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A method for water-repellent finishing of silk fabrics by biological enzymatic method

A silk fabric, biological enzymatic technology, applied in fiber processing, animal fibers, textiles and papermaking, etc., can solve the problems of fabric strength decrease, silk fabric yellowing, cloth color change and other problems, achieve low energy consumption, enzyme treatment The effect of mitigating conditions and process safety

Inactive Publication Date: 2018-01-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional water-repellent finishing process mostly uses fluorine-containing finishing agents, which are carried out by padding and drying. However, there are certain problems in the water-repellent finishing of silk fabrics. On the one hand, it will affect the feel or air permeability of silk fabrics. On the other hand, high temperature Baking (150-180°C) can easily make the silk fabric yellow, change the color of the fabric surface, and reduce the strength of the fabric

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Use degummed silk fabric (70g / m 2 ), carry out water-repellent finishing with the method mentioned in the present invention, and process step is as follows:

[0024] (1) Preparation of hexafluorobutyl acrylate emulsion: use 0.25% Tween 80 (polyoxyethylene nonionic surfactant) and 0.25% nonionic fluorocarbon surfactant as emulsifier, carry out hexafluorobutyl acrylate at 25°C The ester was stirred at high speed, and after emulsification for 0.5 hour, a hexafluorobutyl acrylate emulsion with a concentration of 5% was obtained;

[0025] (2) Horseradish peroxidase treatment of real silk fabrics: immerse the real silk fabrics in horseradish peroxidase and acetylacetone solutions, and add hydrogen peroxide dropwise to the solution under nitrogen protection; where horseradish peroxidase 5U / mL, acetylacetone 5g / L, hydrogen peroxide 8g / L, treatment temperature 50°C, pH 7, time 0.25 hours;

[0026] (3) Graft copolymerization of silk and fluorine-containing acrylate: Add the em...

Embodiment 2

[0032] Using degummed silk fabric (63g / m 2 ), carry out water-repellent finishing with the method mentioned in the present invention, and process step is as follows:

[0033] (1) Preparation of hexafluorobutyl methacrylate emulsion: use 0.5% Tween 80 (polyoxyethylene nonionic surfactant) and 0.5% nonionic fluorocarbon surfactant as emulsifier, carry out methylation at 25°C Hexafluorobutyl acrylate was stirred at a high speed, and after emulsification for 1 hour, a hexafluorobutyl methacrylate emulsion with a concentration of 4.5% was obtained;

[0034] (2) Horseradish peroxidase treatment of real silk fabrics: immerse the real silk fabrics in horseradish peroxidase and acetylacetone solutions, and add hydrogen peroxide dropwise to the solution under nitrogen protection; where horseradish peroxidase 10U / mL, acetylacetone 5g / L, hydrogen peroxide 9g / L, treatment temperature 50°C, pH 7, time 0.5 hours;

[0035] (3) Graft copolymerization of real silk and fluorine-containing acr...

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Abstract

The invention discloses a biological enzyme method for water repellent finish of real silk fabric. Tyrosine residues in fibroin of the real silk fabric are catalyzed by the aid of a horseradish peroxidase / hydrogen peroxide / diacetone system to generate phenoxy radicals, the phenoxy radicals and fluorinated acrylate monomers are subjected to graft copolymerization, the water repellent property of the real silk fabric is improved, and water repellent finish of the real silk fabric is realized with the biological enzyme method. The biological enzyme method comprises specific steps as follows: (1) preparation of a fluorinated acrylate emulsion; (2) treatment of the real silk fabric with horseradish peroxidase; (3) graft copolymerization of real silk and fluorinated acrylate; (4) after-treatment of the real silk fabric. Compared with a high-temperature padding and baking method and a traditional graft copolymerization method adopting ultraviolet light or microwave radiation, the method has higher graft copolymerization efficiency, the enzyme treatment condition is mild, the water repellent finish effect of the fabric is better, and the problems of reduction of strength of the fabric and yellowing of the surface of the fabric are solved.

Description

technical field [0001] The invention relates to a method for water-repellent finishing of real silk fabrics by biological enzymatic method, in particular to a method for catalyzing silk fibroin to generate active phenolic oxygen free radicals by means of horseradish peroxidase / hydrogen peroxide / acetylacetone system, and reacting with fluorine-containing acrylate The graft copolymerization of monomers improves the water repellency of silk fabrics and realizes the water repellency finishing of silk fabrics by biological enzymatic method, which belongs to the field of textile biotechnology. Background technique [0002] Silk is composed of sericin and silk fibroin. Sericin is dissolved by alkaline agent or hydrolyzed by protease during degumming treatment, while silk fibroin with high chemical stability is effectively retained. Silk fabrics are soft to the touch, elegant in luster, excellent in absorption, and have good wearing comfort; but on the other hand, silk fabrics also ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M14/06D06M13/127C08F289/00C08F220/22D06M101/12
CPCC08F289/00D06M13/127D06M14/06D06M2101/12C08F220/22
Inventor 王平邓超余圆圆王强范雪荣
Owner JIANGNAN UNIV
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