Stability of Aqueous Film with a Photo-Responsive Surfactant

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Chi Minh Phan¹  Shin-ichi Yusa²  Cuong V. Nguyen¹ 

[1] Department of Chemical Engineering, Curtin University;Department of Applied Chemistry, University of Hyogo

关键词: Surface Tension;    Thin Film Lifetime;    Air/Water Interface;    Photo-Responsive Surfactant;   

DOI  :  10.1252/jcej.15we290

来源: Maruzen Company Ltd

【 摘 要 】

References(31)Cited-By(1)A cationic azobenzene-containing surfactant, which can be converted reversibly from a cis to a trans conformation, was synthesized. A single liquid thin film containing this surfactant was studied under different light conditions to provide new insights into the foaming behavior of the surfactant. The stability of the thin film was quantified in terms of lifetime and tensile strength. It was found that the lifetime of the thin liquid film was dramatically increased, from a few minutes to a few hours, by UV irradiation regardless of the initial trans/cis fraction. In contrast, the film tension changed insignificantly for all conditions. The obtained results indicated that foaming control by photo-responsive surfactant is driven by the molecular arrangement with the thin aqueous film, rather than the tensile strength. The results provide an important basis for industrial application of the photo-responsive surfactants.

【 授权许可】

Unknown