Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 56, Issue 23, Pages 6664-6670Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.7b01293
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Funding
- National Key Research and Development Program of China [2016YFC0802802]
- National Basic Research Program of China (973 Program) [2014CB931804]
- National Natural Science Foundation of China [21374111]
- Research Grants Council of the Hong Kong Special Administrative Region, China [9042354, CityU 11261216]
- Fundamental Research Funds for the Central Universities [WK2320000032]
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Phosphorylated graphene oxides (PGO) were synthesized by a one-pot method and fabricated on the surface of cotton fabrics for the improvement of fire safety. The chemical structure of PGO was characterized by FTIR and XPS. SEM images of the pure and coated cotton fabrics indicated that PGO had better compatibility with water than GO and was more beneficial for self-assembly fabrication than GO. Vertical flame test and cone calorimeter test revealed that flame retardancy of cotton fabrics was obviously improved by PGO based multilayer coating. The plausible flame retardancy mechanism was proposed: PGO with large layered structures could effectively insulate the permeation of oxygen and volatile flammable gases, thereby decreasing the heat release rate; on the other hand, the presence of phosphorus could play an important role in the catalytic charring effect during combustion, which significantly promoted the formation of char residue and then further prevented the permeation of oxygen and pyrolysis products.
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