title: Dynamic interfacial dilational properties of hydroxy-substituted alkyl benzenesulfonates.
abstract: Synthesis, characterization, and interfacial properties of hydroxy-substituted alkyl benzenesulfonates, sodium 2-hydroxy-3-decyl-5-octylbenzenesulfonate (C10C8OHphSO3Na) and 2-hydroxy-3-octyl-5-decylbenzenesulfonate (C8C10OHphSO3Na), are reported. The dynamic dilational properties of the surfactants are expounded by means of oscillating the bubble/drop method at both water-air and water-decane interfaces. The distinct maxima appear in dilational modulus vs time curves in some cases, which is believed to be attributed to the change of surfactant conformation and the arrangement of surface layer. Our results show that the measurement of dynamic interfacial dilational properties is a powerful tool to probe the structure of the surfactant adsorption film.
authors.affiliation: Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, No. 2 North 1 Alley, Zhong guan cun, P.O. Box 2711, 61 section, Beijing 100080, People's Republic of China.
authors.forename: Yu-Ping
authors.initials: YP
authors.lastname: Huang
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Lu
authors.initials: L
authors.lastname: Zhang
authors.forename: Lan
authors.initials: L
authors.lastname: Luo
authors.forename: Sui
authors.initials: S
authors.lastname: Zhao
authors.forename: Jia-Yong
authors.initials: JY
authors.lastname: Yu
mesh_terms: D001557:Benzenesulfonates / Q000737:chemistry*; D015394:Molecular Structure; D013816:Thermodynamics
chemical_list: D001557:Benzenesulfonates