Fabrication of transparent, tough, and conductive shape-memory polyurethane films by incorporating a small amount of high-quality graphene

Yong Chae Jung, Jin Hee Kim, Takuya Hayashi, Yoong Ahm Kim, Morinobu Endo, Mauricio Terrones, Mildred S. Dresselhaus

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

We report a mechanically strong, electrically and thermally conductive, and optically transparent shape-memory polyurethane composite which was fabricated by introducing a small amount (0.1 wt%) of high-quality graphene as a filler. Geometrically large (â4.6 Îm 2), but highly crystallized few-layer graphenes, verified by Raman spectroscopy and transmission electron microscopy, were prepared by the sonication of expandable graphite in an organic solvent. Oxygen- containing functional groups at the edge plane of graphene were crucial for an effective stress transfer from the graphene to polyurethane. Homogeneously dispersed few-layered graphene enabled polyurethane to have a high shape recovery force of 1.8 MPa cm -3. Graphene, which is intrinsically stretchable up to 10%, will enable high-performance composites to be fabricated at relatively low cost and we thus envisage that such composites may replace carbon nanotubes for various applications in the near future.

Original languageEnglish (US)
Pages (from-to)628-634
Number of pages7
JournalMacromolecular Rapid Communications
Volume33
Issue number8
DOIs
StatePublished - Apr 23 2012

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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