Functionalization of Polyurethane/Urea Copolymers with Amide Groups by Polymer Treatment with Ammonia Plasma

Alenka Vesel, Rok Zaplotnik, Gregor Primc, Xiangyu Liu, Kaitian Xu, Kevin C. Chen, Chiju Wei, Miran Mozetic

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Samples of porous foam from polyurethane/urea copolymers based on polyethylene glycol (PURPEG) were prepared in the form of 1-mm-thick discs of diameter 10 cm and exposed to ammonia plasma created by inductively coupled radiofrequency discharge in either low density (E mode) or high density (H mode). The evolution of surface composition and structure upon plasma treatment was characterized by X-ray photoelectron spectroscopy. Treatment in the H mode caused depletion of oxygen even after 2 s of treatment, whereas treatment in the E mode caused gentle functionalization with amide groups. The concentration of functional groups depended on the discharge power, and the best results were obtained at moderately high power just before the transition from E to H modes.

Original languageEnglish (US)
Pages (from-to)835-848
Number of pages14
JournalPlasma Chemistry and Plasma Processing
Volume36
Issue number3
DOIs
StatePublished - May 1 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Surfaces, Coatings and Films

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