Phosphorus grafted chitosan functionalized graphene oxide-based nanocomposite as a novel flame-retardant material for textile and wood

Abstract

We report synthesis of phosphorous grafted chitosan functionalized graphene oxide (GO) based nanocomposite (PCG) as a highly potent flame retardant (FR). PCG coated cloth (PCGC) sample on exposure to flame...

One‐pot synthesis of aluminum phosphate‐supported, chitosan‐linked expandable graphite as a novel flame retardant for textile

“…At 2889 cm −1 , aliphatic CH stretching was seen. Peak values for NH bending, CH stretching, and CO vibration are 1647, 1557, and 1016 cm −1 , respectively 27 . The FT‐IR of AlPC shows PO and PC at 1150 and 1096 cm −1 .…”

“…Peak values for N H bending, C H stretching, and C O vibration are 1647, 1557, and 1016 cm À1 , respectively. 27 The FT-IR of AlPC shows P O and P C at 1150 and 1096 cm À1 . This denoted that the AlP has bound the cellulose surface of cotton.…”

“…This showed that the pyrolysis of cotton cellulose, in addition to the deacetylation of chitosan and the release of physically related moisture, contributes to weight loss. 27 In the case of EGC, because of the existence of trapped gas and water in the graphite surface, the initial weight loss is only 5%. Due to bond breakdown and carbon skeleton degradation, the second significant weight loss is 79%.…”

“…The proposed structural characteristics of the CAlPEG composite significantly contribute to the promotion of char formation while minimizing the emission of flammable, volatile compounds, resulting in a high level of flame retardancy. 27 Previous studies have proven to prevent the production of l-glucose and create thick cross-linked graphitized char residues; the CSC and phosphoric acid encourage the dehydration and carbonization of cellulose. 35 As a FR mechanism, we can predict that expandable graphite will deform from its layer structure when CAlPEGC comes into touch with flame, forming a char layer.…”

Development and demonstration of highly potent flame-retardant cotton fabric

“…25 After 350 °C, continuous weight loss was observed as the temperature steadily increased. 25,26 However, the case of guanidine@cotton fabric showed only one major weight loss in the range of 250-350 °C due to the dehydration of cellulose, formation of char residue and evaporation of volatile product. 25 Similarly, continuous weight loss was observed w.r.t.…”