An approach to the dyeing of semi dull and cationic dye able polyester with disperse dye and comparison with cotton polyester blend dyeing process

This paper puts forth the dominance of SD polyester over the cellulosic cotton fiber. SD polyester being capable of adopting the appearance of cotton fiber and cheaper than cotton fiber that's why cotton fiber is chosen for this paper. The fabric composition consists of 50% of SD polyester and 50% of CD able polyester fiber. The exhaust dyeing process is followed at high temperature. Both SD and CD polyester were dyed at the same time duration of 40 minutes and temperature were 135C and 90C respectively. For this purpose, experiments were done on 80/20 cotton/polyester and 50/50SD/CD polyester which shows the same results. The results were based on the parameters like GSM, fastness, stitch length and a same dying recipe. After completing the dying process the parameter like shrinkage tolerance (3-5) %, shade matching 3%, wash fastness at 60C (4-5) %, wet rubbing fastness (4-5) %, dry rubbing fastness (4-5) %, spirality of fabric 3% (Max) were found. The only drawback of 50/50SD and CD polyester fabric is the coziness of the fabric as cotton fabric is better on this. When all the dyeing parameters and dying process is considered; SD and CD polyester shows better performance than cotton.