Wear resistance of nanoparticle coatings on paperboard

Milena Stepien, Gary Chinga-Carrasco, Jarkko Saarinen, Hannu Teisala, Mikko Tuominen, Mikko Aromaa, Janne Haapanen, Jurkka Kuusipalo, Jyrki M. Mäkelä, Martti Toivakka

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    21 Citeringar (Scopus)

    Sammanfattning

    Paper can be coated with liquid flame spray (LFS) generated nanoparticles to control the wettability of its surface from hydrophilic to superhydrophobic. The adhesion of the nanoparticles on paper is of interest both for understanding the product durability during its lifetime and for product safety issues. Poor particle adhesion influences the desired functional properties and released nanoparticles cause health and environmental concerns. To investigate the wear resistance of LFS-TiO2 and -SiO2 coated papers, the nanoparticle surfaces were exposed to rotary abrasion tests. The changes in the samples were analyzed by contact angle measurements and high resolution field-emission scanning electron microscopy (FESEM). After abrasive action with another paperboard surface, only relatively small changes in wettability of superhydrophobic/hydrophilic coatings were found. A more severe abrasive action will remove some of the nanoparticle coating, but the hydrophobic/hydrophilic character of the surface is still maintained to large extent. The results indicate that the wear resistance of LFS nanocoated paper surfaces differs and depends on the nanoparticle material type used for the coating. This is clearly reflected as changes in surface structure shown by FE-SEM and wettability. The results can help understanding which paper-related application areas could be targeted with the LFS-nanoparticle coating process.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)112–118
    Antal sidor7
    TidskriftWear
    Volym307
    Utgåva1-2
    DOI
    StatusPublicerad - 2013
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • Microscopy techniques
    • Nanoparticle coatings
    • Paperboard
    • Surface analysis
    • Wear resistance
    • Wettability

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