Exploration of flame retardant efficacy of cellulosic fabric using in-situ synthesized zinc borate particles
- PDF / 1,607,680 Bytes
- 13 Pages / 547.087 x 737.008 pts Page_size
- 64 Downloads / 175 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
ORIGINAL RESEARCH
Exploration of flame retardant efficacy of cellulosic fabric using in-situ synthesized zinc borate particles Hira Durrani . Veerender Sharma . Diksha Bamboria . Akshay Shukla . Santanu Basak . Wazed Ali
Received: 23 January 2020 / Accepted: 8 August 2020 Ó Springer Nature B.V. 2020
Abstract In the present context, synthesized zinc borate was demonstrated as a thermal resistant agent by applying it by in-situ method on the cotton fabric wherein zinc borate was synthesized from zinc nitrate and borax. Particle formation and its morphology were confirmed by particle size analyzer, and scanning electron microscopy analysis, respectively. It has been observed that zinc borate-cotton registered the high oxygen index value of 30% against 18% oxygen index of the control cotton fabric. Furthermore, zinc borate treated cotton fabric showed a black colour char and a
char length of 25 mm. The extent of heat generated from the treated cotton fabric was also found to be 75% less compared to the untreated cotton fabric. A thermo-oxidative decomposition experiment was performed by thermo-gravimetry analyzer and reported in detail. It was found that the treated fabric recorded more than 40% weight retention at a higher temperature. The surface morphology of the charred mass was also examined to fortify the dehydration mechanism of the treated sample.
H. Durrani V. Sharma D. Bamboria A. Shukla S. Basak (&) W. Ali (&) Department of Textile and Fibre Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India e-mail: [email protected] W. Ali e-mail: [email protected] S. Basak ICAR-Central Institute of Research on Cotton Technology, Matunga, Mumbai 400019, India
123
Cellulose
Graphic abstract
Keywords Zinc borate Cellulose Fire retardancy Cone calorimeter Thermo-gravimetry
Introduction Jute, cotton, flax, ramie, sisal and other cellulosic and lingo-cellulosic fibres are very much flammable because of the cellulose-based structure. The cellulose backbone is pyrolyzed at the range of 350 to 380 °C and produces toxic flammable gases. Flammable gases in the presence of heat and oxygen assist in the combustion process. Different inorganic and organic chemicals are available in the market for catalyzing the pyrolysis of cellulose and for restricting flammable gas formation (Horrocks et al. 2011; Alongi et al. 2013a; Basak et al. 2014; Alongi et al. 2015). Most of them work by a heat sink, heat barrier and condensed phase mechanism. Antimony in combination with halogen (worked in vapor phase mechanism) is also very much popular in this field (Alongi et al. 2012, 2014; Arputharaj et al. 2017). Indeed, these chemicals have been applied to the cotton fabric by
123
back coating mechanism for maintaining the physical properties and hand value of the treated textile material. Halogen-antimony and phosphorous-nitrogen combinations are more effective in terms of fire retardancy when imparted on the cotton fabric. From last f
Data Loading...
