Polyetherimide/bucky gels nanocomposites with superior conductivity and thermal stability

Ye Chen, Jing Tao, Lin Deng, Liang Li, Jun Li, Yang Yang, Niveen M. Khashab

Research output: Contribution to journalArticlepeer-review

Abstract

Polyetherimide (PEI) nanocomposites comprising bucky gels of industrial-grade multiwalled carbon nanotubes (MWCNTs) and ionic liquid (IL, 1-butyl-3-methyl imidazolium hexafluorophosphate ([BMIM][PF6])) were prepared. The processing framework for this nanocomposite is simple, reproducible, and easily scalable. The strong interaction between IL and MWCNTs caused the latter to uniformly disperse in the PEI matrix while IL flowed into the gaps between the nanotubes' walls. The nanocomposite exhibited an enhanced conductivity of 2.01 × 104 Ω·cm volume resistivity at room temperature; the value decreased dramatically by 12 orders of magnitude, compared to pristine PEI. The IL free ions and MWCNTs networks provided excellent channels for electron transfer. PEI/bucky gels nanocomposites also showed improved thermal stability and high tensile strength. Other than having antiwear properties, this material can have numerous applications in the aerospace and electronics industries. Moreover, our work presents a "green" method toward modified nanocomposites industrial production as IL is environmentally safe and is easily recyclable.

Original languageEnglish (US)
Pages (from-to)7478-7484
Number of pages7
JournalACS Applied Materials and Interfaces
Volume5
Issue number15
DOIs
StatePublished - Aug 14 2013

Keywords

  • conductivity
  • ionic liquid
  • mechanical properties
  • MWCNT
  • nanocomposites
  • PEI

ASJC Scopus subject areas

  • Materials Science(all)

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