Influence of surface chemical composition on UV-varnish absorption into permeable pigment-coated paper

Maiju Pykönen, Kenth Johansson, Roger Bollström, Pedro Fardim, Martti Toivakka

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

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    Sammanfattning

    Fluorocarbon, organosilicon, and hydrocarbon plasma coatings were used to modify the surface permeable pigment-coated paper, and their impact on UV-varnish absorption was investigated. According to mercury porosimetry results, the plasma coatings had no influence on the porous structure of the paper. X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) results showed characteristic surface chemical compositions for each plasma coating. The fluorocarbon plasma coating increased the UV-varnish contact angles significantly, whereas the hydrocarbon plasma coating had no clear influence. When the UV varnish was applied with a flexography unit including nip pressure, the role of surface chemical composition seemed to become minimal. The viscosity of the UV varnish was shown to impact the absorption rate with and without external pressure.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)2169–2175
    Antal sidor7
    TidskriftIndustrial & Engineering Chemistry Research
    Volym49
    Utgåva5
    DOI
    StatusPublicerad - 2010
    MoE-publikationstypA1 Tidskriftsartikel-refererad

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