Effect of a short chain alcohol on activity and spreading performance of a superspreading trisiloxane surfactant

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43933047" target="_blank" >RIV/60461373:22340/25:43933047 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S000925092500404X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S000925092500404X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ces.2025.121581" target="_blank" >10.1016/j.ces.2025.121581</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of a short chain alcohol on activity and spreading performance of a superspreading trisiloxane surfactant

Popis výsledku v původním jazyce

This study examines the effect of short chain alcohols on the spreading of aqueous solutions of a superspreading trisiloxane surfactant on a polymeric substrate. In the absence of alcohol, fast spreading (superspreading) was observed with the spread area being proportional to time. An increase of alcohol concentration resulted in a slowing down of the spreading kinetics. The spreading exponent reached 0.25 at 0.05 mol fraction of 1-propanol; this value is close to that observed for the spreading of pure liquids. This behaviour was explained by a decrease of surfactant activity in the presence of alcohol and by much faster adsorption of the alcohol on the expanding surface leading to a considerable decrease of the Marangoni stresses near the leading edge of spreading. The obtained results confirm the importance of Marangoni stresses in surfactant enhanced spreading and have potential for controlling the spreading rate of aqueous formulations on hydrophobic surfaces.

Název v anglickém jazyce

Effect of a short chain alcohol on activity and spreading performance of a superspreading trisiloxane surfactant

Popis výsledku anglicky

This study examines the effect of short chain alcohols on the spreading of aqueous solutions of a superspreading trisiloxane surfactant on a polymeric substrate. In the absence of alcohol, fast spreading (superspreading) was observed with the spread area being proportional to time. An increase of alcohol concentration resulted in a slowing down of the spreading kinetics. The spreading exponent reached 0.25 at 0.05 mol fraction of 1-propanol; this value is close to that observed for the spreading of pure liquids. This behaviour was explained by a decrease of surfactant activity in the presence of alcohol and by much faster adsorption of the alcohol on the expanding surface leading to a considerable decrease of the Marangoni stresses near the leading edge of spreading. The obtained results confirm the importance of Marangoni stresses in surfactant enhanced spreading and have potential for controlling the spreading rate of aqueous formulations on hydrophobic surfaces.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

CHEMICAL ENGINEERING SCIENCE

ISSN

0009-2509

e-ISSN

1873-4405

Svazek periodika

311

Číslo periodika v rámci svazku

March 2025

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

nestránkováno

Kód UT WoS článku

001459424800001

EID výsledku v databázi Scopus

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