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Meniscus asymmetry and chemo-Marangoni convection in capillaries (2017)

K. Eckert, Y. Shi, K. Seidel, K. Schwarzenberger

Wiley

In: Chemical Engineering and Technology

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Publication Date: 2017-07-27

Description: We experimentally study a liquid-liquid system inside a capillary in which an interfacial reaction leads to an in-situ production of a surfactant. As a result, a chemo-Marangoni convection appears which 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 of interfacial tension by the production of surfactant, the chemo-Marangoni convection, and the gravity-driven deformation of the meniscus shape.

Print ISSN: 0930-7516

Electronic ISSN: 1521-4125

Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology

Published by Wiley

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