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

    Research output: Contribution to journalArticleScientificpeer-review

    20 Citations (Scopus)

    Abstract

    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.
    Original languageUndefined/Unknown
    Pages (from-to)112–118
    Number of pages7
    JournalWear
    Volume307
    Issue number1-2
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Keywords

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

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