The dyer has always been faced with choices regarding which dye to use and which application process to choose. In previous years, the cost of the dyeing process and the fastness of the dyeings obtained were prime considerations. Today these basic needs have been supplemented by the need for high productivity in the dyehouse together with an awareness of the environmental impact of the dyeing p...

This first part of Chapter 5 covers the background to the development of reactive dyes, explains the history which led to their belated discovery and gives the reasons for their present importance. The nature of the dye-fiber bond is covered as well as the processes by which it is formed. The overall procedure for reactive batch dyeing, which involves the three steps of dyeing, fixation and was...

It is widely accepted that indigo dyes derived from Murex trunculus were used to produce the biblical dyes tekhelet and argaman. We describe a method of following the debromination of natural leucoindigos and their binding to wool using NMR spectroscopy. Debromination is observed prior to reaction with the wool and prior to oxidation. Binding to the wool is shown to occur prior to oxidation. NM...

We describe the fastest dyeing of TiO2 photo-electrodes for dye-sensitized solar cells reported to date (<2 min) at room temperature giving η = 7.5% for an N719-SQ1-CDCA mixture which is significantly higher than devices dyed for >12 h using the same dye mixture (η = 5.5%). Time-lapse photography has been used to monitor the ultra-fast co-sensitization. The data show significantly different dye...

With the development of dyeing wastewater treatment biotechnology, the advantages of bioaugmentation bacteria gradually catch people’s eyes. Therefore, its construction and application research has also attracted the attention of the majority of scholars. This article summaries the construction and application of bioaugmentation engineered bacteria used to treat dyeing wastewater in recent year...

The polyester (100%), cotton (100%) and Polyester / Cotton blend fabrics (65 / 35; 50 / 50 & 35 / 65) were treated with sodium hydroxide followed by hydrophilic finishing and dyeing to impart hygroscopic and dyeing characteristics. Then the finished fabric was tested for k/s value, fastness properties, wetting behaviour, water retention, wicking behaviour and static charge respectively. The sod...