Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

Abstract Reversible adhesives permit adaptability and sustainability in advanced materials devices. However, their implementation is significantly hampered by poor adhesive strength owing to the critical trade‐off between interfacial adhesion cohesion energy preservation, as well challenge of large‐scale low‐cost manufacturing. Herein, a class ultrastrong reversible integrating epoxy (EP) polyurethane (PU) via dynamic furan‐maleimide chemistry reported, which features well‐tunable microphase‐separated structures. The interspersed rigid EP domains provide remarkable cohesive strength, while continuous flexible PU phase dissipates mechanical through chain extension hydrogen‐bond dissociation, enhancing both toughness adhesion. This unique design allows precise tuning properties across large range, maintaining thermo‐reversibility enabling scalable Notably, EP‐PU achieves an ultrahigh (34.6 MPa), substantially outperforming most reported so far, matching commercial structural standards. Meanwhile, displays exceptional multiple reusability, on‐demand separation capacity, broad substrate compatibility, satisfactory environmental stability.

Language: Английский