文献类型：期刊文献

英文题名：The critical behavior of {water + AOT + decane} microemulsion with various molar ratios of water to AOT

作者：Cai, Honglan[1,4]; Yi, Chang[2]; An, Xueqin[2,3]; Shen, Weiguo[1,3]

机构：[1] Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China; [2] Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Environment Science, Nanjing Normal University, Nanjing, Jiangsu 210097, China; [3] Department of Chemistry, East China University of Science and Technology, Shanghai, 200237, China; [4] School of Chemistry and Material Science, Ludong University, Yantai, Shandong 264025, China

年份：2009

卷号：41

期号：5

起止页码：639

外文期刊名：Journal of Chemical Thermodynamics

收录：EI(收录号：20091111956575)

语种：英文

外文关键词：Refractive index - Paraffins - Drops

摘要：To examine the critical behavior of the microemulsion, we have determined the coexistence curves for two ternary microemulsion systems of {water + sodium di(2-ethylhexyl) sulfosuccinate (AOT) + n-decane} with the molar ratios ω = (45.2 and 50.0) of water to AOT, respectively, by measuring refractive index at a constant pressure in the critical region. The critical exponent β and the critical amplitude B have been deduced from the coexistence curves. It was found that the values of β for both systems were consistent with the 3D-Ising exponent in a critical region. By increasing ω, i.e. the droplet size, the critical temperature and, to a lesser extent, the critical concentration decrease. The region of coexisting two phases was drastically reduced by an increase in the droplet size. ? 2009 Elsevier Ltd. All rights reserved.