文献类型：期刊文献

英文题名：The measurements of coexistence curves and light scattering for {xC₆H₅CN+(1-x)CH₃(CH₂)₁₀CH₃} in the critical region

作者：Mao, Chunfeng[1];Wang, Nong[1,4];Peng, Xuhong[1];An, Xueqin[1,3];Shen, Weiguo[1,2]

机构：[1]Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 2002237, Peoples R China;[3]Nanjing Normal Univ, Coll Chem & Environm Sci, Nanjing 210097, Peoples R China;[4]Lanzhou Jiaotong Univ, Sch Chem & Biol Engn, Lanzhou 730070, Peoples R China

年份：2008

卷号：40

期号：3

起止页码：424

外文期刊名：JOURNAL OF CHEMICAL THERMODYNAMICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000256444100010)】；

语种：英文

外文关键词：critical phenomena; coexistence curve; light scattering; correlation length; osmotic compressibility; benzonitrile; dodecane; crossover phenomena

摘要：The coexistence curves and light scattering data for a critical solution of (benzonitrile + dodecane) have been reported. The critical exponents relating to the difference in density variables of two coexisting phases beta, the correlation length nu, and the osmotic compressibility gamma have been determined. The experimental results of the coexistence curves have also been analyzed to examine the Wegner correction terms and the behavior of the diameter of the coexistence curves. The data analysis shows that the 3D-Ising behavior is valid in a temperature range close to the critical point. However, in a wide temperature range the exponential values of nu and gamma change with the temperature sipificantly, clearly exhibiting the critical crossover from the 3D-Ising universality class to the classical one. (c) 2007 Elsevier Ltd. All rights reserved.