Poly(oxime–ester) Vitrimers with Catalyst-Free Bond Exchange
Open accessAbstract
Vitrimers are network polymers that undergo associative bond exchange reactions in the condensed phase above a threshold temperature, dictated by the exchangeable bonds comprising the vitrimer. For vitrimers, chemistries reliant on poorly nucleophilic bond exchange partners (e.g., hydroxy-functionalized alkanes) or poorly electrophilic exchangeable bonds, catalysts are required to lower the threshold temperature, which is undesirable in that catalyst leaching or deactivation diminishes its influence over time and may compromise reuse. Here we show how to access catalyst-free bond exchange reactions in catalyst-dependent polyester vitrimers by obviating conventional ester bonds in favor of oxime-esters. Poly(oxime-ester) (POE) vitrimers are synthesized using thiol-ene click chemistry, affording high stretchability and malleability. POE vitrimers are readily recycled with little degradation of their initial mechanical properties, suggesting exciting opportunities for sustainable plastics.
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Flagged first, then by citations
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Cited by
Sorted by citations
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- Authors
- He, C., Shi, S., Wang, D., Helms, B. A., & Russell, T. P.
- Affiliations
- Beijing University of Chemical Technology (CN)
- Lawrence Berkeley National Laboratory (US)
- Corresponding author
- Shi, Shaowei
- Wang, Dong
- Russell, Thomas P.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-08-21
- Volume
- 141
- Issue
- 35
- Pages
- 13753-13757
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2969252777
- Cited by
- 229
- References
- 34
- Citations by year
- 2026: 16 · 2025: 27 · 2024: 39 · 2023: 42 · 2022: 40 · 2021: 32 · 2020: 32 · 2019: 1
- FWCI
- 11.21
- Type
- journal article
- Language
- en
- Open access
- green
- www.osti.gov
- Licence
- Locations
- Journal of the American Chemical Society (publishedVersion)
- PubMed (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- Funders
- Natural Science Foundation of Beijing Municipality (2194083)
- National Natural Science Foundation of China (51673016)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
- Keywords
- vitrimers, thiol-ene click chemistry, polymer networks, plastic recycling, stretchable polymers, sustainable plastics, catalyst leaching
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