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Enzymatically grafted phosphorus-containing chitosan oligosaccharide based inflaming retarding finishing method of protein fiber product

A protein fiber, glycokinase catalyzed chitosan oligosaccharide technology, applied in fiber treatment, biochemical fiber treatment, enzyme/microbial biochemical treatment, etc., can solve problems such as high energy consumption, yellowing, and large fiber damage, and achieve reaction efficiency High efficiency, low finishing energy consumption, and the effect of avoiding fiber damage

Active Publication Date: 2017-07-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for flame-retardant finishing of protein fiber products based on enzymatically grafted phosphorus-containing chitosan oligosaccharides. Using the present invention can improve the flame retardancy of protein fiber products under mild conditions and solve the problem of traditional chemical methods. Technical problems of high energy consumption, large fiber damage and serious yellowing in combustion finishing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The selected protein fiber product of this implementation is real silk fabric, and carries out flame-retardant finishing with the method mentioned in the present invention;

[0023] (1) Silk fabric pretreatment: treat the silk fabric with 2 g / L of disodium edetate, 5 g / L of urea, and 0.5 g / L of penetrant at 30° C. for 2 hours;

[0024] (2) Tyrosinase catalyzed grafted chitosan oligosaccharide: After the silk fabric treated in step (1) was washed with water, it was treated with tyrosinase and chitosan oligosaccharide, wherein tyrosinase 2U / mL, chitosan oligosaccharide 2.5g / L, treatment temperature 40°C, pH 6.5, treatment time 12 hours;

[0025] (3) Hexokinase catalyzed the phosphorylation of chitosan oligosaccharide: After the silk fabric treated in step (2) was washed, it was treated with hexokinase and adenosine triphosphate, wherein hexokinase 5U / mL, adenosine triphosphate 5g / L, cyclic adenosine monophosphate Glycoside 1g / L, temperature 25°C, pH 7.2, treatment time 8...

Embodiment 2

[0032] The selected protein fiber product of this implementation is a woolen fabric, and the flame-retardant finishing is carried out with the method mentioned in the present invention;

[0033] (1) Pretreatment of woolen fabric: treat the woolen fabric with 4 g / L of disodium edetate, 6 g / L of urea, and 1 g / L of penetrant at 30° C. for 2 hours;

[0034] (2) Tyrosinase catalyzed grafting of chitosan oligosaccharide: After the wool fabric treated in step (1) was washed, it was treated with tyrosinase and chitosan oligosaccharide, wherein tyrosinase 5U / mL, chitosan oligosaccharide 3.0g / L, treatment temperature 40℃, pH 6.5, treatment time 12 hours;

[0035] (3) Hexokinase catalyzed the phosphorylation of chitosan oligosaccharide: After the wool fabric treated in step (2) was washed, it was treated with hexokinase and adenosine triphosphate, wherein hexokinase 7.5U / mL, adenosine triphosphate 6g / L, cyclic phosphoric acid Adenosine 1.5g / L, temperature 30°C, pH 7.5, treatment time 8 ...

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Abstract

The invention discloses an enzymatically grafted phosphorus-containing chitosan oligosaccharide based inflaming retarding finishing method of a protein fiber product, and belongs to the technical field of textile biology. The inflaming retarding finishing method aims at solving defects that the fiber damage and the like are easily caused when a conventional chemical method is used for carrying out the inflaming retarding finishing on the protein fiber product. According to the inflaming retarding method, the pretreatment of the protein fiber product is first carried out; chitosan oligosaccharide is catalyzed to be grafted on the surface of a protein fiber through tyrosinase; the chitosan oligosaccharide is catalyzed to be phosphorylated by combining with hexokinase; the inflaming retarding effect is given to the protein fiber product. The inflaming retarding finishing method comprises the following specific steps of (1), carrying out the pretreatment on the protein fiber product; (2), catalyzing the protein fiber to graft the chitosan oligosaccharide by the tyrosinase; (3), catalyzing the chitosan oligosaccharide to be phosphorylated by the hexokinase; (4), carrying out water scrubbing and oven-drying post treatment. The protein fiber product treated by the inflaming retarding method is ameliorated in inflaming retarding performance and improved in mechanical performance; in comparison with the inflaming retarding finishing of the conventional chemical method, the inflaming retarding finishing, by which the enzymatically grafted phosphorus-containing chitosan oligosaccharide is adopted, of the protein fiber product is low in energy consumption.

Description

technical field [0001] The invention relates to a method for flame-retardant finishing of protein fiber products based on enzymatic grafting of phosphorus-containing chitosan oligosaccharides. Chemicalization, a method for imparting flame retardancy to protein fiber products, belongs to the field of textile biotechnology. Background technique [0002] As the number of applications of textiles in the field of home textiles continues to increase, fires caused by improper use of textiles are also increasing. Common natural fibers and chemical fibers are flammable to a certain extent, and will be cracked under high temperature conditions, and part of the generated gas can be mixed with air to form a flammable gas, which will burn when exposed to an open flame. In order to reduce the loss of people's lives and properties caused by fire, researchers have devoted themselves to the research of new fabric flame-retardant technology, developed special fibers and flame-retardant texti...

Claims

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Application Information

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IPC IPC(8): D06M13/432D06M13/342D06M15/03D06M16/00D06M13/453D06M101/10D06M101/12
CPCD06M13/342D06M13/432D06M13/453D06M15/03D06M16/003D06M2101/10D06M2101/12D06M2200/30
Inventor 王平余圆圆徐进袁久刚王强
Owner JIANGNAN UNIV
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