Modification of PET-polymer surface by nitrogen plasma

Rok Zaplotnik*, Metod Kolar, Aleš Doliška, Karin Stana-Kleinschek

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Low pressure weakly nitrogen plasma was applied for incorporation of nitrogen-containing functional groups onto poly(ethylene terephthalate) - PET polymer. Nitrogen plasma was created in an electrode-less radiofrequency discharge at the nominal power of 200 W and the frequency of 27.12 MHz. Nitrogen molecules entered the discharge region were highly excited, partially dissociated and weakly ionized. Transformation into the state of plasma allowed for creation of chemically reactive particles with a high potential energy while the kinetic energy remained close to the value typical for room temperature. The chemical reactivity allowed for rapid functionalization with nitrogen-rich functional groups. The appearance of these groups was monitored by X-ray photoelectron spectroscopy - XPS. The polymer surface was quickly saturated with nitrogen indicating that the modification was limited to an extremely thin surface film.

Original languageEnglish
Pages (from-to)199-203
Number of pages5
JournalMateriali in Tehnologije
Volume45
Issue number3
Publication statusPublished - 1 May 2011
Externally publishedYes

Keywords

  • Functional groups
  • Nitrogen plasma
  • Poly(ethylene terephthalate)
  • Surface modification
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Polymers and Plastics
  • Metals and Alloys

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