Abstract
Novel telechelic primary dihydroxyl and diacrylate cooligomers based on vinylidene fluoride (VDF) and perfluoromethyl vinyl ether (PMVE) were synthesized as precursors of original photo-cross-linkable networks. First, α,ω-diiodopoly(VDF-co-PMVE) copolymers were generated by iodine transfer copolymerization of VDF and PMVE controlled by 1,4-diiodoperfluorobutane chain transfer agent, leading to cooligomers with molecular weights ranging between 1,500 and 7,000 g·mol–1 with a narrow polydispersity (<1.3). Then, two major approaches were applied to obtain telechelic poly(VDF-co-PMVE) diols as precursors of α,ω-diacrylates that contained spacers of various lengths between the hydroxyl (or ester) functions and the poly(VDF-co-PMVE) oligomeric chain. The first strategy involved a quantitative ethylene end-capping of telechelic diiodo poly(VDF-co-PMVE) cooligomers and subsequent hydrolysis to form diols with one ethylene spacer (C2). The second route to obtain fluorinated macrodiols involved the radical addition...
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