Investigation on the Effect of Nano-clay on Improving Fire Retardancy Properties of Paper Made from Bgasse Soda Pulp

Document Type : Original Article

Authors

1 Ph.D. Student, Dept. of Paper Sciences and Engineering, Faculty of Wood and Paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

2 Professor, Dept. of Paper Sciences and Engineering, Faculty of Wood and Paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

3 Associate Prof., Dept. of Paper Sciences and Engineering, Faculty of Wood and Paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

4 Associate Prof., Dept. of , Paper Sciences and Engineering, Faculty of Wood and Paper Engineering, Sari University of Agricultural Sciences and Natural Resources,Sari, Iran

Abstract

Fire retardant materials play an important role in increasing thermal stability and reducing risks associated with material ignition. One of the effective methods to increase fire retardancy properties is the use of nanomaterials such as nanoclays. Montmorillonite nanoclay (MMT) is known as one of the most important nanomaterials in this field due to its layered structure and unique properties. In addition, cationic starch, as a natural material with high adhesion and synergistic properties, can guarantee the improvement of mechanical and thermal properties of materials. In this research, using soda bagasse paper pulp, handmade cardboard with a basis weight of 125 g/m2 and the thickness of 0.185 mm was prepared. Nanoclay was used as a fire retardant with different concentrations (10%, 20%, 30%). To improve paper dry resistance and char formation, cationic starch was added to all treatments at a constant rate of 10%. The coating operation was carried out at Gorgan University of Agricultural Sciences and Natural Resources with Auto Bar Coater. The physical and resistance characteristics of paper, including liquid penetration resistance, paper thickness, contact angle, tensile strength, burst resistance, and tear resistance were investigated. Also, the properties of slow burning and thermal stability were investigated using TGA device and vertical flammability tests and FTIR. The results showed that coating with montmorillonite nanoclay and cationic starch can significantly increase the tensile strength, tearing resistance and bursting resistance of the paper. The best performance was observed at 20% concentration. Various mechanisms including the formation of hydrogen bonds and the increase of specific surface area contributed to this improvement. In addition, the coating improved the flame retardancy properties and thermal stability of the paper. These results show that the use of nanoclay and cationic starch can effectively improve the resistance and thermal properties of paper.
 
 

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Main Subjects

References

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Packaging Science and Art
Volume 15, Issue 59 - Serial Number 59
Serial number 59, summer 2024
December 2024
Pages 21-31

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History

  • Receive Date: 12 August 2024
  • Revise Date: 24 August 2024
  • Accept Date: 13 October 2024
  • Publish Date: 10 December 2024

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