Effects of atmospheric plasma activation on surface properties of pigment-coated and surface-sized papers

M Pykönen, H Sundqvist, Joakim Järnström, OV Kaukoniemi, M Tuominen, J Lahti, Jouko Peltonen, Pedro Fardim, Martti Toivakka

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    35 Citations (Scopus)

    Abstract

    Pigment-coated, surface-sized, and surface-sized copy papers were treated with conventional corona, experimental pilot-scale plasma and laboratory-scale plasma. All the treatments increased the surface energy and oxidized the surface. The changes in the surface chemistry depended on treatment time and composition of the substrate surface. It seems that plasma especially oxidizes the long polymer chains, such as surfactants and other paper chemicals, on the surface of the paper. The ToF-SIMS distribution maps indicated that the pilot-scale treatment led to an uneven CO(+) group distribution, whereas laboratory scale treatment gave a more even distribution of CO(+) groups. In addition to chemical changes, topographical changes due to plasma treatment were detected. The RMS roughness increased for pigment-coated paper, whereas plasma treatment induced small nodules between the paper pigment particles with pigmented and surface-sized paper. The increase in roughness was also found to increase the wettability. This serves as a demonstration of roughness-induced increase of surface energy of the samples.
    Original languageUndefined/Unknown
    Pages (from-to)3217–3229
    Number of pages13
    JournalApplied Surface Science
    Volume255
    Issue number5
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Paper
    • Plasma activation
    • Surface chemistry
    • Topography

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