Detailed Study on Octane-Assisted Reverse Micellar Dyeing of Cotton with Reactive Dyes

Textile dyeing products have been known to be a major water user and effluent producer, and the addition of large amounts of salts in water-based reactive dyeing processes is needed. In this research, using the octane-assisted reverse micellar technique, we investigated the computer colour matching (CCM) of cotton fabrics colored with reactive dye. The objective of this study is to assess the quality of the color and compare the accuracy between the prediction of CCM and simulated dyeing provided by traditional water-based dyeing and reverse micellar dyeing assisted by octane. First, the calibration of dyeing databases was developed for both methods of dyeing. Standard samples with documented concentrations of dye were dyed. By using the color difference formula of CIE L*a*b*, machine color matching was performed. Experimental results showed that for both dyeing methods, the predicted concentrations were almost the same as the anticipated known concentrations. The results showed that CCM was valid in the non-aqueous octane-assisted reverse micellar dyeing method, not only in the traditional water-based dyeing system. This means that the reverse micellar dyeing method that is octane-assisted will achieve color matching as well as the traditional water-based dyeing system. In addition, the colour difference ( ▵E) is ≤ 1 when comparing the colour created by the traditional water-based dyeing system and the octane-assisted reverse micellar dyeing system, suggesting that the reverse micellar dyeing system could be implemented with CCM for industrial dyeing.

Author (s) Details

Alan Yiu-lun Tang
Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.

Cheng-hao Lee
Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.

Yanming Wang
Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.

Chi-wai Kan
Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.

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