This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility:

fact-checked

trusted source

proofread

Researchers demonstrate breakthrough recyclability of carbon nanotube sheets

Researchers demonstrate breakthrough recyclability of carbon nanotube sheets
Graphical abstract. Credit: Carbon (2024). DOI: 10.1016/j.carbon.2024.118851

Researchers at IMDEA Materials Institute have demonstrated for the first time the recyclability of high-performance carbon nanotube (CNT) sheets while maintaining their essential mechanical and electrical properties.

The paper outlining the work, "Network structure enabling re-use and near full property retention in CNT sheets recycled from thermoset composites," was published in the journal Carbon.

It represents a significant advance in sustainable nanostructured materials and holds promise for fibers, sheets, and textiles to play a pivotal role in the future transition to green energy.

"Even three years ago, there was little interest in recycling CNT-based materials and this research is the first attempt in this direction," explained Dr. Anastasiia Mikhalchan, Senior Research Associate at IMDEA Materials Institute.

"It demonstrates that made from carbon nanotubes can be reused as structural reinforcement or electrical conductors. This is due to the fact that neither their continuity, alignment and , nor their conductivity is affected by this recycling process."

"These will be able to displace widespread CO2-intensive materials, such as conventional carbon fibers and some metals like copper, decreasing our future CO2 emissions footprint."

  • IMDEA Materials demonstrates breakthrough recyclability of Carbon Nanotube Sheets
    IMDEA Materials researcher Dr. Anastasiia Mikchalchan with a recycled carbon nanotube sheet. Credit: IMDEA Materials Institute
  • IMDEA Materials demonstrates breakthrough recyclability of Carbon Nanotube Sheets
    The recycled carbon nanotube sheets retain their key mechanical properties, including their flexibility. Credit: IMDEA Materials Institute

The work utilizes carbon nanotubes rapidly grown and directly assembled into freestanding network materials by means of floating catalyst chemical vapor deposition (FCCVD) synthesis process.

These CNT fibers and sheets possess high structural toughness and flexibility as well as high mechanical, electrical and thermal properties which enables their usage in structural reinforcement in composite laminates, as well as printable strain/stress sensors, electrical conductors, and flexible battery anodes etc.

With the global CNT production capacity increasing annually, recycling CNT-based materials has become a pertinent topic. The research conducted by IMDEA Materials is expected to catalyze the scale-up of manufacturing high-performance CNT materials and accelerate their adoption by the industry.

More information: Anastasiia Mikhalchan et al, Network structure enabling re-use and near full property retention in CNT sheets recycled from thermoset composites, Carbon (2024). DOI: 10.1016/j.carbon.2024.118851

Provided by IMDEA Materials

Citation: Researchers demonstrate breakthrough recyclability of carbon nanotube sheets (2024, March 18) retrieved 19 April 2024 from https://phys.org/news/2024-03-breakthrough-recyclability-carbon-nanotube-sheets.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.

Explore further

Defective thermoplastic composite parts can be reborn with better characteristics

16 shares

Feedback to editors