Optimization Of Bleaching Parameters By Whiteness Index And Bursting Strength Of Knitted Cotton Fabric
Abu Naser Md. Ahsanul Haque, Md. Azharul Islam
Index Terms: Bursting strength, Whiteness index, Parameters, Bleaching, Time, Temperature, Concentration.
Abstract: The study comprises the effect of different bleaching parameters on scoured single jersey cotton fabrics. Three different concentrations (1.8 g/L, 2.0 g/L and 2.2 g/L) taken from 5% stock solution of hydrogen peroxide were considered for the experiment. In each concentration, bleaching was performed in four individual temperatures (78°C, 88°C, 98°C and 108°C). In each of the temperatures bleaching were continued for four individual time period (20, 30, 40 and 50 minutes). The weight of sample fabric was 12.5 grams and 1:10 liquor ratio was maintained in each operation. The bleached samples were tested in a reflectance spectrophotometer (datacolor 650) and also their bursting strengths were found from an Autoburst instrument following ISO 13038-1 method. The results show that bursting strength and whiteness index have an inverse relation between themselves. For the nominated concentrations of peroxide, 88°C to 98°C temperature with 30 to 40 minutes time duration is suggested as the optimum bleaching parameter for knitted cotton fabric.
 S. M. F. Kabir, M. I. Iqbal, P. P. Sikdar, M. M. Rahman and S. Akhter, “Optimizations of parameters of cotton fabric whiteness”, European Scientific Journal, vol. 10, no. 36, pp. 200-210, 2014.
 D. Saravanan and T. Ramachandran, “Bleaching of cotton fabrics using hydrogen peroxide produced by glucose oxidase”, Indian Journal of Fibre & Textile Research, vol. 35, pp. 281-283, 2010.
 S. B. Abdul and G. Narendra, “Accelerated Bleaching of Cotton Material with Hydrogen Peroxide”, J Textile Sci Eng, vol. 3:140, doi:10.4172/2165-8064.1000140, 2013.
 E. R. Trotman, “Dyeing and chemical technology of textile fibres”, Charles Griffin & Co. Ltd, pp. 239-240, 1975.
 N. M. Saraf and D. V. Alat, “Six Blind Men and an Elephant – The Story of Stabiliser”, International Dyer, vol. July, pp. 28-32, 2005.
 E. P. A. Kumbasar, A. E. Körlü and C. Can, “The effects of activator on whiteness and hydrophility during the hydrogen peroxide bleaching”, TEKSTİL ve KONFEKSİYON, vol. 1/2011, pp. 50-57, 2011.
 N.P. Sonaje and M.B. Chougule, “comparison of whiteness index of cotton fabric bleached with recycled wastewater, International Journal of Innovative Research in Science, Engineering and Technology, Vol. 2, Issue 8, pp. 3946-3951, 2013.
 M. Morshed, A. Y. M. A. Azim, A. A. Mukthy and S. M. A. Hoque, “Effect of scouring and bleaching treatment on knitted cotton fabrics for economic study”, vol. 10, no. 34, pp. 375-389, 2014.