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Critical solutions in the dyeing of cotton textile materials

Over the decades there have been several papers on the coloration of cotton-based textiles. The number of articles dealing with the processing of cotton, including preparation, dyeing, and finishing, may be in the thousands. An investigation of the possible causes of problems occurring in the coloration of textiles revealed that a comprehensive review of case studies and scientific analysis would be a welcome addition to the already rich pool of knowledge in this area. | CRITICAL SOLUTIONS IN THE DYEING OF COTTON TEXTILE MATERIALS R. Shamey and T. Hussein doi 10.1533 tepr.2005.0001 Abstract Over the decades there have been several papers on the coloration of cotton-based textiles. The number of articles dealing with the processing of cotton including preparation dyeing and finishing may be in the thousands. An investigation of the possible causes of problems occurring in the coloration of textiles revealed that a comprehensive review of case studies and scientific analysis would be a welcome addition to the already rich pool of knowledge in this area. Key words Cotton troubleshooting pretreatment dyeing dyes colorants. 1. INTRODUCTION Cotton is the backbone of the world s textile trade 1 . It has many qualities 2 and countless end uses 3 which make it one of the most abundantly used textile fibres in the world 4 . It is a seed hair of plant of genus Gossypium 5 the purest form of cellulose found in nature. However cotton is one of the most problematic fibres as far as its general wet processing or dyeing is concerned. Quite frequently the problems in dyed cotton materials are not due to the actual dyeing process but due to some latent defects introduced from previous production and processing stages. Often the root-cause s of a problem in the dyed material can be traced as far back as to the cotton field. This monograph will address problems in the dyeing of cotton textile materials in various forms. An overview of various textile operations for cotton will be given in the beginning. Then various key stages and factors involved in the production of dyed cotton textile materials will be described in detail and problems originating at each stage will be summarised. 1.1 Overview of Textile Operations for Cotton The textile industry is comprised of a diverse fragmented group of establishments that receive and prepare fibres transform fibres into yarn convert the yarn into fabric or related products and dye and finish these materials at