Characterization of polyethylene surfaces heated after plasma fluorination

✍ Scribed by Jama, C.; Quensierre, J.-D.; Gengembre, L.; Moineau, V.; Grimblot, J.; Dessaux, O.; Goudmand, P.

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 160 KB
• Volume: 27
• Category: Article
• ISSN: 0142-2421
• DOI: 10.1002/(sici)1096-9918(199907)27:7<653::aid-sia556>3.0.co;2-0

✦ Synopsis

Plates of polyethylene with ultrahigh molecular weight (PEUHMW) were treated by radiofrequency capacitive plasma discharge in order to incorporate Ñuorinated functional groups. The consequences of subsequent CF 4 heating treatments after Ñuorination were investigated by the combined use of angle-resolved XPS characterizations and measurements of surface free energy

The temperature range explored covers the zone from room c s . temperature to 240 ÄC. After the plasma treatments, the incorporation of groups at the surface of CF 4 CF x PEUHMW induces a decrease of the value. Further thermal treatments lead to modiÐcations of the chemical c s surface composition and of

The most important changes concern a signiÐcant increase of the surface free c s . energy, where the contribution of the dispersive component is the most a †ected, and a decrease of the F/C ratio. The Ñuorine departure is caused by chain scission in the polymer and is accompanied by a surface oxidation, as revealed by the O 1s peak intensity increase.