Carbon nanotubes prepared from polymer microspheres by spinning and carbonizing

Denisa Hulicova, Katsuhiko Hosoi, Shin Ichi Kuroda, Asao Oya, Hiroaki Abe

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

Multi-wall carbon nanotubes (CNTs) with diameters between 10 nm and 20 nm were prepared by melt spinning, stabilizing and carbonizing of fine core/shell-1/shell-2 polymer microspheres. Microspheres were synthesized by three-steps soap free emulsion polymerization of methylmetacrylale (MMA) and acrylonitrile (AN) using potassium persulfate (KPS) as a polymerization radical initiator. The final composition of microspheres was PMMA core/PAN shell-1/PMMA shell-2 and diameter ca. 500nm. The outer PMMA layer played the role of a matrix polymer. Microspheres were directly melt spun at ca. 300°C followed by stabilization of PAN at 220°C in oxygen and carbonization at 100°C in nitrogen. TG-DTA study was used for clarifying the PAN thermal behavior during CNTs synthesis. SEM, TEM and HRTEM were used in characterizing the microspheres and CNTs morphology.

Original languageEnglish
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume387
Issue numberPART 2
DOIs
Publication statusPublished - 2002 Dec 1
EventProceedings of the First International Symposium on Nanocarbons - Nagano, Japan
Duration: 2001 Nov 142001 Nov 16

Keywords

  • Carbon nanotubes
  • Core/shell microspheres
  • Melt spinning
  • Soap-free emulsion polymerization

ASJC Scopus subject areas

  • Condensed Matter Physics

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