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

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 in...

Full description

Saved in:
Bibliographic Details
Published in:Macromolecular chemistry and physics 2008-01, Vol.209 (1), p.75-83
Main Authors: David, Ghislain, Boyer, Cyrille, Tayouo, Russell, Seabrook, Shane, Ameduri, Bruno, Boutevin, Bernard, Woodward, Gary, Destarac, Mathias
Format: Article
Language:English
Subjects:
Applied sciences
Chemical Sciences
Exact sciences and technology
kinetics
Organic polymers
perfluoroalkyl compounds
Physicochemistry of polymers
Polymerization
Polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
radical transfer reactions
vinyl phosphonic acid
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 C6F13I 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 p2/kt ratio, which suggests a low kp. The oligomeric structures showed a relatively high resistance to thermal degradation.
ISSN:1022-1352
1521-3935
DOI:10.1002/macp.200700391