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Chemical structure of polymer (PEU-10) prepared via Michael addition reaction. Photographs of a PEU-10 fiber (B) and PEU-10 film (C) displaying photoinduced bending and unbending motions. (D) Self-healing process of a photodeformable PEU-10 film and its photoactuation function after being healed. (E) Reprocesability and recyclability of a PEU-10 film showing no loss of photoactuation function. Adapted with permission from ref (213). Copyright 2021 Royal Society of Chemistry.
