Recently, one paper titled as “Recyclable, Self-healable, and Highly Malleable Poly(urethane-urea)s with improved Thermal and Mechanical Performances” was published on ACS Applied Materials & Interfaces. The first author of the paper is Dr. Shujuan Wang. (Link to 10.1021/acsami.0c07553)

Developing recyclable, self-healable and highly malleable thermosets is one of the keys to relieve environmental pollution and meet our increasing demand for “greener” materials. Hindered urea bonds (HUBs) have been successfully incorporated in preparing dynamic covalent networks with those desirable properties. However, one key drawback is the low thermal stability and poor mechanical performance of previously reported systems. In this work, we demonstrated that the incorporation of aromatic-moiety-containing diamine based HUBs can greatly improve the thermal and mechanical performance of the PUUs while still maintaining the desirable recycling, self-healing and reprocessing properties. This unique and simple approach is expected to open up new avenues to design PUUs with optimal performance for various applications.

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