Electromechanical properties of fibers produced from randomly oriented SWCNT films by wet pulling technique

Sergey D. Shandakov, Alexey V. Kosobutsky, Anna I. Vershinina, Oleg G. Sevostyanov, Irina M. Chirkova, Dmitriy M. Russakov, Maksim V. Lomakin, Mikhail S. Rybakov, Tatiana V. Glushkova, Evgeny A. Ovcharenko, Maria A. Zhilyaeva, Albert G. Nasibulin

Research output: Contribution to journalArticlepeer-review

Abstract

We examined a fiber formation from pristine and modified single-walled carbon nanotube (SWCNT) films using a recently developed wet pulling technique. Crucial phenomena in the wet pulling process are a folding of a solvent soaked SWCNT film due to the liquid surface tension and fiber densification during the solvent evaporation. It is shown that electrical characteristics of the as-produced fibers are determined by the type of the liquid employed in their formation, which defines the SWCNT packing degree. The obtained specific strength (0.6–0.8 N/tex), toughness (up to 127 J/g) and specific conductivity (0.5–1.2 kS·m2/kg) are in many cases comparable with published data for fibers produced by more resource-consuming methods. These, in combination with the simplicity of our method and high piezoresistive gauge factor of 14 (for untwisted fibers at a 1% elongation), make SWCNT fibers promising components in future applications of stretchable electronics and robotics.

Original languageEnglish
Article number115178
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume269
DOIs
Publication statusPublished - Jul 2021

Keywords

  • Carbon nanotube fibers
  • Conductivity
  • Gauge factor
  • Packing degree
  • Toughness

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