Dye-Free Coloration in Dyeing and Printing of Tussah Silk Based on PHBA

Dye-free coloration in dyeing and printing for tussah silk were studied in different conditions. The optimal processes of dye-free and printing has been got. The optimal process of dye-free was PHBA1.5%, acid 14%, 60°C for 30 min, then add H2O2 for oxidation. And the optimal printing process of dye-free was PHBA2.0%, acid 18%, steam for 20 min after being printed. Colored and printed tussah fabric reactions occurred in the fabric itself, so the mechanical properties of chromogenic fabric unchanged almost, which had excellent color fastness and levelness.