Color Reflectance Study of Decolorized Reactive Dyed Cotton Knitted Fabric by Ozone Plasma Treatment

Document Type

Conference Proceeding

Publication Date



ozone plasma, knitted fabric, color reflectance, reactive dye, color fading


Ozone plasma treatment is available to be applied on color modification and color fading due to ozone generating function. It is an environment friendly process that treats died cotton under dry condition in order to avoid chemical effluents. This study aims to investigate color reflectance of decolorized reactive dyed cotton knitted fabric by ozone plasma treatment. Reactive dyed cotton knitted fabrics with different color depths (0.5%, 1.5%, 3.0%) were prepared to be treated by various of plasma conditions, including different ozone concentrations (10%, 30%, 50%, 70%) controlled by adjusting "gas power output," water contents (35%, 45%) of fabric samples and ozone treatment durations (10 mins, 20 mins, 30 mins). The color fading effect is evaluated by the color reflectance percentage (R%) using spectrophotometer under illuminant D65. The effective decolorization in terms of high reflectance percentage was revealed from plasma treatment with higher ozone concentrations (50% and 70% ozone in air) and longer treatment duration (20 mins or above). However, the percentage of water content contained in the fabrics is shown to have insignificant relationship with the color fading effects.

Source Publication

International Conference on Engineering”, Science and Industrial Application, 22-24 August 2019, Tokyo, Japan

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