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Nonleaching antimicrobial films prepared from surface modified microfibrillated cellulose

Nonleaching antimicrobial films prepared from surface modified microfibrillated cellulose

Kategori
Vitenskapelig artikkel
Sammendrag
We have prepared potentially permanent antimicrobial films based on surface-modified microfibrillated cellulose (MFC). MFC, obtained by disintegration of bleached softwood sulfite pulp in a homogenizer, was grafted with the quaternary ammonium compound octadecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride (ODDMAC) by a simple adsorption-curing process. Films prepared from the ODDMAC-modified MFC were characterized by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) and tested for antibacterial activity against the Gram-positive bacterium Staphylococcus aureus and the Gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa. The films showed substantial antibacterial capacity even at very low concentrations of antimicrobial agent immobilized on the surface. A zone of inhibition test demonstrated that no ODDMAC diffused into the surroundings, verifying that the films were indeed of the nonleaching type.
Språk
Engelsk
Forfatter(e)
  • Martin Andresen
  • Per Martin Stenstad
  • Trond Møretrø
  • Solveig Langsrud
  • Kristin Syverud
  • Leena-Sisko Johansson
  • Per Johan Stenius
Institusjon(er)
  • Ukjent
  • SINTEF Industri / Bioteknologi og nanomedisin
  • NOFIMA
År
Publisert i
Biomacromolecules
ISSN
1525-7797
Årgang
8
Side(r)
2149 - 2155