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Issue 43, 2017
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Polydimethylsiloxane quenchable vitrimers

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An elastomeric vitrimer material was synthesized via the crosslinking of a polydimethylsiloxane bearing pendant amino functions with a bis-vinylogous urethane crosslinker. The elastic properties of this material could be tuned across a wide range of moduli by varying crosslink density. Reshaping and recyclability were observed at 100 °C. Further investigation of the dynamic character revealed double relaxations, which could be supressed by masking free amino groups. Finally, these studies led to the development of a single-pot, solution-castable formulation of a non-dynamic permanent elastomer. These results open a way for the design of quenchable vitrimers, that is to say crosslinked materials which after shaping or recycling exhibit conventional elastomer properties.

Graphical abstract: Polydimethylsiloxane quenchable vitrimers

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Article information

01 Sep 2017
16 Oct 2017
First published
27 Oct 2017

Polym. Chem., 2017,8, 6590-6593
Article type

Polydimethylsiloxane quenchable vitrimers

T. Stukenbroeker, W. Wang, J. M. Winne, F. E. Du Prez, R. Nicolaÿ and L. Leibler, Polym. Chem., 2017, 8, 6590
DOI: 10.1039/C7PY01488K

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