Modification of Shape Oscillations of an Attached Bubble by Surfactants

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F13%3A00393230" target="_blank" >RIV/67985858:_____/13:00393230 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/epjconf/20134501095" target="_blank" >http://dx.doi.org/10.1051/epjconf/20134501095</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20134501095" target="_blank" >10.1051/epjconf/20134501095</a>

Result language

angličtina

Original language name

Modification of Shape Oscillations of an Attached Bubble by Surfactants

Original language description

In the experiments, shape oscillations of a bubble are invoked by a motion of a capillary, to which the bubble is injected. Decaying oscillations are recorded and their frequency and damping are evaluated. By changing the excitation frequency, three lowest oscillation modes are studied. Experiments were repeated in aqueous solution of several surfactants at various concentrations. Generally, these features are observed: Initially a surfactant addition leads to an increase of the oscillation frequency; this effect can be attributed to the increasing interfacial elasticity. The decay time of oscillation is strongly decreasing, as a consequence of energy dissipation linked with Marangoni stresses. At a certain critical concentration, frequency decreases abruptly and the decay time passes by a minimum. With further addition of surfactant, frequency decreases, and the decay time slightly lengthens. Above critical micelle concentration, all these parameters stabilize. Interestingly, the crit

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

EPJ Web of Conferences

ISSN

2100-014X

e-ISSN

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Volume of the periodical

45

Issue of the periodical within the volume

2013

Country of publishing house

FR - FRANCE

Number of pages

4

Pages from-to

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UT code for WoS article

000319932200095

EID of the result in the Scopus database

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