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February 28, 2026Macromolecules

Room-Temperature, Atom-Economic Closed-Loop Recycling of Thermosets Enabled by Catalyst-Free Dynamic Thiohemiketals

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Authors

QXQionglu XiaoHLHui LiCLChun Liu

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Overview

Demonstrates catalyst-free closed-loop recycling of thermosets, highlighting eco-friendly implications for polymer design.

Key Points

  • The study aims to develop a novel approach for sustainable closed-loop recycling of thermosets at room temperature.
  • Introduced thiohemiketal as a dynamic covalent motif for recyclable polymers.
  • Conducted mechanistic studies on bond formation and dynamic exchange in small-molecule models.
  • Synthesized covalent adaptable networks through solvent- and catalyst-free polymerization.
  • Evaluated thermal stability and mechanical properties of created polymers.
  • Achieved quantitative monomer recovery and no chemical consumption during closed-loop recycling.
  • Demonstrated exceptional thermal stability and tunable mechanical properties.
  • Confirmed strong adhesion with lap shear strength of 12.5 MPa on iron.
  • Enabled rapid self-healing and multimodal reprocessability of the networks.

Cite This Study

Xiao et al. (2026) studied this question.

synapsesocial.com/papers/69a287a00a974eb0d3c036dahttps://doi.org/10.1021/acs.macromol.5c02725
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