Geometric control and tuneable pore size distribution of buckypaper and buckydiscs

Raymond L.D. Whitby, Takahiro Fukuda, Toru Maekawa, Stuart L. James, Sergey V. Mikhalovsky

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123 Citations (Scopus)

Abstract

The fabrication of buckypaper from unfunctionalised multi-walled carbon nanotubes (MWCNTs) without the aid of surfactants or surface modification techniques is accomplished through a novel and quick frit compression method. The dimensions can be controlled through the size of the syringe housing and the through the mass of carbon nanotubes added. Their thicknesses are typically much larger than surfactant-cast buckypaper and range from 120 μm up to 650 μm; buckypaper with thicknesses larger than 500 μm we call buckydiscs. Buckypaper and buckydiscs are mechanically robust to handle, flexible, stable in solvents and possess larger porosities than Triton-X100 cast buckypaper. They also exhibit a memory effect when bending wetted samples, returning to their former geometry on drying. Buckypaper and buckydiscs were studied by mercury intrusion porosimetry to reveal a defined distribution of mesopores and small macropores that is, along with their density and apparent free volume, dependant on the casting solvent and therefore tuneable. Moreover, the frit compression system also allows control over the 3-dimensional geometry of the buckydiscs during the casting process.

Original languageEnglish
Pages (from-to)949-956
Number of pages8
JournalCarbon
Volume46
Issue number6
DOIs
Publication statusPublished - May 1 2008

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Cite this

Whitby, R. L. D., Fukuda, T., Maekawa, T., James, S. L., & Mikhalovsky, S. V. (2008). Geometric control and tuneable pore size distribution of buckypaper and buckydiscs. Carbon, 46(6), 949-956. https://doi.org/10.1016/j.carbon.2008.02.028