Colour management in circular economy: decolourization of cotton waste
Research output: Contribution to journal › Article › Scientific › peer-review
- VTT Technical Research Centre of Finland
- Fortum Oyj
Design/methodology/approach – The research included the use of different dye types in a cotton dyeing process, the process for decolourizing and the results. Two reactive dyes, two directdyes and one vat dye were used in the study. Four chemical treatment sequences were used to evaluate colour removal from the dyed cotton fabrics, namely, HCE-A, HCE-P-A, HCE-Z-P-A and HCE-Y-A.
Findings – The objective was to evaluate how different chemical refining sequences remove colour from direct, reactive and vat dyed cotton fabrics, and how they in fluence the specific cellulose properties. Dyeing methods and the used refining sequences in fluence the degree of colour removal. The highest achieved final brightness of refined cotton materials were between 71 and 91 per cent ISO brightness, depending on the dyeing method used.
|Number of pages||19|
|Journal||Research Journal of Textile and Apparel|
|Publication status||Published - 29 May 2019|
|MoE publication type||A1 Journal article-refereed|
- Circular economy, Colour management, Decolourization, Fibre recycling