Optimization of dyeing condition for wool/cotton union fabric with direct dye using box-behnken design |
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Authors: | L Ammayappan D B Shakyawar N P Gupta |
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Institution: | (1) Color Control and Color Reproduction Department, Institute for Colorants, Paint and Coating, Tehran, Iran |
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Abstract: | Wool/cotton union fabric was dyed with a direct dye in union shade. The dyeing was performed in a single bath in relation
to four factors: leveling agent (Lyogen SMKI, 0–1.5 % oww), electrolyte (sodium sulfate, 0–10 %), dyeing temperature (85–95
°C), and dyeing time (15–60 min). The dyeing was characterized by dye bath exhaustion (%), color strength (K/S value), washing
fastness, and light fastness of dyed sample. Response surface analysis showed that the exhaustion of direct dye increased
with electrolyte, dyeing temperature, and dyeing time while the K/S value followed a linear shape with leveling agent and
dyeing temperature. An optimized recipe was formulated based on response surface strategy and numerical optimization solution. |
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