Colour Fading of Textile Fabric by Plasma Treatment

Table 2

Colour properties.

Fabric sample	𝐾/𝑆 Sum	𝐿^∗	𝑎^∗	𝑏^∗	Δ𝐸^#
Untreated	435.63	22.94	1.66	−3.20	—
APP-induced colour fading	387.23	25.55	1.49	−2.63	2.68
Enzymatic colour fading	383.95	25.38	1.72	−3.78	2.51

 ^#Δ𝐸 = [(Δ𝐿^∗)² + (Δ𝑎^∗)² + (Δ𝑏^∗)²]^1/2.
 Δ𝐿^∗ = 𝐿^∗_{treatedfabric} –  𝐿^∗_{untreatedfabric}.
 Δ𝑎^∗ = 𝑎^∗_{treatedfabric} –  𝑎^∗_{untreatedfabric}.
 Δ𝑏^∗ = 𝑏^∗_{treatedfabric} –  𝑏^∗_{untreatedfabric}.