A Process for Polymerizing Vinyl Phosphonic Acid with C6F13I Perfluoroalkyl Iodide Chain-Transfer Agent

Ghislain David (1, 2) , Cyrille Boyer (1) , Russell Tayouo (1) , Shane Seabrook (1) , Bruno Ameduri (1) , B. Boutevin (1) , Gary Woodward (3) , Mathias Destarac (4)

1 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 LSIC - ENSCM - Laboratoire des Systèmes d'Information Chimique
3 Rhodia UK Ltd
4 Rhodia Recherches et Technologies, Centre de Recherches et

The synthesis of oligomeric VPA structures via the CTA perfluorohexyl iodide has been investigated. NMR and MALDI-TOF MS analysis showed that the structures were produced exclusively by radical-transfer reactions. The oligomers had a molecular weight above 2 000 g mol1 and exhibited intra- and intermolecular anhydrous bonding. The investigation showed that the reaction is not a living (controlled) system, but follows conventional radical telomerization. The value for the transfer constant for C6F13I to VPA was found to be 3.4 at 70 8C and 4.3 at 80 8C. This high value may be partially explained by a low k2 p/kt ratio, which suggests a low kp. The oligomeric structures showed a relatively high resistance to thermal degradation.

Domaines: Polymères

Ghislain David, Cyrille Boyer, Russell Tayouo, Shane Seabrook, Bruno Ameduri, et al.. A Process for Polymerizing Vinyl Phosphonic Acid with C6F13I Perfluoroalkyl Iodide Chain-Transfer Agent. Macromolecular Chemistry and Physics, 2007, 208, pp.2382. ⟨10.1002/macp.200700391⟩. ⟨hal-00185784⟩