The effect of biodegradable coatings on the barrier properties of papers

Document Type : Research Paper

Authors

1 PhD Student at Gorgan University of Natural Resources, Department of Pulp and Paper Technology, Lecturer, Technical & Vocational Faculty of Someesara

2 Department of pulp and paper industry, PhD, Wood and Paper Industry, Associate Professor, Gorgan University of Agricultural Sciences and Natural Resources

3 Department of pulp and paper industry, PhD, Wood and Paper Industry, Professor, Sari University of Agricultural Sciences and Natural Resources

Abstract

The objective of this work was to compare barrier property of biodegradable coatings on two base papers. Two different paper grades differing in structure (Kraft liner and printing & writing papers) were used. The papers are made in Mazandaran wood and paper industry. Coating materials with 30% solid content, included clay (100 parts) and cationic starch (12 parts), and they were mixed with two binders (PLA 10 parts and PVA 10 parts) for two formulations. The immersion method in both levels 1 and 2 minutes and two coating formulations were applied on papers. Then, the treated samples were dried in standard conditions of temperature (25◦C) and 54% humidity in the room. For that purpose, air resistance or porosity, thickness, mass, and Cobb60 were determined. As expected, time of treatment, reduced porosity and increased coating weight, but in terms of barrier properties, combination containing PVA was more effective than PLA. In comparison to the control group, all the treated samples had higher air resistance and water absorption, which the increment of water absorption is due to increased capillary in texture paper. The analysis of results showed that the immersion coating factors had considerable effects on performance of air resistance improvement and coating weight of papers. Then, calculated values of the thickness and density of coating were evaluated, which confirmed the status of water absorption. The treatments greatly increased the wettability of the surface by water.

Keywords

References

[1] Pykonen, M., Silvaani, H., Preston, J., Fardim, P. and Toivakka, M., 2009. Plasma activation induced changes in surface chemistry of pigment coating components. Colloids and Surfaces A: Physicochem. Eng. Aspects, 352:103–112.
[2] Asadi khansari, R. and Dehghani Firouzabadi, M., 2013. Introduce of new paper and cardboard in food packaging, Journal of Packaging Science and Technology, 4(16):46-57. (In Persian).
[3] Laine, C., Harlin, A., Hartman, J., Hyvärinen, S., Kammiovirta, K., Krogerus, B., Pajari, H., Rautkoski, H., Setälä, H., Sievänen, J., Uotila, J. and Vähä-Nissi, M., 2013. Hydroxyalkylated xylans–Their synthesis and application in coatings for packaging and paper. Industrial Crops and Products, 44:692-704.
[4] Bollstrom, R., Tuominen, M., Maattanen, A., Peltonen, J. and Toivakka, M., 2012. Top layer coatability on barrier coatings. Progress in organic coatings, 73:26-32.
[5] Arbatan, T., Zhang, L., Fang, X. and Shen, W., 2012. Cellulose nanofibers as binder for fabrication of superhydrophobic paper. Chemical Engineering Journal, 210:74-79.
[6] Dellinger, D., Elie Jr, H., 2013. Composition for use in edible biodegradable articles and method of use. Biosphere Industries Lic. US8382888 B2.
[7] Shawaphun, S. and Manangan, T., 2010. Paper Coating with Biodegradable Polymer for Food Packaging, Sci. J. UBU, 1(1):51-57.
[8] Hirvikorpi, T., Vaha-Nissi, M., Harlin, A., Marles, J., Miikkulainen, V. and Karppinen, M., 2010. Effect of corona pre-treatment on the performance of gas barrier layers applied by atomic layer deposition onto polymer-coated paperboard. Applied Surface Science, 257:736–740.
[9] Jinkarn, T., Thawornwiriyanan, S., Boonyawan, D., Rachtanapun, P. and Sane, S., 2012. Effects of treatment time by sulphur hexafluoride (SF6) plasma on barrier and mechanical properties of paperboard. Packaging Technology and Science, 25(1):19–30.
Iranian Journal of Wood and Paper Industries
Volume 7, Issue 1
June 2016
Pages 91-101

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