Sodium lignin sulfonate: a bio-macromolecule for making fire retardant cotton fabric
- 30 Downloads
Sodium lignin sulfonate (SLS) has been explored as a fire retardant finishing agent on cotton fabric. 30% [w/v] SLS treated cotton fabric has registered LOI value of 28.5 with minimum char length of 4 cm (self-extinguishment) whereas control cotton fabric was found to burn out with flame and afterglow within 1 min. Thermo-gravimetry of the treated cotton fabric showed 35% mass retention at 500 °C while only 8% char mass was left for the control cotton fabric at the said temperature. Volatile species liberated during burning were analyzed by GC–MS technique which demonstrated the restriction of flammable gas formation from the SLS treated fabric. Char mass left after burning also has been characterized in terms of its morphology, elemental analysis, etc. Moreover, it has also been proven that SLS treatment imparts a natural attractive yellow color, UV protective property to the treated fabric without altering physical strength of the fabric which can be considered as an added advantage over flame retardant effect.
KeywordsCotton Sodium lignin sulfonate (SLS) Flammability Thermo-gravimetry Char UV resistance
The authors are grateful to Technology Development and Transfer (TDT) Division, Department of Science and Technology, The Govt. of India for funding (File No. DST/TDT/SHRI-08/2018) this research work under ‘Science and Heritage Research Initiative (SHRI)’ Scheme.
- Azis MM, Rachmadi H, Wintoko J, Yulian AT, Hasokowatki W, Purwono S, Rochamandi W (2016) On the use of sodium lignosulfonate for enhanced oil recovery. IOP Conf Ser Earth Environ Sci 65:1–7Google Scholar
- Basak S, Samanta KK, Chattopadhyay SK, Narkar R (2015) Self-extinguishable ligno-cellulosic fabric made by banana pseudostem sap. Curr Sci 108:372–383Google Scholar
- Basak S, Samanta KK, Chattopadhyay SK, Narkar R, Parmar MS (2017) Wastage spinach leaf: Source for making self-extinguishable cellulosic substrate. Ind J Fibre Text Res 42:215–222Google Scholar
- Brebu M, Vasile C (2010) Thermal degradation of lignin: a review. Cell Chem Technol 44:353–363Google Scholar
- https://www.greenagrochem.com/products/sodium-lignosulfonate/. Retrieved 25 May 2019
- Northey RA (2002) The use of lignosulfonate as water reducing agent in the manufacture of gypsum wall board in chemical modification, properties and usage of lignin. In: Hu TQ (ed) Chemical modification, properties and usage of lignin. Kluwer Academic / Plenum Publishers, pp 139–150Google Scholar
- Quian Y, Xueqing Q, Zhu S (2014) Lignin: a nature inspired sun blocker for broad spectrum sunscreens. Green Chem 17:35–41Google Scholar
- Zhang J, Fleeury E, Chen Y, Brook MA (2015) Flame retardant lignin based silicon composites. RSC Adv 126:365–373Google Scholar