Résumé
The radical telomerization of vinylidene fluoride (VDF) with various chain transfer agents (methanol, dialkyl phosphonates, 1-iodoperfluoroalkanes) is presented. ) First, telomerization 1 involves a telogen or a transfer agent (X-Y), and one or more (n) molecules of a polymerizable compound M (called taxogen or monomer), under radical polymerization conditions, leading to X-(M)n-Y telomers, as follows: Various examples of telomerization of vinylidene fluoride, VDF (H2C=CF2) involving different X-Y transfer agents (hydroxylated, phosphonated, halogenated have been investigated. The kinetics of telomerization enabled us to assess the transfer constants to the telogens and an increasing series regarding the efficiency of these transfer agents is supplied, correlated with the bond dissociation energy of the cleavable bond of the telogens: CF3CH2OH