Surface activation of thin polyvinyl alcohol films by atmospheric pressure plasma jet: Influence of electron temperature

This study investigates the effects of nonthermal plasma characteristics on surface treatments of polyvinyl alcohol with various diagnostics such as Raman spectroscopy, work of adhesion, optical emission spectroscopy, and current–voltage measurements. Our findings demonstrate the importance of contr...

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Bibliographic Details
Published in:Plasma processes and polymers 2023-11, Vol.20 (11)
Main Authors: Lamichhane, Prajwal, Acharya, Tirtha R., Park, JaeWoo, Amsalu, Kirubel A., Park, Byoungchoo, Choi, Eun Ha
Format: Article
Language:English
Subjects:
Electrical measurement
Electron energy
Functional groups
Optical emission spectroscopy
Plasma etching
Plasma jets
Polyvinyl alcohol
Raman spectroscopy
Surface activation
Surface roughness
Surface treatment
Thin films
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Summary:This study investigates the effects of nonthermal plasma characteristics on surface treatments of polyvinyl alcohol with various diagnostics such as Raman spectroscopy, work of adhesion, optical emission spectroscopy, and current–voltage measurements. Our findings demonstrate the importance of controlling the plasma's electron temperature and density to achieve the desired surface treatment outcomes. We show that plasma jets with varying electron temperatures are more appropriate for different surface treatments, with high electron temperatures than 1.1 eV suitable for functional group (C═O) insertion abiding macro‐scale surface roughness and low electron temperatures for plasma etching, which increased surface roughness significantly. Plasma electron temperatures between 1.1 and 1.3 eV are best for treatment as higher ones cause bond breaking while lower ones would etch the surface.
ISSN:1612-8850
1612-8869
DOI:10.1002/ppap.202300102