Modification of polytetrafluoroethylene by electron beam irradiation in various atmospheres
The changes in the chemical structure of polytetrafluoroethylene (PTFE) induced by electron beam irradiation in vacuum and in ammonia gas atmosphere have been investigated by means of Fourier-transform infrared (FTIR) spectroscopy. Double bonds and trifluoromethyl branches are formed by irradiation...
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| Veröffentlicht in: | Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 1999-05, Vol.151 (1), p.222-226 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | The changes in the chemical structure of polytetrafluoroethylene (PTFE) induced by electron beam irradiation in vacuum and in ammonia gas atmosphere have been investigated by means of Fourier-transform infrared (FTIR) spectroscopy. Double bonds and trifluoromethyl branches are formed by irradiation in vacuum. The CF
3 branching is enhanced distinctly by irradiation at elevated temperature above the melting point of PTFE. After irradiation in ammonia gas atmosphere ammonium fluoride salt was detected in the irradiated fluoropolymers. |
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| ISSN: | 0168-583X 1872-9584 |
| DOI: | 10.1016/S0168-583X(99)00115-9 |