Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving bleaching effect of cotton and blended fabrics under multienzyme coupling action

A technology of blended fabrics and fabrics, applied in the field of biological bleaching, which can solve the problems of chemical additives polluting the environment, poor enzyme bleaching effect, and large fiber damage, etc., and achieves the effects of wide adjustable range, wide adjustable space, and cost reduction

Inactive Publication Date: 2013-01-30
TIANJIN POLYTECHNIC UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an improved finishing method for biological enzyme bleaching of cotton and its blended fabrics, so as to solve the problems of environmental pollution caused by chemical additives, large damage to fibers caused by alkali treatment, poor effect of enzyme bleaching and high cost in the prior art. advanced defects

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving bleaching effect of cotton and blended fabrics under multienzyme coupling action
  • Method for improving bleaching effect of cotton and blended fabrics under multienzyme coupling action
  • Method for improving bleaching effect of cotton and blended fabrics under multienzyme coupling action

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Pre-wash the cotton plain gray fabric (linear density 24.3tex×24.3tex, fabric density 252 / 10cm×231 / 10cm) in a water bath at 80-95°C for 20-30 minutes to ensure sufficient wetting of the fabric; then , put the pre-washed fabric in the treatment solution of amylase and glucoamylase for dipping and desizing treatment. The mass concentration of amylase in the treatment liquid is 1g / L, the mass concentration of glucoamylase is 1g / L, the bath ratio is 1:50, the immersion temperature is 60-70°C, and the immersion time is 1h. After the treatment, take it out, wash it with hot water, wash it with cold water, and dry it in a blast oven at 60°C; finally, use 9g / L glucose oxidase to catalyze the desizing residue, and adjust the pH value of the residue to 10. Bleaching is carried out in the treatment residue with a bath ratio of 1:50, the bleaching temperature is 90° C., and the bleaching time is 1 hour. Take out the water for washing, and dry the finished fabric in a blast oven at ...

Embodiment 2

[0035] Pre-wash the cotton plain gray fabric (linear density 24.3tex×24.3tex, fabric density 252 / 10cm×231 / 10cm) in a water bath at 80-95°C for 20-30 minutes to ensure sufficient wetting of the fabric; then , put the pre-washed fabric in the amylase treatment solution for dipping and desizing treatment. The mass concentration of amylase in the treatment liquid is 1g / L, the bath ratio is 1:50, the soaking temperature is 60-70°C, and the soaking time is 1h. After the treatment, take out the fabric, wash it with hot water and cold water, and dry it in a blast oven at 60°C; then, add 1g / L glucoamylase dropwise to the residual liquid after desizing, and dry it at 60-70°C Treat for 1 hour; finally, use 9g / L glucose oxidase to catalyze the desizing residue treated with glucoamylase, adjust the pH of the residue to 10, and place the fabric in the treatment residue with a bath ratio of 1:50. Bleaching, the bleaching temperature is 90°C, and the bleaching time is 1h. Take out the water...

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
Login to View More

PUM

PropertyMeasurementUnit
whitenessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for performing bio-enzyme bleaching on cotton and blended fabrics thereof by a multienzyme coupling system. According to the method, desizing raffinate of the cotton and the blended fabrics thereof is utilized, the fabrics are desized by amylase under the assistance of glucoamylase of different mass fractions and different vigor in a steeping or padding stacking (steaming) method, and the raffinate is catalyzed to the maximum degree, so that the mass concentration of glucose in the raffinate is improved; and the cotton and the blended fabrics thereof are bleached by using glucose oxidase of different mass fractions and different vigor under the action of catalyzing the glucose by the glucose oxidase to generate hydrogen peroxide. By the method, the weight loss ratio of the fabrics is 8 to 9 percent, the whiteness is 80, the arrangement technology has small influence on the physical and mechanical properties of the fabrics, and chemical reagents of a hydrogen peroxide stabilizing agent and the like are not used in the integral process, so that the method is small in pollution and low in cost.

Description

technical field [0001] The invention relates to a biological bleaching method for cotton and its blended fabrics, in particular to a method that does not use any chemical reagents such as chlorine-containing bleaching agents and hydrogen peroxide stabilizers, but uses multi-enzyme coupling to increase the desizing residue A method for improving the bleaching effect of biological enzymes by increasing the amount of glucose produced in the process. Background technique [0002] The bleaching process of cotton and its blended fabrics mainly adopts hydrogen peroxide bleaching, sodium hypochlorite bleaching and sodium chlorite bleaching. The process and equipment of sodium hypochlorite bleaching are relatively simple, and the cost of bleaching is low, but the bleaching wastewater contains available chlorine, which will pollute the environment and limit its application. Sodium chlorite bleaching has excellent whiteness and almost no damage to cellulose under appropriate condition...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D06L3/11D06L1/14D06L1/16D06M16/00D06M101/06D06L4/40
Inventor 李凤艳白刚
Owner TIANJIN POLYTECHNIC UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com