title: Surface potential of 1-hexanol solution: comparison with methyl isobutyl carbinol.
abstract: Alcohols have an amphiphilic characteristic and are employed in industrial processes to enhance interfacial properties. In this study, the change in surface potential (ΔV) 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.
authors.affiliation: Department of Chemical Engineering, Curtin University, Perth, Western Australia 6845, Australia.
authors.forename: Cuong V
authors.initials: CV
authors.lastname: Nguyen
authors.forename: Chi M
authors.initials: CM
authors.lastname: Phan
authors.forename: Ha M
authors.initials: HM
authors.lastname: Ang
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Nakahara
authors.forename: Osamu
authors.initials: O
authors.lastname: Shibata
authors.forename: Yoshikiyo
authors.initials: Y
authors.lastname: Moroi
mesh_terms: D000388:Air; D004573:Electrolytes / Q000737:chemistry; D000441:Hexanols / Q000737:chemistry*; D008958:Models, Molecular; D000439:Pentanols / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D013500:Surface Tension; D013501:Surface-Active Agents / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D004573:Electrolytes; D000441:Hexanols; D000439:Pentanols; D012996:Solutions; D013501:Surface-Active Agents; D014867:Water; C036260:1-hexanol; C024821:isobutylmethylcarbinol