Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Enhancing Flame Retardancy of Cotton Fabrics via Formation of Layer-by-layer Assemblies of Polyacrylic Acid and Calcium Phosphate

폴리아크릴산과 인산칼슘의 다층 레이어 형성을 통한 면직물의 난연성 향상

  • Lee, Hong Chan (Department of Electric and Electronic Engineering, Jungwon University) ;
  • Lee, Shichoon (Department of Aero-Materials Engineering, Jungwon University)
  • 이홍찬 (중원대학교 전기전자공학과) ;
  • 이시춘 (중원대학교 항공재료공학과)
  • Received : 2020.10.01
  • Accepted : 2020.10.25
  • Published : 2020.10.31
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Abstract

This study was conducted to impart flame retardancy to cotton fabrics while maintaining their mechanical properties and appearance under environmentally friendly and room-temperature conditions. Anionic functional groups were prepared by adding polyacrylic acid to the cotton fabric. Calcium phosphate was grafted to polyacrylic acid by inducing a reaction between calcium ions and ammonium phosphate. In this layer-by-layer (LBL) deposition, 20 layers were formed. The results of a vertical flammability test revealed that the combustion of the multilayered fabrics was delayed and that the fabric structures were maintained, even after the combustion process. Thermogravimetric analysis showed that the residues of the multilayered cotton increased to 17% at temperatures above 500 ℃. X-ray photoelectron spectroscopy confirmed the production of calcium phosphate. These results indicate that calcium ions reacted with and were grafted to the carboxyl groups of polyacrylic acid, and that the grafted calcium ions reacted with ammonium phosphate to generate calcium phosphate. These findings suggest that LBL deposition can be performed with calcium phosphate to produce cotton fabrics with improved flame retardancy in an environmentally friendly manner.

Keywords

References

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