novel organophosphorus flame retardant: Synthesis and durable finishing of poly(ethylene terephthalate)/cotton blends

• Published in: Journal of applied polymer science Vol. 117; no. 5; pp. 3066 - 3074
• Main Authors: Li, Qiang-Lin, Wang, Xiu-Li, Wang, De-Yi, Xiong, Wei-Cheng, Zhong, Guang-Hong, Wang, Yu-Zhong
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 05.09.2010; Wiley
• Subjects: Applied sciences; Blends; Compounding ingredients; Cotton; Durability; Exact sciences and technology; fibers; Fibers and threads; Finishing; Fireproof agents; flame retardance; Flame retardants; Forms of application and semi-finished materials; Polymer blends; Polymer industry, paints, wood; Spectroscopy; synthesis; Technology of polymers; Terephthalate; Substituent effect; Ethylene terephthalate polymer; synthesis; Polymer blends; fibers; Ester polymer; Synthetic fiber; Plant fiber; Flame retardant; Durability; Organic phosphonate; Cotton; Experimental study; Thermal stability; Thermal properties; flame retardance; Additive; Natural fiber; Morphology; Preparation; Flammability; Textile finishing
• ISSN: 0021-8995; 1097-4628; 1097-4628
• DOI: 10.1002/app.32074

A novel, hydroxy-functional, organophosphorus flame retardant (FR), 2,2-dihydroxymethylpropane-1,3-diolylbis(hydrogen phenylphosphonate) (DHDBP), was synthesized and characterized by Fourier transform infrared (FTIR) spectroscopy, ¹H-NMR, ¹³C-NMR, ³¹P-NMR, and elemental analysis. Subsequently, poly(ethylene terephthalate) (PET)/cotton (T/C; 70/30) blends were treated via pad-dry-thermosol finishing with DHDBP, citric acid, and a catalyst. Its flame retardancy, durability effect, and thermal decomposition behaviors were investigated by limited oxygen index, vertical burning test, thermogravimetric analysis, FTIR spectroscopy, and scanning electron microscopy. The results show that DHDBP was not only a reactive FR with a high efficiency but also a good char-forming agent for the T/C blends.