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    Transient pore dynamics in pH-responsive liquid membrane

    Year: 2012

    Journal: Langmuir 2012, 28 (29) pp 10682-10687, 20121211

    Authors: Takahiko Ban, Tomoko Yamagami, Yuki Furumichi

    Organizations: Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama Toyonaka, Osaka 560-8531, Japan; Department of Chemistry and Chemical Engineering, Yamagata University, 3-16 Jonan 4, Yonezawa 992-8510 Japan; Department of Chemical Engineering & Materials Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto 610-0321 Japan

    We have investigated the transient pore dynamics in a chemically destabilized liquid membrane in buffer solutions at macroscopic scale. A hole opened and closed repeatedly in response to pH in the surrounding media when the concentration of surfactant in the liquid membrane was sufficiently high to form emulsion at equilibrium and the membrane was larger than a critical value. The analysis of pore dynamics allowed us to estimate some physicochemical properties such as membrane tension, line tension, and membrane viscosity.