Effects of the dispersed droplet sizes on the critical behavior of pseudobinary microemulsion  

作　　者：CAI HongLan AN XueQin SHEN WeiGuo 

机构地区：[1]Department of Chemistry, Lanzhou University, Lanzhou 730000, China [2]College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097, China [3]Department of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

出　　处：《Chinese Science Bulletin》2007年第8期1139-1141,共3页

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)

摘　　要：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.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 exponents ,6 for 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 increases with increasing the dispersed droplet sizes.

关 键 词：伪二元微乳液 分散微滴大小 临界行为 振幅 

分 类 号：O648.23[理学—物理化学]