In:
Plasma Processes and Polymers, Wiley, Vol. 19, No. 9 ( 2022-09)
Abstract:
Production of superhydrophobic polytetrafluoroethylene (PTFE) by Ar plasma etching is challenging as it leads to defluorination, resulting in a hydrophilic surface. The effect of radiofrequency power, treatment time, impurity, and surface temperature on Ar plasma‐treated PTFE was investigated for producing a large‐area superhydrophobic PTFE surface. To avoid impurity and substrate temperature effects, a single electrode‐based arrangement with a sacrificial PTFE disc behind the specimen was used for plasma discharge. After 5 min treatment at 100 W, the surface became superhydrophobic (water contact angle = 156°) due to the formation of isotropic nanostructures. However, 30 min of plasma treatment caused severe chemical changes resulting in a hydrophilic surface (water contact angle = 14°). A yellowish layer was formed on the surface due to crosslinking, redeposition of fluorocarbon species, and iron impurities from the plasma system confirmed by X‐ray photoelectron spectroscopy analysis.
Type of Medium:
Online Resource
ISSN:
1612-8850
,
1612-8869
DOI:
10.1002/ppap.202200037
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
2159694-3
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