A Novel Flame Retardant for Cotton Containing Ammonium Phosphonic Acid and Phosphonate Prepared from Urea

Environment-friendly flame-retardant cotton textiles have been receiving considerable interest both in academic and industrial circles for years. Herein, a novel flame-retardant coating for cotton fabrics was reported based on vinyl phosphonic acid and 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane through an O2 plasma-induced polymerization process. The coating on cotton fabrics was confirmed by Fourier transform infrared spectrophotometry, scanning electron microscopy and energy dispersive X-ray spectrometry. Excellent flame retardancy and thermal stability properties were found from thermogravimetric analysis, the limiting oxygen index, modified vertical burning tests and pyrolysis combustion flow calorimetry. The results revealed that there was a good synergistic effect between poly(vinyl phosphonic acid) and polysiloxane segments in flame-retardant cotton fibers. The new flame-retardant coating induced an earlier decomposition of cellulose, and enhanced the formation of stable char under thermal oxygen and significantly reduced the heat release capacity.

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Pyrolysis dynamics of dicyclohexyl phosphonic acid aluminium flame retardant polyamide

Plastics Rubber and Composites ◽

10.1080/14658011.2019.1600106 ◽

2019 ◽

Vol 48 (6) ◽

pp. 240-247 ◽

Cited By ~ 2

Author(s):

Heng Zhang ◽

Hongyan Yang ◽

Heng Yang ◽

Junliang Lu ◽

Kaijie Mu ◽

...

Keyword(s):

Flame Retardant ◽

Phosphonic Acid

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Permanent flame retardant finishing of textile materials by a photochemical immobilization of vinyl phosphonic acid

Polymer Degradation and Stability ◽

10.1016/j.polymdegradstab.2010.02.022 ◽

2011 ◽

Vol 96 (3) ◽

pp. 393-395 ◽

Cited By ~ 43

Author(s):

Klaus Opwis ◽

Andreas Wego ◽

Thomas Bahners ◽

Eckhard Schollmeyer

Keyword(s):

Flame Retardant ◽

Phosphonic Acid ◽

Textile Materials

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Durable and Environmentally Friendly Flame-Retardant Finish on Wool via Graft Copolymerization of Vinyl Phosphonic Acid

Biointerface Research in Applied Chemistry ◽

10.33263/briac123.36473663 ◽

2021 ◽

Vol 12 (3) ◽

pp. 3647-3663

Keyword(s):

Flame Retardant ◽

Phosphonic Acid ◽

Chemical Structure ◽

Treatment Process ◽

Ignition Time ◽

Environmentally Friendly ◽

Fold Increase ◽

Wool Fabric ◽

Thermogravimetric Studies ◽

Temperature Time

A durable and environmentally friendly flame-retardant treatment process on wool via graft co-polymerization of vinyl phosphonic acid (VPA) was investigated. The influence of temperature, time, VPA, and catalyst on the grafting yield (GY) was studied. Employing response surface methodology, the grafting parameters were optimized, and the highest GY was achieved. Thermogravimetric studies showed a 3.86% increase in the remaining char ratio at 750°C for the wool fabric after graft co-polymerization of VPA. Flame retardancy of wool fabrics was evaluated with respect to their limiting oxygen indices (LOI) and the ease of ignition measurements. The sample with 8.1% GY exhibited a 35.89% increase in LOI and over a 3.66-fold increase in ignition time. The chemical structure of the grafted wool is proposed according to FTIR and 31P Solid-state MAS NMR evidence. The presented flame-retardant finish process was deemed to be a green and durable substitute for the conventional, semi-durable, and non-environmentally friendly processes.

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