Preparation of Silk Film and Its Plasma Treatment for Better Dyeability

Abstract

Silk films were treated with O₂ and NH₃ plasmas for the improvement of dyeability. After O₂ and NH₃ plasma treatment of silk films, chemical composition of O and N on the surface increased, respectively. Also the concentration of acid and base functional groups increased. The silk films were insolubilized so that they could be dyed in an aqueous dye solution. The insolubilization affected the plasma-treatment effect in many surface properties. However, the color deepness of dyed silk film insolubilized after plasma treatment was greater than that of dyed film that plasma treated after insolubilization.