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Room Temperature Defluorination of Poly(tetrafluoroethylene) by a Magnesium Reagent.

ABSTRACT: Perfluoroalkyl substances (PFAS) are pervasive in the environment. The largest single use material within the PFAS compound class is poly(tetrafluoroethylene) (PTFE), a robust and chemically resistant polymer. Despite their widespread use and serious concerns about their role as pollutants, methods for repurposing PFAS are rare. Here we show that a nucleophilic magnesium reagent reacts with PTFE at room temperature, generating a molecular magnesium fluoride which is easily separated from the surface-modified polymer. The fluoride in turn can be used to transfer the fluorine atoms to a small array of compounds. This proof-of-concept study demonstrates that the atomic fluorine content of PTFE can be harvested and reused in chemical synthesis.

SUBMITTER: Sheldon DJ

PROVIDER: S-EPMC10197119 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature

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Room Temperature Defluorination of Poly(tetrafluoroethylene) by a Magnesium Reagent.

Sheldon Daniel J DJ Parr Joseph M JM Crimmin Mark R MR

Journal of the American Chemical Society 20230508 19

Perfluoroalkyl substances (PFAS) are pervasive in the environment. The largest single use material within the PFAS compound class is poly(tetrafluoroethylene) (PTFE), a robust and chemically resistant polymer. Despite their widespread use and serious concerns about their role as pollutants, methods for repurposing PFAS are rare. Here we show that a nucleophilic magnesium reagent reacts with PTFE at room temperature, generating a molecular magnesium fluoride which is easily separated from the sur ...[more]

PMID: 37154713

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