Improvement of the graft and dyeability of linen by DBD treatment in ambient air

Plasma treatment can effectively modify the surface characteristics of fabrics, such as wettability, dyeability and adhesion strength. In this paper, dielectric barrier discharge (DBD) in ambient air is applied to modify linen surface and improve the grafting efficiency and dyeability. Scanning electron microscope (SEM) shows that DBD treatment can effectively change the surface morphology of the treated linen. Raman spectrum, SEM and Fourier transform infrared spectroscopy conform that graft reaction certainly takes place on the DBD-treated linen surface. The dyeability improves with the increase of grafting efficiency, which shows that graft has a great effect on dyeability. For the grafting efficiency and dyeability, the optimal DBD treatment time is 30 s in this experiment. The possible reason may be that, with the increase of the treatment time, the surface degradation will become strong, which will lead to the invalidation of some already modified results.