Journal article
Controlling surface properties of electrospun polyphenylsulfone using plasma treatment and X-ray photoelectron spectroscopy
Plasma treatment is an efficient method to modify organic surfaces. In this work electrospun polyphenylsulfone was systematically subjected to low-pressure microwave plasma and atmospheric-pressure coplanar barrier discharge in order to control the surface chemistry, which is important for controlling surface properties.
Polar anchor groups such as keto/aldehyde groups and especially carboxylic acid groups affect hydrophilicity. The composition of plasma-induced chemical anchor groups can be monitored (and thus controlled) by X-ray photoelectron spectroscopy. The atmospheric-pressure plasma provided subtle oxidation, and the low-pressure plasma provided significant oxidation that resulted in polyphenylsulfone surfaces with a very high hydrophilicity.
The low-pressure plasma treated polyphenylsulfone exhibited a significant age effect over 212 days, which was attributed to a diffusion phenomenon where the polyphenylsulfone surface becomes enriched in non-oxidated polyphenylsulfone. It was shown that the improved hydrophilicity will diminish but not vanish in time.
Language: | English |
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Publisher: | Elsevier |
Year: | 2019 |
Pages: | e01943 |
ISSN: | 24058440 |
Types: | Journal article |
DOI: | 10.1016/j.heliyon.2019.e01943 |
ORCIDs: | Stamate, Eugen and Zhang, Wenjing (Angela) |
Analytical chemistry Hydrophilicity Materials science Organic chemistry Physical chemistry Plasma treatment Polyphenylsulfone Surface properties XPS