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Article Dans Une Revue European Polymer Journal Année : 2023

Synthesis of a transesterification vitrimer activated by fluorine from an α,αdifluoro carboxylic acid and a diepoxy

Résumé

An α,α-difluorodicarboxylic acid (P-DAF) was easily synthesized in two steps from diiodobenzene and reacted with a commercial diepoxy (BDGE). The electron-withdrawing effect of the fluorinated group activated the polymerization and gelation readily happened at room temperature. After curing at 150 °C a novel dynamic material was obtained. The P-DAF/BDGE material exhibited a high gel content (94 %) and was able to flow when heated. This material could be successfully reshaped by compression molding under mild conditions (1.5 h at 150 °C). This new material demonstrates that catalyst-free transesterification vitrimers can be prepared from difunctional monomers.

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Dates et versions

hal-03880200 , version 1 (07-12-2022)

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Florian Cuminet, Sylvain Caillol, Éric Dantras, Eric Leclerc, Sébastien Lemouzy, et al.. Synthesis of a transesterification vitrimer activated by fluorine from an α,αdifluoro carboxylic acid and a diepoxy. European Polymer Journal, 2023, 182, pp.111718. ⟨10.1016/j.eurpolymj.2022.111718⟩. ⟨hal-03880200⟩
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