Sodium tri-polyphosphate in combination with pomegranate rind extracts as a novel fire-retardant composition for cellulosic polymer
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For the first time, a mixed formulation of the sodium tri-polyphosphate (STPP) and the pomegranate rind extract (PRE) has been imparted to the cotton fabric to make it flame-retardant. It was found that the control, 3% STPP and PRE-treated cotton fabric showed the limiting oxygen index (LOI) value of 18, 21 and 26%, respectively, and completely burnt within 80, 120 and 420 s, respectively, in the vertical flammability test. On the contrary, (PRE + 2% STPP)-treated cotton fabric showed the LOI value of 35% with a specific char length of 30 mm. Thermo-gravimetric analysis of the control, PRE- and the 3% STPP-treated cotton fabric showed only 1–2% remaining char mass at 550 °C, whereas the (PRE + 3% STPP)-treated fabric registered the char mass retention of more than 10% at the said temperature. Cone calorimetric data showed that the peak heat release rate for the treated fabric has been reduced dramatically compared to the heat release value of the control cotton fabric.
KeywordsFire retardancy Pomegranate rind extract (PRE) Sodium tri-polyphosphate (STPP) Char length Thermo-gravimetry Cone calorimeter
The authors would like to thank the Central Institute of Research on Cotton Technology, Indian Council of Agricultural Research, Mumbai, Government of India, for sponsoring doctoral research work of the one of the authors (S. Basak) of this paper.
- 10.Samanta KK, Basak S, Chattopadhyay SK. Ecofriendly coloration and functionalization of textile using plant extract. In: Muthu S, editor. Roadmap to sustainable textiles and clothing. Singapore: Springer; 2014. p. 263–87.Google Scholar
- 11.Basak S, Samanta KK, Chattopadhyay SK, Narkar R. Self-extinguishable lingo-cellulosic fabric using banana pseudostem sap. Current Sci. 2015;108:372–7.Google Scholar
- 13.Wang X, Lu XC, Chan C. Effect of chicken feather protein based flame retardant on flame retarding performance of cotton fabric. J Appl Polym Sci. 2014;8:40584–9.Google Scholar
- 18.http://law.resource.org/pub/in/bis/S12/is.13501.1992.pdf. Accessed 15 July 2017.
- 19.http://law.resource.org/pub/in/bis/S12/is.11871.1986pdf. Accessed 19 Aug 2017.