,20273032,20473035 and 20573056)the New Technique Foundation of Jiangsu Province,China(Grant No.BG-2005041)and the Special Sustentation Fundof Nanometer Technology of Shanghai City,China(Grant No.0652nm010)
文摘The critical behavior of pseudobinary microemulsion systems{water/sodium di(2-ethylhexyl)sulfo- succinate(AOT)/n-decane}with various droplet sizes was studied by measurements of refractive index. It was found that the critical exponentsβfor all systems approach 0.327 in a region sufficiently close to the critical temperature,which is consistent with 3D-Ising universality class.The critical temperatures linearly decrease as the dispersed droplet sizes increase.The critical amplitude almost linearly in- creases with increasing the dispersed droplet sizes.
