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Role of hydrogen bonding in hysteresis observed in sorption-induced swelling of soft nanoporous polymers

Author

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  • Mingyang Chen

    (ETH Zurich
    Swiss Federal Laboratories for Materials Science and Technology)

  • Benoit Coasne

    (Univ. Grenoble Alpes)

  • Robert Guyer

    (University of Nevada)

  • Dominique Derome

    (Swiss Federal Laboratories for Materials Science and Technology)

  • Jan Carmeliet

    (ETH Zurich)

Abstract

Hysteresis is observed in sorption-induced swelling in various soft nanoporous polymers. The associated coupling mechanism responsible for the observed sorption-induced swelling and associated hysteresis needs to be unraveled. Here we report a microscopic scenario for the molecular mechanism responsible for hysteresis in sorption-induced swelling in natural polymers such as cellulose using atom-scale simulation; moisture content and swelling exhibit hysteresis upon ad- and desorption but not swelling versus moisture content. Different hydrogen bond networks are examined; cellulose swells to form water–cellulose bonds upon adsorption but these bonds do not break upon desorption at the same chemical potential. These findings, which are supported by mechanical testing and cellulose textural assessment upon sorption, shed light on experimental observations for wood and other related materials.

Suggested Citation

  • Mingyang Chen & Benoit Coasne & Robert Guyer & Dominique Derome & Jan Carmeliet, 2018. "Role of hydrogen bonding in hysteresis observed in sorption-induced swelling of soft nanoporous polymers," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05897-9
    DOI: 10.1038/s41467-018-05897-9
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    Cited by:

    1. Darjan Podbevšek & Yeojin Jung & Maheen K. Khan & Honghui Yu & Raymond S. Tu & Xi Chen, 2024. "The role of water mobility on water-responsive actuation of silk," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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