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Related Experiment Video

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Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
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Sheet Collapsing Approach for Rubber-like Graphene Papers.

Youhua Xiao1, Zhen Xu1, Yingjun Liu1

  • 1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University , 38 Zheda Road, Hangzhou 310027, People's Republic of China.

ACS Nano
|August 5, 2017
PubMed
Summary

Graphene oxide sheets collapse in poor solvents, forming wrinkled papers with tunable mechanical properties. This 2D polymer approach allows precise control over graphene material design.

Keywords:
graphene paperrubber-likesheet collapsingviscoelasticitywrinkles

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Controlling graphene conformation is key for macroscopic material design.
  • Graphene oxide (GO) sheets exhibit unique behaviors in different solvents.

Purpose of the Study:

  • To investigate the sheet collapsing behavior of graphene oxide (GO) in poor solvents.
  • To explore the fabrication of self-standing GO and graphene papers with tunable properties.

Main Methods:

  • Analogy with linear macromolecules to understand GO sheet collapsing.
  • Utilizing poor solvents to induce hierarchical wrinkling and folding in GO sheets.
  • Fabrication of amorphous self-standing GO and graphene papers.

Main Results:

  • GO sheets collapse into hierarchically wrinkled conformations when exposed to poor solvents.
  • Fabricated GO and graphene papers exhibit rubber-like mechanical behavior and viscoelasticity.
  • Tunable mechanical properties achieved, ranging from stiff to soft (100 MPa modulus) with high elongation (23%).

Conclusions:

  • Treating graphene as a 2D polymer enables effective control over its conformation.
  • This method allows for the design of macroscopic 2D nanomaterials with tailored properties.
  • The collapsing behavior offers a new pathway for advanced graphene-based material development.