Science· 2017Q1
High-performance vitrimers from commodity thermoplastics through dioxaborolane metathesis
- 1,363citations
- Q1SCImago
- 2017year
Short summary
A new dioxaborolane metathesis reaction enables the creation of vitrimers from common plastics like PMMA, polystyrene, and HDPE, allowing them to be repeatedly processed via extrusion or injection molding while retaining superior chemical resistance and dimensional stability.
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Key points
- Developed a dioxaborolane metathesis reaction for creating vitrimers from commodity thermoplastics.
- Successfully produced vitrimers from poly(methyl methacrylate), polystyrene, and high-density polyethylene.
- Vitrimers can be processed multiple times using extrusion or injection molding.
- Materials demonstrate superior chemical resistance and dimensional stability.
- The strategy is applicable to polymers with carbon-carbon single bond backbones.
AI-generated from the title and abstract; the full text is not read.
Abstract
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.
The authors' abstract, as published at the source. Science, 2017 · DOI ↗
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Field: Organic Chemistry
Organic ChemistryChemistry