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A Process for Polymerizing Vinyl Phosphonic Acid with C 6 F 13 I Perfluoroalkyl Iodide Chain‐Transfer Agent
Author(s) -
David Ghislain,
Boyer Cyrille,
Tayouo Russell,
Seabrook Shane,
Ameduri Bruno,
Boutevin Bernard,
Woodward Gary,
Destarac Mathias
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700391
Subject(s) - telomerization , chemistry , anhydrous , iodide , polymer chemistry , polymerization , intermolecular force , chain transfer , oligomer , iodine , radical polymerization , molecule , organic chemistry , polymer , catalysis
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 · mol −1 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 C 6 F 13 I to VPA was found to be 3.4 at 70 °C and 4.3 at 80 °C. This high value may be partially explained by a low k p 2 / k t ratio, which suggests a low k p . The oligomeric structures showed a relatively high resistance to thermal degradation.