Characterization of flame coated nanoparticle surfaces with antibacterial properties and the heat-induced embedding in thermoplastic-coated paper

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Kofi J. Brobbey, Janne Haapanen, Jyrki M. Mäkelä, Marianne Gunell, Erkki Eerola, Emil Rosqvist, Jouko Peltonen, Jarkko J. Saarinen, Martti Toivakka
Publisher: Springer International Publishing
Publication year: 2019
Journal: SN Applied Science
Journal acronym: SNAS
Volume number: 1


Abstract

Silver nanoparticles deposited on surfaces can provide an antibacterial
effect with potential uses in, for example, healthcare settings.
However, release of nanoparticles and their potential exposure to the
environment is of concern. The current work demonstrates a continuous
synthesis that simultaneously deposits silver nanoparticles onto plastic
coated paper surface by utilizing the liquid flame spray (LFS) aerosol
process. Heat from LFS is used to soften the thermoplastic paper
surface, which enables partial and full embedding of the nanoparticles,
thereby improving adhesion. The embedding is confirmed with atomic force
and scanning electron microscopy, and the deposited silver amounts are
quantified with X-ray photoelectron spectroscopy. The results suggest
that embedding was more effective in PE-coated paper samples due to the
lower glass transition temperature when compared to PET-coated paper
samples. The antibacterial properties of the surfaces against E. coli and S. aureus
were maintained and confirmed with a previously developed ‘Touch-Test
Method’. The LFS process has the potential to be used for large-scale
manufacturing of antibacterial surfaces with improved nanoparticle
adhesion on appropriately chosen thermoplastic surfaces.


Keywords

antibacterial property, atomic force microscopy (AFM), Liquid Flame Spray (LFS), Silver nanoparticles

Last updated on 2019-20-04 at 03:17