学術雑誌論文

学術雑誌論文

text

Nature Communications. 2026, 17, p. 5452

Toughening elastomer via sequentially activated multi-pathway energy dissipation

Nature Research

英語

text

2026-07-01

https://doi.org/10.1038/s41467-026-74148-z

Li X., Xiao C., Izutsu H., et al. Toughening elastomer via sequentially activated multi-pathway energy dissipation. Nature Communications 17, 5452 (2026); https://doi.org/10.1038/s41467-026-74148-z.

Auxiliary energy dissipation pathways have been incorporated into elastomer design to enhance the toughness. However, most strategies involving multiple pathways rely on non-synergistic dissipation that ceases to function once structural evolution occurs. Herein, we report a strategy to toughen elastomer via sequentially activated multi-pathway energy dissipation, simultaneously integrating mechanically interlocked networks (MINs), scissile mechanophore, and woven networks within a single polymer. A rotaxane crosslinker is applied to construct MINs in polyurethane as the primary energy dissipation pathway. After the sliding motion of the rotaxane crosslinkers reaches its maximal extent, the truxinate mechanophore embedded in rotaxane’s macrocycle undergoes sacrificial scission as the secondary pathway. Subsequently, the linear chain produced by cleavage of the rotaxane’s macrocycle inherently entangles with the axle chain, resulting in woven networks as the tertiary energy dissipation pathway. This strategy substantially enhances the toughness and clarifies how mechanophore activation interacts with supramolecular architecture in polymeric materials.

This article is licensed under a Creative Commons Attribution 4.0 International License.

106756

Toughening elastomer via sequentially activated multi-pathway energy dissipation

Nature Research

英語

2026-07-01

Nature Communications

17

5452

https://doi.org/10.1038/s41467-026-74148-z

https://hdl.handle.net/11094/106756