Abstract
To address the challenge of metal contamination, a light initiated radical chain transfer reaction for the controlled hydrogenation of poly(vinylidene fluoride-co-chlorotrifluoroethylene) (P(VDF-CTFE)) using Tris(trimethylsilyl)silane ((Me3Si)3SiH) is presented. Assisted by light, (Me3Si)3SiH is decomposed into (Me3Si)3Si and H radicals. Cl atoms in CTFE are removed by the (Me3Si)3Si radical and the formed macromolecular radicals would abstract H radicals from (Me3Si)3SiH to generated TrFE units. The generated (Me3Si)3Si would repeatedly remove Cl atoms on P(VDF-CTFE) until all the (Me3Si)3SiH is consumed. By employing this method, high temporal control of the CTFE conversion is achieved. The (Me3Si)3SiH reducing system has been demonstrated to be an environmentally friendly, controllable, metal-free and mild process to synthesize a trifluoroethylene (TrFE) containing fluoropolymer, which has glorious prospects for the synthesis of ferrorelectric fluoropolymers.
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