title: Reprocessing and Recycling of Highly Cross-Linked Ion-Conducting Networks through Transalkylation Exchanges of C-N Bonds.
abstract: Exploiting exchangeable covalent bonds as dynamic cross-links recently afforded a new class of polymer materials coined as vitrimers. These permanent networks are insoluble and infusible, but the network topology can be reshuffled at high temperatures, thus enabling glasslike plastic deformation and reprocessing without depolymerization. We disclose herein the development of functional and high-value ion-conducting vitrimers that take inspiration from poly(ionic liquid)s. Tunable networks with high ionic content are obtained by the solvent- and catalyst-free polyaddition of an α-azide-ω-alkyne monomer and simultaneous alkylation of the resulting poly(1,2,3-triazole)s with a series of difunctional cross-linking agents. Temperature-induced transalkylation exchanges of C-N bonds between 1,2,3-triazolium cross-links and halide-functionalized dangling chains enable recycling and reprocessing of these highly cross-linked permanent networks. They can also be recycled by depolymerization with specific solvents able to displace the transalkylation equilibrium, and they display a great potential for applications that require solid electrolytes with excellent mechanical performances and facile processing such as supercapacitors, batteries, fuel cells, and separation membranes.
authors: Université Claude Bernard Lyon 1, INSA de Lyon, Ingénierie des Matériaux Polymères (UMR CNRS 5223), 15 Boulevard Latarjet, Villeurbanne Cedex 69622, France.
authors: Mona M
authors: MM
authors: Obadia
authors: Université Claude Bernard Lyon 1, INSA de Lyon, Ingénierie des Matériaux Polymères (UMR CNRS 5223), 15 Boulevard Latarjet, Villeurbanne Cedex 69622, France.
authors: Bhanu P
authors: BP
authors: Mudraboyina
authors: Université Claude Bernard Lyon 1, INSA de Lyon, Ingénierie des Matériaux Polymères (UMR CNRS 5223), 15 Boulevard Latarjet, Villeurbanne Cedex 69622, France.
authors: Anatoli
authors: A
authors: Serghei
authors: Université Claude Bernard Lyon 1, INSA de Lyon, Ingénierie des Matériaux Polymères (UMR CNRS 5223), 15 Boulevard Latarjet, Villeurbanne Cedex 69622, France.
authors: Damien
authors: D
authors: Montarnal
authors: Université Claude Bernard Lyon 1, INSA de Lyon, Ingénierie des Matériaux Polymères (UMR CNRS 5223), 15 Boulevard Latarjet, Villeurbanne Cedex 69622, France.
authors: Eric
authors: E
authors: Drockenmuller