BUBBLE MOTION ANOMALIES IN AQUEOUS SOLUTIONS OF SIMPLE ALCOHOLS AND FLUROSURFACTANTS
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F25%3A00642687" target="_blank" >RIV/67985858:_____/25:00642687 - isvavai.cz</a>
Result on the web
<a href="https://www.conftool.net/icmf2025/sessions.php" target="_blank" >https://www.conftool.net/icmf2025/sessions.php</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
BUBBLE MOTION ANOMALIES IN AQUEOUS SOLUTIONS OF SIMPLE ALCOHOLS AND FLUROSURFACTANTS
Original language description
Various anomalies are typical for aqueous solutions of simple alcohols, with viscosity maxima and altering of the bubble surface mobility being significant for multiphase systems. Two properties appear to be key in multiphase applications: i) the amphiphilic nature of the molecule, causing the preferential adsorption of molecules at the liquid–gas phase interface, thus affecting the properties of the interface, and (ii) the existence of strong hydrogen bonds, promoting the formation of structures at the molecular level. If the alcohol concentration increases above a certain limit (critical aggregation concentration (CAC), microstructures on molecular level occur. The presence of microstructures significantly affects the bubble surface mobility, because the adsorption and desorption of alcohol is very fast and no Marangoni flows are formed. This study focuses on solutions of 1-propanol (𝑥𝐶𝐴𝐶=0.07) and perfluorooctanoic acid PFOA (CMC = 9 mmol/l). The aim of this work is to investigate how the presence of a strong surfactant affects the surface properties and mobility of a rising bubble. The method of a single rising bubble in a stagnant liquid and the measurement of dynamic surface tension were chosen to characterize the bubble surface.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/8J24FR012" target="_blank" >8J24FR012: ALCHEMYST: Sustainable Chemical Engineering: reducing energy consumption of gas-liquid contactors by unraveling the effect of ALcohol simple CHains-likE Molecules on bubbles hYdrodynamicS and oxygen Transport phenomena</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů