Open access
Date
2023Type
- Journal Article
ETH Bibliography
yes
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Abstract
Reversing controlled radical polymerization and regenerating the monomer has been a long-standing challenge for fundamental research and practical applications. Herein, we report a highly efficient depolymerization method for various polymethacrylates synthesized by reversible addition-fragmentation chain-transfer (RAFT) polymerization. The depolymerization process, which does not require any catalyst, exhibits near-quantitative conversions of up to 92%. The key aspect of our approach is the utilization of the high end-group fidelity of RAFT polymers to generate chain-end radicals at 120 degrees C. These radicals trigger a rapid unzipping of the polymethacrylates. The depolymerization product can be utilized to either reconstruct the linear polymer or create an entirely new insoluble gel that can also be subjected to depolymerization. Our depolymerization strategy offers a promising route towards the development of sustainable and efficient recycling methods for complex polymer materials. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000616983Publication status
publishedExternal links
Journal / series
ChimiaVolume
Pages / Article No.
Publisher
Swiss Chemical SocietySubject
Chemical recycling; Depolymerization; Polymethacrylates; RAFT polymerizationOrganisational unit
09644 - Anastasaki, Athina / Anastasaki, Athina
Funding
949219 - Reversing Controlled Radical Polymerisation: Towards Complete Depolymerisation (EC)
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ETH Bibliography
yes
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