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IJSTR >> Volume 4 - Issue 4, April 2015 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Optimization Of Bleaching Parameters By Whiteness Index And Bursting Strength Of Knitted Cotton Fabric

[Full Text]



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.



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