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Evaluation of carbon nanotubes dispersion in aqueous solution with various dispersing agents

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(6), pp.1327-1337
  • DOI : 10.1007/s42823-021-00285-8
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : April 30, 2021
  • Accepted : September 22, 2021
  • Published : December 1, 2021

Kim Youn 1 Hong Ji Soo 1 Moon Su Young 1 Hong Jin-Yong 1 Lee Jea Uk 2

1한국화학연구원
2경희대학교

Accredited

ABSTRACT

In order to extend the business viability of carbon nanotubes (CNTs), research on CNT dispersion in a solvent as well as in polymer matrix should be established. Herein, three kinds of dispersing agents, sodium deoxycholate (DOC), sodium dodecylbenzene sulfonate (NaDDBS), polyvinyl pyrrolidone (PVP), are selected and applied to quantify the dispersibility and dispersion stability of CNT aqueous dispersion. The dispersibility of CNT dispersion with the PVP, evaluated via viscosity and particle size analyses, are superior to those with the DOC and NaDDBS dispersing agents. CNT aqueous solution dispersed with PVP showed slightly higher viscosity and narrower particle size distribution than those with DOC and NaDDBS dispersing agents. In addition, the dispersion stability of CNT dispersion with the PVP, measured via lumisizer analyses, are superior to those with the DOC and NaDDBS dispersing agents. HR-TEM analysis verifes that the outstanding dispersibility and dispersion stability of CNTs in aqueous solution are due to the efect of the robust polymer wrapping of the PVP dispersing agent on the CNT surface. From the results of this study, the guidelines for the selection of the suitable dispersing agents and the systematic evaluation of dispersibility and dispersion stability of CNT dispersions can be suggested.

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Scopus Citation Counts (6) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2023-10-01)

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