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Protein fiber antibacterial finishing method based on enzymatic grafting copolymerization

A protein fiber, antibacterial finishing technology, applied in fiber treatment, biochemical fiber treatment, enzyme/microorganism biochemical treatment, etc., can solve the problem that the finishing agent is easily released from the surface of the fiber and migrates to the surface of the skin, and the combination of the finishing agent and the fiber is not firm. , protein fibers are easily damaged and other problems, to avoid protein fiber damage, good antibacterial finishing effect, good antibacterial effect

Active Publication Date: 2019-01-29
无锡市奥菲超细织物有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the above-mentioned antibacterial finishing method endows the protein fiber with a certain antibacterial effect, there are also some problems that the combination of the finishing agent and the fiber is not firm, the protein fiber is easily damaged during high-temperature baking, the fiber is easy to yellow or the fabric feels worse, and the finishing agent is easy to be damaged. Disadvantages such as release from the surface of the fiber and migration to the surface of the body skin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Carry out the antibacterial finishing of real silk fabrics with mulberry silk as raw material with the method mentioned in the present invention;

[0034] (1) Oxidation pretreatment: immerse the silk fabric in a hydrogen peroxide solution, wherein the hydrogen peroxide is 2g / L, pH 8, the treatment temperature is 40°C, the time is 15min, and the bath ratio is 1:40;

[0035] (2) Enzyme-catalyzed amino acid conversion: soak the silk fabric treated in step (1) in the tyrosine phenol lyase treatment liquid, wherein tyrosine phenol lyase 10U / mL, phenol 2.5g / L, pyridoxal phosphate 0.5g / L, ammonium chloride 0.5g / L; treated at 40°C and pH 7 for 4 hours, bath ratio 1:40; after the treatment, the silk fabric was washed and dried;

[0036] (3) Graft copolymerization of enzymatic silk and vinyl-containing quaternary ammonium salt monomers: immerse the treated silk in step (2) in dimethyl diallyl ammonium chloride solution, add horseradish peroxide enzyme and acetylacetone, add hydr...

Embodiment 2

[0042] Carrying out wool fabric antibacterial finishing with the method mentioned in the present invention as raw material;

[0043] (1) Oxidation pretreatment: soak wool fabric in hydrogen peroxide solution, wherein hydrogen peroxide is 8g / L, pH 10, treatment temperature is 55°C, time is 45min, bath ratio is 1:40;

[0044](2) Enzyme-catalyzed amino acid conversion: soak the wool fabric treated in step (1) in tyrosine phenol lyase solution, wherein tyrosine phenol lyase 100U / mL, phenol 10g / L, pyridoxal phosphate 5g / mL L. Ammonium chloride 2g / L; treat for 36 hours at 45°C and pH 8.5, bath ratio 1:40; wash and dry the woolen fabric after the treatment;

[0045] (3) Graft copolymerization of enzymatic wool and vinyl-containing quaternary ammonium salt monomers: soak the wool fabric treated in step (2) in (3-acrylamidopropyl) trimethyl ammonium chloride solution, add spicy root peroxidase and acetylacetone, add hydrogen peroxide under the protection of nitrogen to promote the gra...

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PUM

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Abstract

The invention discloses a protein fiber antibacterial finishing method based on enzymatic grafting copolymerization. Protein fiber antibacterial finishing is performed by using of tyrosine phenol lyase for catalyzing serine in protein fiber macromolecules to be converted into tyrosine and use of horseradish peroxidase for catalyzing graft copolymerization of the tyrosine in protein fiber and vinyl-containing quaternary ammonium salt monomers. The method specifically comprises the following steps: (1) oxidizing pretreatment; (2) enzyme-catalyzed amino acid conversion; and (3) enzyme-promoting graft copolymerization of the protein fiber and the vinyl-containing quaternary ammonium salt monomers. Compared with a traditional method for carrying out the protein fiber antibacterial finishing through padding baking, high-temperature bonding or coating finishing, the method has the advantages of being low in energy consumption, good in antibacterial effect and small in fiber damage.

Description

technical field [0001] The invention relates to an antibacterial finishing method for protein fibers based on enzymatic graft copolymerization, which belongs to the field of textile biotechnology. Background technique [0002] Protein fiber has good hand feel and hygroscopicity. During the use of textiles processed with protein fiber, human sweat, sebum and other secretions are easy to adhere to the surface of the fiber, becoming a good source of nutrition for various microorganisms. Under certain external conditions (such as humidity, temperature, etc.), microorganisms grow rapidly, multiply, and spread diseases through various channels, threatening the survival and development of human beings themselves. On the other hand, protein fiber is a kind of natural protein. Under appropriate temperature and humidity conditions, it is easy to become the nutrient of microorganisms such as bacteria and mold, so that the fiber products will become mildewed and even become the carrier ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/06D06M11/50D06M16/00D06M101/10
CPCD06M11/50D06M14/06D06M16/003D06M2101/10
Inventor 王平郭晓晓王琳崔莉邓超
Owner 无锡市奥菲超细织物有限公司
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