Surface Potential of 1-Hexanol Solution: Comparison with Methyl Isobutyl Carbinol
Surface Potential of 1-Hexanol Solution: Comparison with Methyl Isobutyl Carbinol
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DOI：
10.1021/jp4027157
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发表时间：
2013-06-27
影响因子：
3.3
通讯作者：
Moroi, Yoshikiyo
中科院分区：
文献类型：
--
作者：
Nguyen, Cuong V.;Phan, Chi M.;Moroi, Yoshikiyo
醇类具有两亲性，在工业过程中用于增强界面性能。在这项研究中，1-己醇的表面电位（Δ V）和表面张力的变化进行了测量的电解质溶液（NaCl在0.02，0.2和2 M）的表面下。结果拟合一个新提出的模型，其中包括在空气-水界面的电解质和表面活性剂的表面浓度的影响。这些结果进行了比较，以前的研究甲基异丁基甲醇（MIBC）。最重要的是，建模结果，显示两个系统之间的相反行为：吸附MIBC增强阳离子的存在，而吸附1-己醇增强阴离子的存在。这种差异突出了分子结构对空气/水界面排列的重要性。
Alcohols have an amphiphilic characteristic and are employed in industrial processes to enhance interfacial properties. In this study, the change in surface potential (Delta V) and surface tension of 1-hexanol were measured on the subsurface of electrolyte solutions (NaCl at 0.02, 0.2, and 2 M). The results were fitted by a newly proposed model, which includes the influence of electrolytes and surface concentration of surfactant at the air-water interface. The findings were compared to those of a previous study on methyl isobutyl carbinol (MIBC). Most significantly, the modeling results, showed opposite behaviors between the two systems: adsorbed MIBC enhances the presence of cations, whereas adsorbed 1-hexanol enhances the presence of anions. The difference highlights the significance of the molecular structure on the arrangement at the air/water interface.