Effect of coating packing paper with polylactic acid-chitosan and polylactic acid-nano-chitosan complexes | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 28, Volume 34, Issue 4 - Serial Number 69, February 2020, Pages 507-519 PDF (1.4 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2020.128661.1585 | ||
| Authors | ||
| ali ghasemiyan1; khadijeh armand* 2; Elyas Afra3; ahmad reza saraeian1; mina salary4 | ||
| 1Associate Prof of Pulp and Paper Technology, Gorgan University of Agricultural Sciences and Natural Resources, Department of Wood and Paper Technology. | ||
| 2phd student of Pulp and Paper Industries, Gorgan University of Agricultural Sciences and Natural Resources. | ||
| 3Assistant Prof. of Pulp and Paper Technology, GUASNR, Faculty of Wood and Paper Engineering, Dept. of Wood and Paper Industries | ||
| 4Graduate 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 | ||
| chitosan; coating; nano chitosan; packing paper and polylactic acid | ||
| References | ||
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