TY - JOUR
T1 - Drainage of single Plateau borders
T2 - Direct observation of rigid and mobile interfaces
AU - Koehler, Stephan A.
AU - Hilgenfeldt, Sascha
AU - Weeks, Eric R.
AU - Stone, Howard A.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2002/10/9
Y1 - 2002/10/9
N2 - Foam drainage varies with surfactant. We present direct measurements of the flow velocity profiles across single Plateau borders, which make up the interconnected channel-like network for liquid flow. For protein foams the interface is rigid, whereas small-surfactant foams show significant interfacial mobility. The results agree with a model that takes into account the shearing of the liquid-gas interface transverse to the flow direction. A significant consequence is that bubble size and liquid volume fraction in a foam affect the relative importance of surface rheology on the drainage behavior.
AB - Foam drainage varies with surfactant. We present direct measurements of the flow velocity profiles across single Plateau borders, which make up the interconnected channel-like network for liquid flow. For protein foams the interface is rigid, whereas small-surfactant foams show significant interfacial mobility. The results agree with a model that takes into account the shearing of the liquid-gas interface transverse to the flow direction. A significant consequence is that bubble size and liquid volume fraction in a foam affect the relative importance of surface rheology on the drainage behavior.
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U2 - 10.1103/PhysRevE.66.040601
DO - 10.1103/PhysRevE.66.040601
M3 - Article
C2 - 12443164
AN - SCOPUS:41349102932
SN - 1063-651X
VL - 66
SP - 4
JO - Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
JF - Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
IS - 4
ER -