Wearability of linen fabric via UV-induced grafting of acrylic acid

The linen fabric was modified via UV-induced grafting of acrylic acid to improve its dyeability.The dyeability,tensile properties,stiffness and air permeability of UV grafted linen fabrics were studied.Scanning electron microscope(SEM) and X-ray diffraction(XRD) were employed to analyze the change of serviceability of UV grafted linen fabrics.The results showed significant improvement on dye uptake and color depth,enhancement on tensile properties and stiffness,and decrease in air permeability.With grafting pecentage increasing,the dyeuptake,color difference and stiffness increased,but the air permeability decreased.At the grafting percentage of 8%,good dyeing effect could be achieved.A layer of grafted poly(acrylic acid) was formed on the surface of linen fabric and crosslinking among fibers was found in SEM pictures.XRD data implied that the crystallinity of UV grafted linen fabric decreased.