Abstract
Front Cover: In article number 2000527 by Faai Zhang and co-workers, a crosslinked polymer blend based on a urethane‒arcylate system with a combination of reversibly noncovalent intrachain and interchain hydrogen bonds and dynamically covalent urea bonds is developed through a facile in situ photoinduced copolymerization. The materials exhibit rapid self-healing at mild conditions (70 °C, 30 min), extreme toughness (≈34.76 MJ m−3), high tensile strength, superior stretchability, long-term stability, recyclability, and weldability.
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