Details

Autor(en) / Beteiligte

• Heya, Akira
• Otsuka, Hideo
• Sumitomo, Koji

Titel

Surface Modification of Fluoropolymers by Atomic Hydrogen

Ist Teil von

• Journal of Photopolymer Science and Technology, 2023/06/15, Vol.36(4), pp.253-259

Ort / Verlag

Hiratsuka: The Society of Photopolymer Science and Technology(SPST)

Erscheinungsjahr

2023

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The reaction of atomic hydrogen with fluoropolymers was investigated to clarify mechanism of surface modification. The atomic hydrogens were genareted by decomposition of H2 gas on a heated W mesh. We call the surface-tretament atomic hydrogen annealing (AHA). As the AHA treatment time incresed, chemical bonds in polytetrafluoroethylene (PTFE) was changed from -CF2-CF2- to -CH2-CF2-, -CHF-CF2-, and CF3 below 200 ℃. In the fluoropolymer films containing O atoms, named FO, both F and O atoms reacted with atomic hydrogen, however, the F atoms were preferentially removed by AHA compared to O atoms. The comparison with thermal treatment indicates that the surface modification was not due to thermal effect but to chemical reaction of atomic hydrogen such defluorination. From the comparison to soft X-ray irradiation, the AHA modificates the fluoropolymers without excess damage.