Affiliation:
1. Mehran University of Engineering and Technology
Abstract
Abstract
In our study, cellulose electrospun nanofibrous mats (ENMs) were dyed with synthetic indigo dyes by continuous method. We have used the industrial scale dyeing procedure (pre-wetting, dyeing and washing-off steps). The effect of pH, concentration of sodium hydrosulphite, dye bath temperature and concentration of indigo dyes on the color yield (K/S) were optimized. Excellent K/S of dyed cellulose ENMs were achieved (reached to 13) with good colorfastness properties. For comparison, aniline-free synthetic indigo dyes were applied on the cellulose ENMs. The dyeing effluent was measured for pH, TDS and COD results. Considerable ecological merits have been found for dyeing effluent of aniline-free synthetic indigo dyes in comparison to the synthetic indigo dyes. Furthermore, the dyed samples were characterized by SEM analysis, ATR-FTIR spectroscopy.
Publisher
Research Square Platform LLC
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