Ideal reversible polymer networks

Soft Matter
German Alberto Parada, Xuanhe Zhao

Abstract

In this article we introduce the concept of ideal reversible polymer networks, which have well-controlled polymer network structures similar to ideal covalent polymer networks but exhibit viscoelastic behaviors due to the presence of reversible crosslinks. We first present a theory to describe the mechanical properties of ideal reversible polymer networks. Because short polymer chains of equal length are used to construct the network, there are no chain entanglements and the chains' Rouse relaxation time is much shorter than the reversible crosslinks' characteristic time. Therefore, the ideal reversible polymer network behaves as a single Maxwell element of a spring and a dashpot in series, with the instantaneous shear modulus and relaxation time determined by the concentration of elastically-active chains and the dynamics of reversible crosslinks, respectively. The theory provides general methods to (i) independently control the instantaneous shear modulus and relaxation time of the networks, and to (ii) quantitatively measure kinetic parameters of the reversible crosslinks, including reaction rates and activation energies, from macroscopic viscoelastic measurements. To validate the proposed theory and methods, we synthesized ...Continue Reading

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Citations

Feb 13, 2019·Soft Matter·Nicholas B TitoWouter G Ellenbroek
Aug 28, 2020·Nature·Ovijit ChaudhuriVivek B Shenoy
May 17, 2019·Materials·Roberto BrighentiMattia Pancrazio Cosma
Apr 16, 2020·Proceedings of the National Academy of Sciences of the United States of America·Christopher W BarneyAlfred J Crosby
Mar 7, 2021·Polymers·Gérald MunozPatrice Malfreyt
Aug 19, 2020·Journal of the American Chemical Society·Bruno Marco-DufortMark W Tibbitt
Apr 13, 2021·Chemical Reviews·Xuanhe ZhaoGerman Parada
Jun 3, 2021·Bioengineering·Aleksey D Drozdov, Jesper deClaville Christiansen
May 26, 2021·Scientific Reports·Christian AermesClaudia Tanja Mierke
May 13, 2021·Angewandte Chemie·Dong ZhaoXuzhou Yan
Sep 10, 2020·Journal of the American Chemical Society·Guido CreusenAndreas Walther
Aug 20, 2020·Biomacromolecules·Bruno Marco-DufortMark W Tibbitt
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Aug 29, 2021·Polymers·Zhuonan Yu, Kuo-Kang Liu
Jan 29, 2021·Chemical Reviews·Sungmin Nam, David Mooney

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