Dielectric barrier discharge plasma treatment of cellulose nanofibre surfaces

Yukihiro Kusano, Bo Madsen, Linn Berglund, Yvonne Aitomäki, Kristiina Oksman

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Dielectric barrier discharge plasma treatment was applied to modify cellulose nanofibre (CNF) surfaces with and without ultrasonic irradiation. The plasma treatment improved the wetting by deionised water and glycerol, and increased the contents of oxygen, carbonyl group, and carboxyl group on the nanofibre surface. Ultrasonic irradiation further enhanced the wetting and oxidation of the nanofibre coating. Scanning electron microscopic observations showed skeleton-like features on the plasma-treated surface, indicating preferential etching of weaker domains, such as low-molecular weight domains and amorphous phases. Ultrasonic irradiation also improved the uniformity of the treatment. Altogether, it is demonstrated that atmospheric pressure plasma treatment is a promising technique to modify the CNF surface before composite processing.
Original languageEnglish
JournalSurface Engineering
Volume34
Issue number11
Pages (from-to)825-831
ISSN0267-0844
DOIs
Publication statusPublished - 2018

Keywords

  • Cellulose
  • Nanofibres
  • Plasma treatment
  • Ultrasound
  • Surface modification
  • Wetting
  • Etching
  • Uniformity

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