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Issue 44, 2019
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A stretchable and rapidly self-healable polysiloxane elastomer based on reversible aluminum–amino coordination

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Abstract

Self-healing polymers have been increasingly investigated for the development of sustainable materials. However, it is challenging for self-healable systems to achieve a rapid self-healing at low temperature. Here, we sought to introduce weaker yet more dynamic supramolecular interactions to construct self-healable elastomers. By incorporating main-group aluminum ions into an amino-grafted polysiloxane matrix, a supramolecular elastomer, PDMS-NH2-Al, was obtained. Unlike most reported strong coordination systems based on transition/rare-earth metals and π-acid ligands, the coordination between main-group Al3+ and simple σ ligands (amines) was revealed to be comparatively weaker yet more dynamic. This unique combination led to an excellent healing efficiency over 90% in 60 min even at a temperature as low as −20 °C.

Graphical abstract: A stretchable and rapidly self-healable polysiloxane elastomer based on reversible aluminum–amino coordination

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Publication details

The article was received on 28 Jul 2019, accepted on 16 Oct 2019 and first published on 16 Oct 2019


Article type: Paper
DOI: 10.1039/C9NJ03909K
New J. Chem., 2019,43, 17441-17445

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    A stretchable and rapidly self-healable polysiloxane elastomer based on reversible aluminum–amino coordination

    Y. Lei, Q. Huang, S. Shan, Y. Lin and A. Zhang, New J. Chem., 2019, 43, 17441
    DOI: 10.1039/C9NJ03909K

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