Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
1 PublikationMeniscus Asymmetry and Chemo-Marangoni Convection in Capillaries
Eckert, K.; Shi, Q.; Seidel, K.; Schwarzenberger, K.
Abstract
A liquid-liquid system inside a capillary in which an interfacial reaction leads to in situ production of a surfactant was studied experimentally. The resulting chemo-Marangoni convection induces periodic spreading-dewetting cycles in laboratory experiments. By selected experiments in microgravity, the individual phenomena of the system dynamics could be isolated. The spreading-dewetting cycles result from a complex interplay between the decrease in interfacial tension due to the production of surfactant, the chemo-Marangoni convection, and the gravity-driven deformation of the meniscus shape.
Keywords: Capillaries; Interfacial reactions; Marangoni convection; Meniscus deformation; Microgravity
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Chemical Engineering & Technology 40(2017)11, 2067-2074
DOI: 10.1002/ceat.201700154
Cited 2 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-26272