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Extremely stretchable thermosensitive hydrogels by introducing slide-ring polyrotaxane cross-linkers and ionic groups into the polymer network

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  • Abu Bin Imran

    (Graduate School of Engineering, Nagoya University
    Present address: Department of Chemistry, Faculty of Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh)

  • Kenta Esaki

    (Graduate School of Engineering, Nagoya University)

  • Hiroaki Gotoh

    (Graduate School of Engineering, Nagoya University)

  • Takahiro Seki

    (Graduate School of Engineering, Nagoya University)

  • Kohzo Ito

    (Graduate School of Frontier Sciences, The University of Tokyo)

  • Yasuhiro Sakai

    (Graduate School of Frontier Sciences, The University of Tokyo)

  • Yukikazu Takeoka

    (Graduate School of Engineering, Nagoya University)

Abstract

Stimuli-sensitive hydrogels changing their volumes and shapes in response to various stimulations have potential applications in multiple fields. However, these hydrogels have not yet been commercialized due to some problems that need to be overcome. One of the most significant problems is that conventional stimuli-sensitive hydrogels are usually brittle. Here we prepare extremely stretchable thermosensitive hydrogels with good toughness by using polyrotaxane derivatives composed of α-cyclodextrin and polyethylene glycol as cross-linkers and introducing ionic groups into the polymer network. The ionic groups help the polyrotaxane cross-linkers to become well extended in the polymer network. The resulting hydrogels are surprisingly stretchable and tough because the cross-linked α-cyclodextrin molecules can move along the polyethylene glycol chains. In addition, the polyrotaxane cross-linkers can be used with a variety of vinyl monomers; the mechanical properties of the wide variety of polymer gels can be improved by using these cross-linkers.

Suggested Citation

  • Abu Bin Imran & Kenta Esaki & Hiroaki Gotoh & Takahiro Seki & Kohzo Ito & Yasuhiro Sakai & Yukikazu Takeoka, 2014. "Extremely stretchable thermosensitive hydrogels by introducing slide-ring polyrotaxane cross-linkers and ionic groups into the polymer network," Nature Communications, Nature, vol. 5(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6124
    DOI: 10.1038/ncomms6124
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    Cited by:

    1. D. Michieletto & P. Neill & S. Weir & D. Evans & N. Crist & V. A. Martinez & R. M. Robertson-Anderson, 2022. "Topological digestion drives time-varying rheology of entangled DNA fluids," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    2. Xueru Xiong & Yunhua Chen & Zhenxing Wang & Huan Liu & Mengqi Le & Caihong Lin & Gang Wu & Lin Wang & Xuetao Shi & Yong-Guang Jia & Yanli Zhao, 2023. "Polymerizable rotaxane hydrogels for three-dimensional printing fabrication of wearable sensors," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    3. Xue Yang & Lin Cheng & Zhaoming Zhang & Jun Zhao & Ruixue Bai & Zhewen Guo & Wei Yu & Xuzhou Yan, 2022. "Amplification of integrated microscopic motions of high-density [2]rotaxanes in mechanically interlocked networks," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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