Journal
CARBOHYDRATE POLYMERS
Volume 170, Issue -, Pages 133-139Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2017.04.065
Keywords
Metal ions; Alginate; Layer-by-layer assembly; Coating; Cotton fabric
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Funding
- National Natural Science Foundation of China [51573173]
- National Basic Research Program of China (973 Program) [2014CB931804]
- Fundamental Research Funds for the Central Universities [WK2320000032]
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Bio-based and phosphorus-free coating was fabricated by layer-by-layer assembly method to obtain the flame retardant cotton fabric. For the first time, the modified cotton fabrics were prepared by utilizing positively charged polyethylenimine and negatively charged alginate together with subsequent crosslinking of barium, nickel and cobalt ions. Scanning electron microscopy and energy-dispersive X-ray demonstrated that the metal ions crosslinked coating was successfully constructed on the substrate. The thermal stability and flame retardancy were investigated by thermogravimetric analysis (TGA) and horizontal flame tests. TGA results showed that the degradation of the coated cotton fabrics were retarded at high temperature and the char residue of the cotton fabrics were improved after covered with the barium, nickel and cobalt ions crosslinked coatings. Furthermore, the fire resistance of cotton-Ba sample was enhanced significantly compared with the untreated sample, as evidenced by the obvious reduction (28%) of flame spread rate and complete char residue. Finally, the washing durability of coating on the fabric was enhanced after metal ions crosslinked with alginate based coating. (C) 2017 Published by Elsevier Ltd.
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