Mismatched Supramolecular Interactions Facilitate the Reprocessing of Super‐Strong and Ultratough Thermoset Elastomers

Abstract Thermoset elastomers have been extensively applied in many fields because of their excellent mechanical strengths and durable characteristics, such as an excellent chemical resistance. However, in the context of environmental issues, the nonrecyclability of thermosets has become a major barrier to the further development of these materials. Here, a well‐tailored strategy is reported to solve this problem by introducing mismatched supramolecular interactions (MMSIs) into a covalently cross‐linked poly(urethane‐urea) network with dynamic acylsemicarbazide moieties. The MMSIs significantly strengthen and toughen the thermoset elastomer by effectively dissipating energy and resisting external stress. In…

• SU
  Shandong University
• NN
  National Natural Science Foundation of China

  Award: 21975145
• NS
  Natural Science Foundation of Shandong Province

  Award: ZR2023JQ008