ENHANCEMENT OF DYE-ABILITY OF VISCOSE FABRIC VIA MODIFICATION WITH FIBROIN REGENERATED FROM WASTE SILK COCOONS

摘要

This work demonstrated the possibility of enhancing the dye-ability of viscose fabric via surface modification with silk fibroin. Herein, silk fibroin from waste Bombyx mori cocoons was degummed and then dissolved in a lithium bromide/ethanol/water solution. The silk fibroin solution was purified using the QuixStand Benchtop system equipped with the microfiltration and ultrafiltration of hollow-fiber cartridges to gather the fibroin segments with molecular weight over 10 kDa. The obtained silk fibroin was coated onto a viscose woven fabric via the padding method. The fibroin treated and untreated viscose fabrics were stained with C.I acid blue 203 (0.5% on the weight of fabric (wof) and dyed with C.I reactive yellow 176 (0.1, 0.5 and 1.0 %wof). The presence of silk fibroin on the viscose fabric was confirmed by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) analysis and color measurement. The dyed treated viscose fabrics revealed a higher color strength (K/S) than that of the dyed untreated ones at the same initial dye concentration. The color fastness to washing of the fibroin treated and untreated viscose fabrics after dyeing with the reactive dye were good to very good. The physical analysis results indicated a decrease in the air permeability and the horizontal wicking values of the silk fibroin treated fabrics compared to the untreated fabrics.