Synthesis of Novel Arginine-Based Flame Retardant and Its Application in Lyocell Fabric

Abstract

Lyocell fabrics are widely applied in textiles, however, its high flammability increases the risk of fire. Therefore, to resolve the issue, a novel biomass-based flame retardant with phosphorus and nitrogen elements was designed and synthesized by the reaction of arginine with phosphoric acid and urea. It was then grafted onto the lyocell fabric by a dip-dry-cure technique to prepare durable flame-retardant lyocell fabric (FR-lyocell). X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FTIR) analysis demonstrated that the flame retardant was successfully introduced into the lyocell sample. Thermogravimetric (TG) and Raman analyses confirmed that the modified lyocell fabric featured excellent thermal stability and significantly increased char residue. Vertical combustion results indicated that FR-lyocell before and after washing formed a complete and dense char layer. Thermogravimetric Fourier-transform infrared (TG-FTIR) analysis suggested that incombustible substances (such as H2O and CO2) were produced and played a significant fire retarding role in the gas phase. The cone calorimeter test corroborated that the peak of heat release rate (PHRR) and total heat release (THR) declined by 89.4% and 56.4%, respectively. These results indicated that the flame retardancy of the lyocell fabric was observably ameliorated.

Synthesis of a graft‐functionalized flame retardant based on DOPO and its application on the surface of terylene/cotton fabrics

“…Overall, the HRR, THR, and CO 2 P of the fabrics were reduced by the introduction of DOPO‐p on the surface, especially for impregnated solution concentrations up to 6%, with the sample reaching the highest values of FPI and lowest values of FGI. Figure 6g shows a comparison of the present work with some similar methods (surface treatments) in terms of p‐HRR decrease per unit of weight growth 33–48 . The results show that the strategy of preparing coatings on fabric surfaces by dissolving DOPO‐p in DMF has a very high flame‐retardant efficiency.…”

“…Figure 6g shows a comparison of the present work with some similar methods (surface treatments) in terms of p-HRR decrease per unit of weight growth. [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] The results show that the strategy of preparing coatings on fabric surfaces by dissolving DOPO-p in DMF has a very high flame-retardant efficiency. Therefore, while achieving the same flameretardant level, the strategy often does not require the modification of thicker coatings on the fabric surfaces to…”

Effect of acidic nano ZSM‐5 modified by hydroxyapatite nanowires on flame‐retardant performance in PLA/IFR composite

“…For CO 2 , they were almost the same. In addition, the peaks at 1510 and 1540 cm −1 may correspond to stretching vibration of CN and flexural vibration of NH 3 and NO 2 , 44 which also play an important role in diluting the flammable volatile gases.…”