Method for carrying out real silk fabric anti-crease and antibacterial finishing by virtue of laccase-TEMPO process
A silk fabric and antibacterial finishing technology, which is applied in fiber treatment, animal fiber, textiles and papermaking, etc., can solve the problems of finishing waste liquid discharge polluting the environment, silk fibers are not firmly bonded, released and migrated to the surface of the body skin, etc., to achieve improved Combined fastness, ease of enzyme treatment conditions, and high grafting efficiency
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Embodiment 1
[0020] Carrying out grammage with the method mentioned in the present invention is 50g / m 2 Anti-wrinkle and anti-bacterial finishing of silk fabrics;
[0021] (1) Laccase-catalyzed oxidation of tyrosine residues in silk: soak the silk fabric in laccase solution for 1 hour, in which laccase is 7.5U / mL, temperature is 45°C, pH5;
[0022] (2) Chitosan reacts with quinone active groups in real silk: add chitosan (molecular weight: 200,000, degree of deacetylation: 95%) to 4g / L to the system in step (1), and the fabric is at 45°C and pH5 Dipping treatment for 2.5 hours;
[0023] (3) Laccase-TEMPO catalyzed silk-grafted chitosan: TEMPO was added to the system in step (2) to 5 g / L, and the fabric was soaked for 12 hours at 45° C. and pH 5;
[0024] (4) Post-washing treatment: the silk fabric treated in step (3) was washed at 30°C for 0.25 hours, and then the sample was taken out and dried at 45°C.
[0025] Sample 1: untreated silk fabric;
[0026] Sample 2: only process silk fabr...
Embodiment 2
[0030] Carrying out grammage with the method mentioned in the present invention is 46g / m 2 Anti-wrinkle and anti-bacterial finishing of silk fabrics;
[0031] (1) Laccase-catalyzed oxidation of tyrosine residues in silk: immerse the silk fabric in laccase solution for 0.5 hours, in which laccase is 15U / mL, temperature is 50°C, pH5.5;
[0032] (2) Chitosan reacts with quinone active groups in real silk: add chitosan (molecular weight: 200,000, degree of deacetylation: 90%) to 5 g / L in the system of step (1), fabric is at 50 DEG C, pH 5 conditions Dipping treatment for 3 hours;
[0033] (3) Laccase-TEMPO catalyzed silk-grafted chitosan: TEMPO was added to the system in step (2) to 7.5 g / L, and the fabric was dipped for 10 hours at 50° C. and pH 5;
[0034] (4) Post-washing treatment: the silk fabric treated in step (3) was washed at 50°C for 0.5 hour, and then the sample was taken out and dried at 45°C.
[0035] Sample 4: untreated silk fabric;
[0036] Sample 5: only proces...
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