Study on analytical methods for quantifying the non‐adsorbed reactive dye forms in an exhausted dyebath
Reported herein are the results of an analysis of the compatibility of three methods for quantifying the non‐adsorbed forms of reactive dyes, in an exhausted dyebath, of the type monochlorotriazine/β‐sulphatoethylsulphone used in dyeing cellulosic fibres (cotton).
The first method is based on spectrophotometric analysis and involves measuring the absorbance of the residual dyebath (after the dyeing process), the second is based on colorimetric analysis and involves measuring the reflectance of the dyed fabric and the third is based on high‐performance
liquid chromatography. The purpose of the latter is to identify and quantify the non‐adsorbed dye forms in the residual dyebath. The calculated exhaustion values unequivocally prove the reliability and compatibility of these methods.
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Document Type: Research Article
Textile Chemistry Laboratory and Finishing, Finishing Department, High School of Industry Textile and Clothing (ESITH), PO Box 7731, Oulfa, Casablanca, Morocco
Chemistry Laboratory of Plants, Organic and Bioorganic Synthesis, Department of Chemistry, University Mohammed V-Agdal, Faculty of Sciences, PO Box 1014, Rabat, Morocco
Publication date: 2012-06-01