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A novel method for studying the photo-stabilising properties of coating layers
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. (FSCN – Fibre Science and Communication Network)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Responsible organisation
2006 (English)Conference paper, (Other academic)
Abstract [en]

A new model system was developed which made it possible to study the reflectance and transmittance of thin coating layers (<10 g/m2) in a reproducible way, and to link this to the inhibition of the light-induced yellowing (Figure 1). The UV/VIS-screening properties of coatings of different coat weights containing common pigments such as kaolin, calcium carbonate (ground or precipitated) and titanium dioxide will be reported. The ability of a coating layer to protect a birch CTMP from light-induced discoloration will be exemplified using the evolved model system. An estimation of the contribution of different wavelength regions of the illuminating light to the photo-yellowing of various types of materials will also be shown. The developed method is a valuable tool for future photo-yellowing studies as well as for optimisation of the pigment coating formulation for various paper grades.

Place, publisher, year, edition, pages
2006.
Keyword [en]
High-yield pulp, CTMP, Birch, Coating, Pigments, Kaolin, Calcium carbonate, Light-induced, Ageing
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-3624Local ID: 4079OAI: oai:DiVA.org:miun-3624DiVA: diva2:28656
Conference
5th Fundamental Mechanical Pulp Reserch Seminar (FMPRS),Trondheim, Norway, 31 May-1 June 2006
Available from: 2008-09-30 Created: 2009-06-08 Last updated: 2013-12-17Bibliographically approved
In thesis
1. The Photostabilising Effect of Coating Layers on CTMP‐based Papers
Open this publication in new window or tab >>The Photostabilising Effect of Coating Layers on CTMP‐based Papers
2006 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2006
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 13
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-9104 (URN)
Presentation
(English)
Available from: 2009-06-08 Created: 2009-06-08 Last updated: 2009-07-13Bibliographically approved

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Citation style
  • apa
  • harvard1
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