Surface Modification of Polyamides by Direct Fluorination
- Bulk samples and thin films of polyamides (PA6 and PA12) were exposed to fluorine (1 - 10 vol.-% F2 in N2) and analysed with photoelectron (XPS) and infrared spectroscopy. Fluorination affects both, the amide and the hydrocarbon parts of the polymers. However, only the carbon atom next to the carbonyl is readily fluorinated. Chemical modification of the amide group is apparent in a large binding energy shift (+5 eV) of the N1s level and the appearance of a CO band at 1734 cm-1. It is concluded that the amide C-N bond is cleaved in the fluorination process and that COOH and NF2 end groups are formed. This conclusion is corroborated by the appearance of ester oxygen in the XPS and by the 19F NMR spectra of the volatile products that show fluorine signals chemically shifted about 200 ppm towards lower field as compared with the CHF environment.
Autor*innen: | Tihomir Solomun, A. Schimanski, Heinz SturmORCiD, Renate Mix, E. Illenberger |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | e-Polymers |
Jahr der Erstveröffentlichung: | 2004 |
Herausgeber (Institution): | European Polymer Federation |
Verlag: | De Gruyter |
Verlagsort: | [S.l.] |
Ausgabe/Heft: | 8 |
Erste Seite: | 1 |
Letzte Seite: | 16 |
Freie Schlagwörter: | AFM; Gasfluorierung; IR; NF2-Gruppe; XPS |
URL: | http://www.e-polymers.org |
ISSN: | 1618-7229 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 25.03.2004 |