A Comparative Study between the Filamentary and Glow Modes of DBD Plasma in the Treatment of Wool Fibers

摘要

In the present research it has been studied the effect of the DBD plasma on the treatment and modification of the surface a printing properities of the wool. Two types of DBD plasma have been investigated namely; the filamentary mode FDBD plasma and the glow mode GDBD plasma to reach the best condition of the treatment. Two discharge cells have been constructed one of them is for the generation of Atmospheric pressure glow discharge APGD and the other is for the generation of filamentary dielectric barrier discharge FDBD plasma. These two cells have the same dimensions except for the type of the dielectric barrier. In the APGD cell the dielectric barrier is a commercial porous fiber while in the FDBD cell the barrier is a Pyrex glass. It has been found that changing the type of the dielectric barriers acquires the discharge different properties. The efficiencies of these two types of discharge in the treatment of the textiles has been examined by treating the wool fabric with these two types of DBD plasma at different conditions of the current and treatment time. The induced changes in wool properties, such as whiteness index, wettability, tensile strength, elongation , surface morphology, printability and fastness properties, have been investigated. The surface characterization was performed using FTIR and SEM imaging. It has been discovered that GDBD plasma is more efficient than FDBD because of not only its homogeneity but also the high concentration of nitrogen excited species that are the responsible for the surface activation of the textile.