A comparative study of color strength and color fastness among different cellulosic fabrics

Abstract

Reactive dyes are very popular for cellulosic fiber because they are environmentally safe and having well overall fastness properties. The application of those dyes necessary in a very high intentness of salt. The salt released from fiber dyeing rising salinity in flow-out water stream which has a negatory influence on environmental ecology. Here we have done reactive dye 1% shade blue color in 100% cotton, 100% viscose & 50/50 cotton/viscose blend fabric in exhaust dyeing method. After getting our desired shade & color we checked 3 sample color strength value by spectrophotometer. After the checking of color strength value, we calculated this value in kubelka monk theory & got color strength is better for 100% viscose than 100% cotton & 50/50 cotton viscose fabric. Then we have done color fastness test 3 of sample. Color fastness to rubbing, color fastness to wash, color fastness to water & colr fastnes to perspiration. Here we got, color fastness to rubbing of 100% cotton is better than 100% viscose & 50/50 cotton/viscose fabric. Color fastness to water is better for 100% viscose than 100% cotton & 50/50 cotton/viscose. Color fastness to washing is better for 100% cotton & color fastness to perspiration (acid medium) result is better for 100% viscose & color fastness to perspiration (alkali medium) result 100% cotton is better.