Temperature Dependence of Water Contact Angle on Teflon AF1600

In this work, we investigate the change of contact angle (CA) of a water droplet during evaporation on a Teflon AF1600 surface in the temperature range between 20 and 80 °C under standard laboratory conditions. An almost constant initial CA and a significant increase of the stabilized CA have been o...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1999. - 38(2022), 4 vom: 01. Feb., Seite 1631-1637
1. Verfasser: Xiang, Yijie (VerfasserIn)
Weitere Verfasser: Fulmek, Paul, Platz, Daniel, Schmid, Ulrich
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a In this work, we investigate the change of contact angle (CA) of a water droplet during evaporation on a Teflon AF1600 surface in the temperature range between 20 and 80 °C under standard laboratory conditions. An almost constant initial CA and a significant increase of the stabilized CA have been observed. The results reveal a temperature-dependent CA change, mainly due to water adsorption on the solid surface. Soaking experiments indicate that besides adsorption, a temperature-independent friction-like force contributes to the pinning of triple-line and therefore to the CA change. We propose an adsorption coverage parameter and a friction-like force to describe the CA change. Furthermore, we describe a reproducible process to produce smooth and homogeneous Teflon AF1600 thin films, minimizing the influence of roughness and local heterogeneity on the CA 
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700 1 |a Fulmek, Paul  |e verfasserin  |4 aut 
700 1 |a Platz, Daniel  |e verfasserin  |4 aut 
700 1 |a Schmid, Ulrich  |e verfasserin  |4 aut 
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