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Surface, barrier and adhesion properties of barrier-coated paperboard
2005 (English)Independent thesis Basic level (professional degree)Student thesis
Abstract [en]

Plate-like fillers are often added to polymers in order to improve the barrier properties but also the optical properties and to prevent blocking of dispersion-coated paper or board. Important characteristics of mineral fillers that affect these properties are the particle shape and the chemical nature of the pigments. The aim of this work was to clarify the effect of different fillers and filler contents on the surface and barrier properties of filled dispersion coatings on paperboard, the most important properties here being water vapour permeability and blocking tendency. Three different paperboards were used as substrates to investigate the effect of the smoothness of the substrates on the above-mentioned properties. The substrates were uncoated, precoated and uncoated calendered white top liner. The effect of a paraffin wax addition to the barrier dispersions and a calendering of the wax-containing dispersion-coated paperboard were also studied. A low roughness of the substrate, wax addition, high filler contents and a high aspect ratio of the filler particles all improved the barrier against water and water vapour. Kaolin clay was a better alternative than talc regarding gloss, roughness and printability. Keywords: barrier coating, barrier dispersions, aspect ratio, talc, kaolin, WVTR, Cobb, blocking, latex, paraffin wax, paperboard

Place, publisher, year, edition, pages
2005. , 52 p.
Identifiers
URN: urn:nbn:se:kau:diva-52573Local ID: KEM-24OAI: oai:DiVA.org:kau-52573DiVA: diva2:1101100
Subject / course
Chemistry
Available from: 2017-05-29 Created: 2017-05-29

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CiteExportLink to record
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  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • de-DE
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  • en-US
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