Document Type : Research Paper

Authors

1 Associate Prof of Pulp and Paper Technology, Gorgan University of Agricultural Sciences and Natural Resources, Department of Wood and Paper Technology.

2 phd student of Pulp and Paper Industries, Gorgan University of Agricultural Sciences and Natural Resources.

3 Assistant Prof. of Pulp and Paper Technology, GUASNR, Faculty of Wood and Paper Engineering, Dept. of Wood and Paper Industries

4 Graduate Doctor of Chemistry Visiting Professor, Gorgan University of Agricultural Sciences and Natural Resources, Department of Wood and Paper Technology.

Abstract

The aim of this study was to investigate the effect of coating packing paper with polylactic acid-chitosan and polylactic acid-nano-chitosan complexes in two layer by layer and composite methods. For this purpose, was used of 80 grams long fiber handsheet paper Prepared from Mazandaran wood and paper factory. For the preparation of coating material, 1% poly lactic acid in chloroform and 1% chitosan and nano chitosan in acetic acid were prepared. In both methods, up to three layers of coating were finally applied and the final layer in each treatment was poly lactic acid. The paper samples were then dried in an oven at a temperature of about 100 ° C. In the composite method, each material (chitosan and nano-chitosan) was mixed independently with poly lactic acid on a magnetic stirrer and then seating on a base paper. Finally, all papers were performed for barrier tests including contact angle measurement, water absorption (Cobb) and water vapor transmission rate (WVTR) and resistance tests including burst resistance and air penetration resistance. Based on the results, the barrier properties of the coated Samples in both methods (layer by layer and composite) were increased compared to the control sample. Also, the results of the study of composite and layer by layer methods showed that the LBL method causes more prohibition in the paper and increases the amount of prohibition with increasing the number of coating layers. It is worth noting, however, that between the second and third layers of coating, changes were less pronounced. These changes were observed in both the LBL and composite methods. Air Resistance was also increased in the coated samples.

Keywords

-Azadfallah, M., Molaei, M., Hamzeh, Y. and Khodaeian Chegini, F., 2015. The effect of chitosan – poly (vinyl alcohol) coatings on strength and barrier properties of packaging paper. Iranian Journal of Wood and Paper Science Research, 30(2): 330-340.
-Abdul Khal, H.P.S., Bhat, A.H. and Ireana Yusra, A.F., 2011. Green composites from sustainable cellulose nanofibrils: A review. Carbohydrate Polymers, 87: 963– 979.
-Afra, E., 2016. Properties of paper an introduction. Aeeizh, Tehran, 360p.
-Alemayehu, H., Qinglin Huang, B., Xiao, H. and Eić, M., 2012. Mass transfer of water vapor, carbon dioxide and oxygen on modified cellulose fiber-based materials. Nordic Pulp and Paper Research Journal, 27(2): 2386-2403.
-Almasi, H.,  Ghanbarzadeh, B., Dehghannia, J., Entezami, A. and Khosrowshahi Asl, A., 2013. Studying the effect of modified cellulose nanofibers on the functional properties of poly (lactic acid) based biodegradable packaging. Journal of Research and Innovation in food science and technology. 2(3): 205-218.
-Arlete, B., ReisYoshida, C., Ana Paula. C. and Telma T. Francoa, 2011. Application of chitosan emulsion as a coating on Kraft paper. Polym Int, 60: 963–969.
-Asadi Khansari, R., Dehghani Firouzabadi, M. and Resalati, H., 2015. The effffectt off biiodegradablle coattiings on tthe barriier properttiies off papers. Iranian Journal of Wood and Paper Industries. 7(1): 91-101.
-Casarrubias, l., Castillo, H., Gallardo, S., Cruz, Q., Sánchez, G., Hernández, M., Villa, E. and Aldana, D., 2014. Barrier Properties of Polylactic Acid in Cellulose Based Packages Using Montmorillonite as Filler. Polymers, 6, 2386-2403.
-Ciolacu, f. and Bobu, e., 2015. Improving barrier and strength properties of paper by multi-layer coating with bio-based additives. Cellulose Chem Technol., 49 (7-8): 607-615.
-Dshtbani, R., Resalati, H. and Afra, E., 2012. Evaluation of improved antimicrobial and resistance properties of wrapping paper using chitosan. Science Quarterly Journal of Packaging Science and Technology.   4(13): 68-77.
-Fernanda, C., Soares, F., Müller, C. and Pires, A, 2012. Thermoplastic starch/poly (lactic acid) sheets coated with cross-linked Chitosan. Polymer Testing, 32: 94–98.
-Johansson, C., Bras, J., Mondragon, I., Nechita, P., Plackett, D., Simon, P., Gregor Svetec, D., Virtanen, S., Giacinti Baschetti, M., Breen, CH., Clegg, F. and Aucejo, S., 2012. Renewable fibers and bio-based materials for packaging application – a review of recent development. Bio Resources, 7(2): 2506-2552.
-Mohajerani, S, Ahadi Akhlaghi, E. and Mostafavi Amjad, J., 2013. The Measurement of the Contact Angle of Water Droplets on Soda-Lime GlassnSurface by Mirau Interferometeric Microscope. 21st Iranian optic and photonics conference. 765-768.
-Mohsen, A., 2018. Mechanical color and barrier properties of biodegradable nanocomposites polylactic acid nanoclay. Journal of bioremediation & biodegradation, 9(6): 1-5.
-Nguyen, T., Weiby Gregersen,Y.,  Ma¨nnle, F. and Brachet, P., 2013. Effects of hydrophobic polyhedral oligomeric silsesquioxane coating on water vapour barrier and water resistance properties of paperboard. J Sol-Gel Sci Technol 69:237–249.
-Park, S., lee, H., Choi, J., Jeong, ch., Sung, M. and Park, H., 2011. Improvement in barrier properties of poly (lactic acid) films coated with chitosan or chitosan/clay nanocomposite. Journal of applied polymer science, 125: 675-680.
-Sánchez Aldana, D., Duarte Villa, D., De Dios Hernández, M., González Sánchez, G., Rascón Cruz, Q., Flores Gallardo, S., Piñon Castillo, H. and Ballinas Casarrubias, L., 2014. Barrier Properties of Polylactic Acid in Cellulose Based Packages Using Montmorillonite as Filler. Polymers, 6:2386-2403.
-Samson, O., Adeosun, G.I., Lawal Sambo, A., Balogunand  Akpan, E.I.,  2012. Review of Green Polymer Nanocomposites. Journal of Minerals & Materials Characterization & Engineering, 11(4): 385-416.
-Siracusa, V., Rocculi, P., Romani, S. and Dalla Rosa, M., 2008. Biodegradable polymer for food packaging: A Review. researchgate. net/ publication /222059494
-Songa Huining Xiaoa, ZH. and Zhaob, YI., 2014.  Hydrophobic-modified nano-cellulose fiber/PLA biodegradable composites for lowering water vapor transmission rate (WVTR) of paper. Carbohydrate Polymers, 111: 442–448.
-Thomas, F., Amanda Murawski, G.  and Rafael, L.Q., 2016. Bio-Based Polymers with Potential for Biodegradability. Polymers, 8: 262.
-Vartiainen, J., Vähä-Nissi, M. and Harlin, A., 2014. Biopolymer Films and Coatings in Packaging Applications A Review of Recent Developments. Materials Sciences and Applications, 5: 708-718.
-Yusefian, S. and Soltani, M., 2012. Investigation of contact angle and leaching resistance of zinc oxide treated beech wood. Journal of packaging sciene and technology. 4(13): 68-77.