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Compressibility of porous TiO2 nanoparticle coating on paperboard |
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| Authors: | Milena Stepien Jarkko J Saarinen Hannu Teisala Mikko Tuominen Janne Haapanen Jyrki M M?kel? Jurkka Kuusipalo Martti Toivakka |
| Affiliation: | 1.Laboratory of Paper Coating and Converting, Center for Functional Materials, Åbo Akademi University, Porthansgatan 3, Turku FI-20500, Finland;2.Paper Converting and Packaging Technology, Department of Materials Science, Tampere University of Technology, P.O. Box 589, Tampere FI-33101, Finland;3.Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P.O. Box 692, Tampere FI-33101, Finland |
| Abstract: | Compressibility of liquid flame spray-deposited porous TiO2 nanoparticle coating was studied on paperboard samples using a traditional calendering technique in which the paperboard is compressed between a metal and polymer roll. Surface superhydrophobicity is lost due to a smoothening effect when the number of successive calendering cycles is increased. Field emission scanning electron microscope surface and cross‒sectional images support the atomic force microscope roughness analysis that shows a significant compressibility of the deposited TiO2 nanoparticle coating with decrease in the surface roughness and nanoscale porosity under external pressure.PACS61.46.-w; 68.08.Bc; 81.07.-b |
| Keywords: | Nanoparticles Compressibility Wettability Liquid flame spray process |