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Chemical control of the viscoelastic properties of vinylogous urethane vitrimers

Author

Listed:
  • Wim Denissen

    (Polymer Chemistry Research Group and Laboratory for Organic Synthesis, Ghent University)

  • Martijn Droesbeke

    (Polymer Chemistry Research Group and Laboratory for Organic Synthesis, Ghent University)

  • Renaud Nicolaÿ

    (Matière Molle et Chimie, UMR 7167 CNRS-ESPCI, ESPCI ParisTech)

  • Ludwik Leibler

    (Matière Molle et Chimie, UMR 7167 CNRS-ESPCI, ESPCI ParisTech)

  • Johan M. Winne

    (Polymer Chemistry Research Group and Laboratory for Organic Synthesis, Ghent University)

  • Filip E. Du Prez

    (Polymer Chemistry Research Group and Laboratory for Organic Synthesis, Ghent University)

Abstract

Vinylogous urethane based vitrimers are polymer networks that have the intrinsic property to undergo network rearrangements, stress relaxation and viscoelastic flow, mediated by rapid addition/elimination reactions of free chain end amines. Here we show that the covalent exchange kinetics significantly can be influenced by combination with various simple additives. As anticipated, the exchange reactions on network level can be further accelerated using either Brønsted or Lewis acid additives. Remarkably, however, a strong inhibitory effect is observed when a base is added to the polymer matrix. These effects have been mechanistically rationalized, guided by low-molecular weight kinetic model experiments. Thus, vitrimer elastomer materials can be rationally designed to display a wide range of viscoelastic properties.

Suggested Citation

  • Wim Denissen & Martijn Droesbeke & Renaud Nicolaÿ & Ludwik Leibler & Johan M. Winne & Filip E. Du Prez, 2017. "Chemical control of the viscoelastic properties of vinylogous urethane vitrimers," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14857
    DOI: 10.1038/ncomms14857
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    Cited by:

    1. Jiayao Chen & Lin Li & Jiancheng Luo & Lingyao Meng & Xiao Zhao & Shenghan Song & Zoriana Demchuk & Pei Li & Yi He & Alexei P. Sokolov & Peng-Fei Cao, 2024. "Covalent adaptable polymer networks with CO2-facilitated recyclability," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Derek J. Bischoff & Taeheon Lee & Kyung-Seok Kang & Jake Molineux & Wallace O’Neil Parker & Jeffrey Pyun & Michael E. Mackay, 2023. "Unraveling the rheology of inverse vulcanized polymers," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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