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dc.contributor.author
Chatzigiannakis, Emmanouil
dc.contributor.author
Veenstra, Peter
dc.contributor.author
ten Bosch, Dick
dc.contributor.author
Vermant, Jan
dc.date.accessioned
2020-11-13T09:50:47Z
dc.date.available
2020-10-12T12:35:54Z
dc.date.available
2020-10-13T07:51:51Z
dc.date.available
2020-11-13T09:50:47Z
dc.date.issued
2020-11-07
dc.identifier.issn
1744-683X
dc.identifier.issn
1744-6848
dc.identifier.other
10.1039/d0sm00784f
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/445509
dc.identifier.doi
10.3929/ethz-b-000445509
dc.description.abstract
The dynamics of thin films containing polymer solutions are studied with a pressure-controlled thin film balance. The setup allows the control of both the magnitude and the sign as well as the duration of the pressure drop across the film. The process of coalescence can be thus studied by mimicking the evolution of pressure during the approach and separation of two bubbles. The drainage dynamics, shape evolution and stability of the films were found to depend non-trivially on the magnitude and the duration of the applied pressure. Film dynamics during the application of the negative pressure step are controlled by an interplay between capillarity and hydrodynamics. A negative hydrodynamic pressure gradient promoted the thickening of the film, while the time-dependent deformation of the Plateau border surrounding it caused its local thinning. Distinct regimes in film break-up were thus observed depending on which of these two effects prevailed. Our study provides new insight into the behaviour of films during bubble separation, allows the determination of the optimum conditions for the occurrence of coalescence, and facilitates the improvement of population balance models.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Royal Society of Chemistry
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc/3.0/
dc.subject
Coalescence
en_US
dc.subject
Thin film
en_US
dc.subject
Polymer solution
en_US
dc.title
Mimicking coalescence using a pressure-controlled dynamic thin film balance
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial 3.0 Unported
dc.date.published
2020-08-05
ethz.journal.title
Soft Matter
ethz.journal.volume
16
en_US
ethz.journal.issue
41
en_US
ethz.pages.start
9410
en_US
ethz.pages.end
9422
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02160 - Dep. Materialwissenschaft / Dep. of Materials::02646 - Institut für Polymere / Institute of Polymers::09482 - Vermant, Jan / Vermant, Jan
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02160 - Dep. Materialwissenschaft / Dep. of Materials::02646 - Institut für Polymere / Institute of Polymers::09482 - Vermant, Jan / Vermant, Jan
en_US
ethz.date.deposited
2020-10-12T12:36:04Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-11-13T09:51:01Z
ethz.rosetta.lastUpdated
2021-02-15T20:45:04Z
ethz.rosetta.versionExported
true
ethz.COinS
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