Conversion of poly(ethylene-alt-tetrafluoroethylene) copolymers into polytetrafluoroethylene by direct fluorination: A convenient approach to access new properties at the ETFE surface

Gérard Calleja, Axel Houdayer, Sylvie Etienne-Calas, David Bourgogne, Valérie Flaud, Gilles Silly, Sota Shibahara, Atsushi Takahara, Alex Jourdan, André Hamwi, Bruno Ameduri

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Direct fluorination of poly(ethylene-alt-tetrafluoroethylene) copolymer (ETFE) was carried out on commercially available ETFE films with pure fluorine gas at ambient atmosphere. Reaction temperature was either 95 °C or 150 °C and exposure time was 20 hours. Analysis of the fluorinated samples was performed by attenuated total reflection Fourier transform Infrared, confocal micro-Raman and 1H and 19F magic angle spinning nuclear magnetic resonance spectroscopies, scanning electron microscopy, electron diffraction and X-Ray photoelectron spectroscopies, contact angle determination, atomic force microscopy and nanoindentation measurements, and compared to those of the virgin ETFE copolymer. Integrity of the bulk materials was verified by investigating the thermal behavior of the polymers by thermogravimetric analysis and differential scanning calorimetry. Evidence for the formation of a homogeneous layer of polytetrafluoroethylene with a thickness of several microns at the surface of the copolymers with no degradation of the materials was observed.

Original languageEnglish
Pages (from-to)1517-1527
Number of pages11
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume49
Issue number7
DOIs
Publication statusPublished - Apr 1 2011

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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