Scouring and Bleaching on One Bath for Tussah Silk

摘要

In this paper the one bath process of scouring and bleaching was applied to degum and bleach tussah silk. In this process degumming and bleaching of tussah silk was achieved only through one step. The effects of salt, decolorizer, treat time and temperature on whiteness, degumming rate and break strength were investigated. The optimal degumming and bleaching condition was that the concentration of Na_2SiO_3 salt was 10 o.w.f.%, concentration of hydrogen peroxide was 10 o.w.f.%, the scouring and bleaching time was 40 min and temperature was 95°C. Under the optimal scouring and bleaching condition the whiteness of tussah silk was 82, degumming rate was 11.5% and the breaking strength was 370 N.