Surface modification of polytetrafluoroethylene by methods of laser ablation and ion-plasma exposure

The results of an intermediate meso-layer formation processes study between a PTFE base and a surface layer obtained by preliminary modification of polytetrafluoroethylene with zirconium dioxide, followed by ion-plasma molybdenum sputtering and laser ablation are presented. It was found that doping...

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Bibliographic Details
Main Authors: Poleshchenko, Konstantin, Teplouhov, Andrey, Semenyuk, Natalya, Korotaev, Dmitriy, Ivanova, Elena
Format: Conference Proceeding
Language:English
Subjects:
Chemical activity
Chemical composition
Fluorine
Laser ablation
Molybdenum oxides
Polytetrafluoroethylene
Radiation effects
Surface layers
Zirconium dioxide
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Summary:The results of an intermediate meso-layer formation processes study between a PTFE base and a surface layer obtained by preliminary modification of polytetrafluoroethylene with zirconium dioxide, followed by ion-plasma molybdenum sputtering and laser ablation are presented. It was found that doping with zirconium dioxide makes the structure of polytetrafluoroethylene denser, and the ratio of atomic concentrations of fluorine and carbon decreases by 17%. It indicates a decrease in the number of saturated fluorocarbon bonds in the polymer and leads to a higher chemical activity of polytetrafluoroethylene. Upon surface modification with molybdenum and at laser radiation exposure, a change in the chemical composition towards an increase in the ratio of atomic concentrations of oxygen and molybdenum by 56% is observed on the surface, as well as the formation of close-packed individual particles of molybdenum oxides (Mo6+, Mo5+, Mo4+, Mo3+, Mo2+, Mo1+) from 3 to 15 µm in size were revealed.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0162993