Location of Repository

NEW FLUORINATED POLYMERS BEARING PENDANT PHOSPHONIC GROUPS FOR FUEL CELL MEMBRANES. PART 1 SYNTHESIS AND CHARACTERIZATIONS OF THE FLUORINATED POLYMERIC BACKBONE

By Russell Tayouo, Ghislain David and Bruno Améduri

Abstract

Radical copolymerizations of chlorotrifluoroethylene (CTFE) with vinyl ethers such as 2-chloroethyl vinyl ether (CEVE) and ethyl vinyl ether (EVE) were performed at 75 °C in the presence of peroxide initiator. Three copolymers were obtained and characterized by means of both NMR and elemental analysis. Then, the chlorine atoms in the side chains were converted into iodine atoms by nucleophilic substitution, which was monitored by 1 H NMR spectroscopy. A series of five copolymers with different amounts of iodine atoms in the side chains were thus obtained. These copolymers exhibited molecular weight values of about 25,000 g.mol-1, and the thermal analysis of the copolymers showed a starting degradation from about 220 °C. The Tg values were in the range of 34 to 41 °C and showed a linear dependance versus the content of iodine atoms.

Year: 2010
OAI identifier: oai:CiteSeerX.psu:10.1.1.413.8554
Provided by: CiteSeerX
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://citeseerx.ist.psu.edu/v... (external link)
  • http://hal.archives-ouvertes.f... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.