Abstract
In this study, we investigated the computer colour matching (CCM) of cotton fabrics dyed with reactive dye using the octane-assisted reverse micellar approach. The aim of this study is to evaluate the colour quality and compare the accuracy between CCM forecasting and simulated dyeing produced by conventional water-based dyeing and octane-assisted reverse micellar dyeing. First, the calibration of dyeing databases for both dyeing methods was established. Standard samples were dyed with known dye concentrations. Computer colour matching was conducted by using the colour difference formula of International Commission on Illumination (CIE) L*a*b*. Experimental results revealed that the predicted concentrations were nearly the same as the expected known concentrations for both dyeing methods. This indicates that octane-assisted reverse micellar dyeing system can achieve colour matching as good as the conventional water-based dyeing system. In addition, when comparing the colour produced by the conventional water-based dyeing system and the octane-assisted reverse micellar dyeing system, the colour difference (ΔE) is ≤1, which indicates that the reverse micellar dyeing system could be applied for industrial dyeing with CCM.
Highlights
Dyeing textile products has been regarded as a significant consumer of water and producer of effluents [1,2] and the addition of large amounts of salts is required in water-based reactive dye dyeing processes [3]
The results revealed that the reverse micellar dyeing system in octane could have a better recipe prediction than the conventional water-based method
The experimental results showed that computer colour matching (CCM) was applicable in the conventional water-based dyeing system, and in the non-aqueous octane-assisted reverse micellar dyeing system
Summary
Dyeing textile products has been regarded as a significant consumer of water and producer of effluents [1,2] and the addition of large amounts of salts is required in water-based reactive dye dyeing processes [3]. The cost of D5 is relatively high and in this study, octane (C8 H18 ), which is commercially available and gives a higher colour yield when applied in reverse micelle cotton reactive dyeing, [18] was used as the non-aqueous medium for the reverse micellar dyeing of cotton fabrics. There are several tasks in this study: (a) establishing a dyeing database for both conventional water-based dyeing and octane-assisted reverse micellar dyeing for calibration purposes; (b) dyeing standard samples with known concentrations of reactive dyes using conventional water-based dyeing and octane-assisted reverse micellar dyeing methods; (c) conducting computer colour matching to generate dyeing recipes with the use of different colour formulae; and (d) comparing the differences between conventional water-based dyeing and octane-assisted reverse micellar dyeing
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