Optical, structural and adsorption properties of zinc peroxide/hydrogel nanohybrid films

Dániel Sebok, László Janovák, Imre Dékány

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Hybrid nanofilms from zinc-peroxide/poly(acrylamide) (ZnO 2 /PAAm) and zinc-peroxide/poly(N-isopropyl-acrylamide) (ZnO 2 /PNIPAAm) were prepared using the photopolymerization procedure. The thin layers were prepared by the combination of the Layer-by-Layer (LbL) self-assembly method and photopolymerization using UV light in every step of the procedure. The hybrid multilayer films consisting of layers of zinc peroxide nanoparticles and hydrogel alternating in a sandwich-like fashion with thicknesses of 65-246 nm. The chemical structures of the hybrid films were investigated by FTIR spectroscopy, their morphology was studied by atomic force microscopy (AFM). The build up of the films was studied by measuring the optical reflection spectrum, and we have calculated the refractive index and layer thickness of the hybrid layers using simulating software. The adsorption properties of the ZnO 2 /hydrogel nanohybrid composite networks were investigated by measuring water and ethanol vapour adsorption by a quartz crystal microbalance (QCM). It was established that on partially hydrophobic ZnO 2 /PNIPAAm hybrids the adsorbed amounts were lower, against the hydrophilic ZnO 2 /PAAm film the vapour amount was higher. These results correspond to those of the bulk gel swelling results.

Original languageEnglish
Pages (from-to)5349-5354
Number of pages6
JournalApplied Surface Science
Volume256
Issue number17
DOIs
Publication statusPublished - Jun 15 2010

Keywords

  • Adsorption
  • Hydrogel
  • Photopolymerization
  • Self assembly

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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