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J Am Chem Soc. 2015 Apr 15;137(14):4846-50. doi: 10.1021/jacs.5b01601. Epub 2015 Apr 1.

Enhancing mechanical performance of a covalent self-healing material by sacrificial noncovalent bonds.

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Department of Chemistry, University of California, Irvine, California 92697, United States.


Polymers that repair themselves after mechanical damage can significantly improve their durability and safety. A major goal in the field of self-healing materials is to combine robust mechanical and efficient healing properties. Here, we show that incorporation of sacrificial bonds into a self-repairable network dramatically improves the overall mechanical properties. Specifically, we use simple secondary amide side chains to create dynamic energy dissipative hydrogen bonds in a covalently cross-linked polymer network, which can self-heal via olefin cross-metathesis. We envision that this straightforward sacrificial bonding strategy can be employed to improve mechanical properties in a variety of self-healing systems.

[Indexed for MEDLINE]

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