caa a22 4500 378903551 CHVBK 20180305123524.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.1515/epoly.2004.4.1.65 doi (NATIONALLICENCE)gruyter-10.1515/epoly.2004.4.1.65 Surface modification of polyamides by direct fluorination [Elektronische Daten] [Tihomir Solomun, Arnd Schimanski, Heinz Sturm, Renate Mix, Eugen Illenberger] 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 νCO 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. © 2013 by Walter de Gruyter GmbH & Co. Solomun Tihomir Free University Berlin, Institute of Chemistry, Theoretical and Physical Chemistry, Takustr. 3, 14195 Berlin, Germany; Fax +49-30-838-55378 aut Schimanski Arnd Innovent Technologieentwicklung, Pruessingstr. 27b, 07745 Jena, Germany aut Sturm Heinz Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany aut Mix Renate Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany aut Illenberger Eugen Free University Berlin, Institute of Chemistry, Theoretical and Physical Chemistry, Takustr. 3, 14195 Berlin, Germany; Fax +49-30-838-55378 aut e-Polymers De Gruyter 4/1(2004-12-01), 65-80 2197-4586 4:1<65 2004 4 epoly https://doi.org/10.1515/epoly.2004.4.1.65 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/epoly.2004.4.1.65 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Solomun Tihomir Free University Berlin, Institute of Chemistry, Theoretical and Physical Chemistry, Takustr. 3, 14195 Berlin, Germany; Fax +49-30-838-55378 aut NATIONALLICENCE 700 1- Schimanski Arnd Innovent Technologieentwicklung, Pruessingstr. 27b, 07745 Jena, Germany aut NATIONALLICENCE 700 1- Sturm Heinz Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany aut NATIONALLICENCE 700 1- Mix Renate Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany aut NATIONALLICENCE 700 1- Illenberger Eugen Free University Berlin, Institute of Chemistry, Theoretical and Physical Chemistry, Takustr. 3, 14195 Berlin, Germany; Fax +49-30-838-55378 aut NATIONALLICENCE 773 0- e-Polymers De Gruyter 4/1(2004-12-01), 65-80 2197-4586 4:1<65 2004 4 epoly CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter