Synthesis of a transesterification vitrimer activated by fluorine from an α, α-difluoro carboxylic acid and a diepoxy. (3rd January 2023)

• Record Type: Journal Article
• Authors: Cuminet, Florian; Caillol, Sylvain; Dantras, Éric; Leclerc, Éric; Lemouzy, Sébastien; Totée, Cédric; Guille, Olivier; Ladmiral, Vincent
• Is Part Of: European polymer journal. Volume 182(2023)
• Publication Date: 2023-01-03
• Subjects: Vitrimer -- Catalyst-free -- Polyester -- Crosslinking -- Difunctional -- Fluorine; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; Polymerization; Polymers; Periodicals; Electronic journals; 547.705
• DOI: 10.1016/j.eurpolymj.2022.111718
• Languages: English
• ISSNs: 0014-3057

Abstract

Graphical abstract: Highlights: An α, α-difluorodicarboxylic acid was synthesized. The reaction of the diacid with a diepoxy led to a 3D network. The polyester material obtained is a catalyst-free vitrimer. Abstract: 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.