title: Three-dimensional observation of an immiscible polymer blend subjected to a step electric field under shear flow.
abstract: We have investigated the structural change of an immiscible blend consisting of two polymers with equal viscosity subjected to a step electric field under shear flow. During the process, three-dimensional images were successfully acquired with a confocal scanning laser microscope, and at the same time, the transient shear stress was also measured. From the images, the interface tensor was calculated. In a blend of polymers with equal viscosity, the total shear stress may consist of the viscous, interfacial, and electric stresses. An experiment was performed to separate these stresses, and the results are discussed in terms of the interface tensor.
authors.affiliation: Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan. orihara@eng.hokudai.ac.jp
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Orihara
authors.forename: Yuki
authors.initials: Y
authors.lastname: Nishimoto
authors.forename: Kohei
authors.initials: K
authors.lastname: Aida
authors.forename: Yang Ho
authors.initials: YH
authors.lastname: Na