Contact Properties and Surface Structure of Polypyromellitimide Films Modified by Direct-Current Discharge

The contact properties, chemical structure, and surface morphology of polypyromellitimide films modified at the cathode and anode by dc discharge have been investigated. A significant improvement in wettability and an increase in the work of adhesion, total surface energy, and its polar component, w...

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Bibliographic Details
Published in:High energy chemistry 2021-07, Vol.55 (4), p.313-320
Main Authors: Piskarev, M. S., Zinovev, A. V., Skryleva, E. A., Senatulin, B. R., Gatin, A. K., Kechek’yan, A. S., Karakhanyan, M. A., Gilman, A. B., Kuznetsov, A. A.
Format: Article
Language:English
Subjects:
Adhesion
Atomic force microscopy
Chemistry
Chemistry and Materials Science
Discharge
Morphology
Photoelectrons
Physical Chemistry
Plasma Chemistry
Surface energy
Surface structure
Wettability
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Summary:The contact properties, chemical structure, and surface morphology of polypyromellitimide films modified at the cathode and anode by dc discharge have been investigated. A significant improvement in wettability and an increase in the work of adhesion, total surface energy, and its polar component, which persist for a long time when the films are stored in air under ambient conditions, are shown. The change in the chemical structure of the plasma-modified films has been studied using X-ray photoelectron spectroscopy, and the formation of oxygen- and nitrogen-containing groups on the surface has been revealed. Examination of the films by atomic force microscopy indicates a change in the surface morphology and an increase in its roughness. Modification of films by plasma leads to a significant improvement in their adhesion properties.
ISSN:0018-1439
1608-3148
DOI:10.1134/S001814392104010X