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In the study, polyester fabrics were modified by dielectric barrier discharge (DBD) and then dyed with different classes of natural (henna, madder, lotus, and matricaria) and synthetic (acidic, basic, and disperse) dyes. The approach introduced in this work comprises the formation of functional groups on the surfaces of the polyester fabrics by using atmospheric pressure plasma.

The results show that DBD modification on the surface of fabrics improved their dyeability with the extent of improvement higher in natural dyes than in synthetic ones. Moreover, without using water and chemical additives, atmospheric pressure plasma makes the process of dyeing eco- friendly. (SH)

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