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

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Pykönen M, Sundqvist H, Järnström J, Kaukoniemi OV, Tuominen M, Lahti J, Peltonen J, Fardim P, Toivakka M
Publisher: ELSEVIER SCIENCE BV
Publication year: 2008
Journal: Applied Surface Science
Journal acronym: APPL SURF SCI
Volume number: 255
Issue number: 5
Start page: 3217
End page: 3229
Number of pages: 13
ISSN: 0169-4332


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.


Keywords

Paper, Plasma activation, Surface chemistry, Topography

Last updated on 2019-16-07 at 04:16