摘要
采用新型纤维素酶UTA-977对全棉针织物进行抛光染色一浴处理,探讨了p H值、温度对UTA-977酶活力的影响,以及Na_2SO_4对UTA-977抛光效果的影响,并将UTA-977与市售纤维素酶热稳定性能对比。测试了织物的色差、质量损失率、强力损失率。结果表明,UTA-977的最适温度为60℃,最适p H值为6.0;稀释液在60℃条件下处理60 min,活力仍保持94%,具有较好的稳定性;加入Na_2SO_4能提升其对织物抛光时的质量损失率,Na_2SO_4浓度为10 g/L时,质量损失率为1.8%;UTA-977的浓度为1.0 g/L时,ΔΕ小于0.8,达到染色标准,抛光效果达到4~5级,强力损伤均小于15%。
The cotton knitting fabric is treated by the process of dyeing and biopolishing in the one bath with new neutral cellulase UTA-977, the influences of pH value, temperature on the activity of cellulase UTA-977 as well as Na2SO4 on polishing effect were studied. The thermal stability of cellulase UTA-977 with commercially available cellulase was compared, and the color difference, fabric mass loss and strength loss were tested. The re- suhs show that the optimum temperature is 60 ℃ and pH value is 6.0. Cellulase UTA-977 has excellent thermosta- bility that the enzyme activity still remain 94% when its diluted solution is treated 60 minutes at 60 ℃. Na2SO4 helps to improve the mass loss of cotton knitting fabric when treated by cellulase UTA-977, the mass loss is 1.8% when the concentration of Na2SO4 is 10 g/L. Cellulase UTA-977 has minimum effect on color intensity and lower strength loss of fabric, the △E is less than 0.8 with the concentration of UTA-977 is 1.0 g/L, it can meets dye- ing requirement,with the strength loss is less than 15% and polishing effect up to 4~5 level.
出处
《针织工业》
2017年第8期52-55,共4页
Knitting Industries