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The Effect of Chitosan - Poly (vinyl alcohol) Coatings on Strength and Barrier Properties of Packaging Paper | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 14, Volume 30, Summer 2 - Serial Number 51, August 2015, Pages 330-340 PDF (550 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2015.12923 | ||
| Authors | ||
| masoumeh mollaei* 1; Mohammad Azadfallah2; Yahya Hamzeh3; faramarz khodaian chegini4 | ||
| 1M.Sc., Pulp and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran | ||
| 2Assistant Professor, Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran | ||
| 3Professor, Department of Wood Science and Technology, University of Tehran, Karaj, Iran | ||
| 4Associate Professor, Department of Food Science and Technology, University of Tehran, Karaj, Iran | ||
| Abstract | ||
| The Effect of Chitosan - Poly (vinyl alcohol) Coatings on Strength and Barrier Properties of Packaging Paper Abstract In this research the mechanical and barrier properties of hand-sheets made of virgin and recycled fibers were studied after coating by chitosan and poly (vinyl alcohol) polymer blends. Therefore to evaluate coatings effects on barrier properties, water vapor transmission rate (WVTR), water absorbance, air resistance and grease proof of coated papers were determined. Moreover, mechanical strength including tensile strength and burst strength were measured. According to the results, the barrier properties and mechanical strength of coated papers improved dramatically than uncoated ones. The best results in WVTR and mechanical strength tests were obtained for coatings with the same ratio of polymers. On the other hand, coating with 75%chitosan - 25% poly (vinyl alcohol) composition exhibited excellent resistance against the grease penetration and water absorption. Keywords: Coating, chitosan, poly (vinyl alcohol), barrier properties, mechanical strength | ||
| Keywords | ||
| Coating; chitosan; Poly (vinyl alcohol); barrier properties; Mechanical strength | ||
| References | ||
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