文献类型：期刊文献

英文题名：Solvent dependent interactions between droplets in water-in-oil microemulsions

作者：Zheng, Peizhu[1];Ma, Yuanming[1];Fan, Dashuang[1];Peng, Xuhong[1];Yin, Tianxiang[2];Zhao, Jihua[1];Shen, Weiguo[1,2]

机构：[1]Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China;[2]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：10

期号：40

起止页码：7977

外文期刊名：SOFT MATTER

收录：;EI(收录号：20144200111524);WOS:【SCI-EXPANDED(收录号:WOS:000344998600009)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 20973061, 21173080, 21373085 and 21303055) and the Fundamental Research Funds for the Central Universities (lzujbky-2014-181).

语种：英文

外文关键词：Light scattering - Microemulsions - Cyclohexane - Polyols - Drops - Paraffins

摘要：In this paper, we investigated the dilution enthalpies of the droplets in water/AOT/oil microemulsions with oil being isooctane, decane, or cyclohexane by isothermal titration microcalorimetry (ITC). Combining with the results obtained from the study of the water/AOT/toluene system in our previous work, it was found that the enthalpy interactions between droplets for isooctane and decane systems were repulsive, while the enthalpy interactions were attractive for cyclohexane and toluene systems. The repulsive droplet interaction for the isooctane system was also confirmed by static light scattering. The solvents appear to play important roles in varying the droplet enthalpy interactions from positive to negative, and the entropy contribution seems to be dominant for the stability of these microemulsion droplet systems.