Random and Sequential Radical Cotelomerizations of 3,3,3-Trifluoropropene (TFP, H2C=CHCF3) with Vinylidene Fluoride (VDF, F2C=CH2)

The synthesis of original co-telomers based on 3,3,3-trifluoropropene (TFP) and vinylidene fluoride (VDF) with a general formula: RF-[CH2-CF2]n-[CH2-CH(CF3)]m-I (where n=1-63, m=2-640, and RF=(CF3)2CF) was achieved by sequential and random cotelomerizations in the presence of RFI. The radical cotelomerizations were initiated by thermal decomposition of different peroxide and persulfate initiators either in bulk, in solution (in the presence of acetonitrile or 1,1,1,3,3-pentafluorobutane as the solvents), and in aqueous process (emulsion). Different adducts were obtained in good yield (50-70 wt%) with a relative ha l-0 03 79 26 6, v er si on 1 28 A pr 2 00 9 Author manuscript, published in "Journal of Polymer Science Part A Polymer Chemistry / JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 47 (2009) 3964-3981" DOI : 10.1002/pola.23455