The investigation of the polymerization of 2,3,4,5,6-pentafluorostyrene in the presence of 2-cyano-2-propyl-dithiobenzoate by 1H NMR spectroscopyстатья
Аннотация:The radical polymerization of 2,3,4,5,6-pentafluorostyrene (PFS) in the presence of 2-cyano-2-propyl-dithiobenzoate (CPDB) at 50 ° C in DMF-d7 was investigated in situ using 1H-NMR spectroscopy. It was established that polymerization occurred with an induction period, which can be due to the formation of a product of selective addition of CPDB and single PFS even before the propagation reaction. For the first time, the chain transfer constant Ctr of CPDB in the polymerization of PFS was estimated. The resulting value of Ctr (Ctr = 77.4 2.2) indicates that CPDB is effective chain transfer agent at polymerization of PFS.
