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    Adjustable wettability of paperboard by liquid flame spray nanoparticle deposition

    Year: 2011

    Journal: Applied Surface Science, Volume 257, Issue 6, 1 January 2011, Pages 1911-1917, 20111221

    Authors: Milena Stepien a,* , Jarkko J. Saarinen a , Hannu Teisala b , Mikko Tuominen b , Mikko Aromaa c , Jurkka Kuusipalo b , Jyrki M. Mäkelä c , Martti Toivakka a

    Organizations: a Laboratory of Paper Coating and Converting, Center for Functional Materials, Åbo Akademi University, Porthansgatan 3, FI-20500 Åbo/Turku, Finland, b Paper Converting and Packaging Technology, Department of Energy and Process Engineering, Tampere University of Technology, P.O. Box 541, FI-33101 Tampere, Finland, c Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P.O. Box 692, FI-33101 Tampere, Finland

    Liquid flame spray process (LFS) was used for depositing TiOx and SiOx nanoparticles on paperboard to control wetting properties of the surface. By the LFS process it is possible to create either superhydrophobic or superhydrophilic surfaces. Changes in the wettability are related to structural properties of the surface, which were characterized using scanning electron microscope (SEM) and atomic force microscope (AFM). The surface properties can be ascribed as a correlation between wetting properties of the paperboard and the surface texture created by nanoparticles. Surfaces can be produced inline in a one step roll-to-roll process without need for additional modifications. Furthermore, functional surfaces with adjustable hydrophilicity or hydrophobicity can be fabricated simply by choosing appropriate liquid precursors.