The effect of incorporating cellulose and chitosan nano-fibers into pigment coating formulation on the physical and mechanical properties of Testliner

Document Type : Research Paper

Authors

1 Department of Wood and Paper Science and Technology Faculty of Natural Resources University of Tehran, Karaj, I.R. Iran

2 Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran

3 University of Tehran

Abstract

Cellulose nanofiber (CNF) and chitosan nanofiber were incorporated into conventional pigment coating structures, and their effects have been investigated on the properties of the Testliner. Hence, Testliner paper samples were double-coated, and the addition of cellulose nanofiber and chitosan nanofiber was conducted into the formulation of top layer coating. The results indicated that in comparison with uncoated samples, coating improved roughness and significantly decreased air permeability of the Testliner. Although the application of conventional pigmented coatings reduced burst strength and tensile strength indices, the addition of both CNFs and chitosan nanofiber compensate for the losses so that high gain was obtained for chitosan fiber-containing formulation. As was expected, a significant enhancement of brightness was achieved due to the double-layer coating of the Testliner. It can be concluded that incorporating these nanofibers as additives into conventional pigmented coatings can play an influential role in improving the properties of the Testliner board as a valuable packaging material.

Keywords

References

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Iranian Journal of Wood and Paper Industries
Volume 13, Issue 2
September 2022
Pages 133-145

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