Journal
SCIENCE
Volume 356, Issue 6333, Pages 62-65Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aah5281
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Funding
- Hierarchical Self Assembly of Polymeric Soft Systems (SASSYPOL-ITN) Marie-Curie Network through the European Union 7th Framework Programme (FP7-People-2013-ITN) [607602]
- ESPCI
- CNRS
- PSL
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Windmills, cars, and dental restoration demand polymer materials and composites that are easy to process, assemble, and recycle while exhibiting outstanding mechanical, thermal, and chemical resistance. Vitrimers, which are polymer networks able to shuffle chemical bonds through exchange reactions, could address these demands if they were prepared from existing plastics and processed with fast production rates and current equipment. We report the metathesis of dioxaborolanes, which is rapid and thermally robust, and use it to prepare vitrimers from polymers as different as poly(methyl methacrylate), polystyrene, and high-density polyethylene that, although permanently cross-linked, can be processed multiple times by means of extrusion or injection molding. They show superior chemical resistance and dimensional stability and can be efficiently assembled. The strategy is applicable to polymers with backbones made of carbon-carbon single bonds.
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