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Method for scouring and bleaching cotton fabric with composite enzyme preparation in one bath

a technology of composite enzymes and cotton fabric, which is applied in the field of scouring and bleaching cotton fabric with composite enzyme preparation in one bath, can solve the problems of high alkali, high temperature, and general scouring and bleaching of cotton fabric, and achieve the effect of shortening the process flow and solving the problem of high power consumption and high pollution

Inactive Publication Date: 2010-08-05
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method for scouring and bleaching cotton fabric using a composite enzyme preparation in one bath, to solve the problems of high power consumption and pollution in the current chemical pre-treatment method. The scouring enzyme preparation is compounded from cutinase, alkaline pectase, alkaline xylanase, alkaline cellulose, and carbohydrate oxidase. The method has mild processing conditions, no damage on the fabric, low power consumption, and is environment friendly. The composite enzyme preparation can effectively remove impurities on the fabric surface and improve the whiteness of the fabric. The treated fabric can meet the processing requirements of subsequent process. The invention provides an ideal method to replace the conventional chemical treatment method.

Problems solved by technology

The conventional process for scouring and bleaching cotton fabric generally has the disadvantages of high temperature, high alkali, high pollution, and being not environmental friendly.

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

Conventional Scouring and Bleaching Process (Comparative Example)

[0012]Fabric: Cotton poplin (15 tex×15 tex, 524 threads / 10 cm×283 threads / 10 cm)

[0013]Conventional scouring process: alkaline scouring: NaOH 15 g / L, penetrant JFC 5 g / L, NaHSO3 1 g / L, NaPO3 1 g / L, pH 13, temperature 95° C., bath ratio 1:20, processing time 60 min.

[0014]Conventional bleaching process: 30% H2O2 5 g / L, oxidation bleaching stabilizer RB-3 1 g / L, pH 10.5, bath ratio 1:20, temperature 90° C., processing time 60 min. The results are as shown in Table 1.

embodiment 2

Enzymatic Scouring and Conventional Bleaching Process (Comparative Example)

[0015]Fabric: Cotton poplin (15 tex×15 tex, 524 threads / 10 cm×283 threads / 10 cm)

[0016]Enzymatic scouring: scouring enzyme preparation (cutinase, alkaline pectase, alkaline xylanase, alkaline cellulase) 1.5 g / L; penetrant JFC 5 g / L, and Triton X-100 1 g / L; bath ratio 1:20, pH 10, temperature 60° C., processing time 60 min.

[0017]Conventional bleaching: 30% H2O2 5 g / L, oxidation bleaching stabilizer RB-3 3 g / L, pH 11, bath ratio 1:20, temperature 90° C., processing time 60 min.

[0018]The enzymatic scouring of cotton fabric has equivalent treatment effect to that of the alkaline scouring, but has relatively low damage on the fabric. The results are as shown in Table 1.

embodiment 3

Enzymatic Scouring of Cotton Fabric and Bleaching with H2O2 Generated by Glucose Oxidase (Not in the Same Bath)

[0019]Fabric: Cotton poplin (15 tex×15 tex, 524 threads / 10 cm / 283 threads / 10 cm)

[0020]Enzymatic scouring: scouring enzyme preparation (cutinase, alkaline pectase, alkaline xylanase, alkaline cellulase) 1.5 g / L; penetrant JFC 5 g / L, and Triton X-100 1 g / L; bath ratio 1:20, pH 10, temperature 60° C., processing time 60 min.

[0021]Bleaching process with H2O2 generated by carbohydrate oxidase added in the bleaching bath: the bleaching bath composition includes: carbohydrate oxidase 1.0 g / L, glucose 3 g / L, penetrant JFC 4 g / L, oxidation bleaching stabilizer RB-3 3 g / L, bath ratio 1:20, pH 8, temperature 55° C., processing time 60 min, followed by raising the temperature to 90° C. and adjusting to pH 10 for bleaching for 60 min.

[0022]H2O2 is generated by carbohydrate oxidase with glucose as substrate. The results are as shown in Table 1.

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Abstract

A method for scouring and bleaching cotton fabric with composite enzyme preparation in one bath is provided. The method relates to the application of composite alkaline enzyme preparation in scouring and bleaching processes of cotton fabric. The enzyme preparation for scouring and bleaching cotton fabric is compounded from cutinase, alkaline pectase, alkaline xylanase, alkaline cellulose, and carbohydrate oxidase. The method includes: scouring the cotton fabric by adding the composite enzyme preparation, glucose, oxidation bleaching stabilizer RB-3, penetrant JFC, and Triton X-100 in a treating bath at 55-70° C. and pH 8-10, and then bleaching the cotton fabric for 30 min by directly adding tetraacetyl ethylenediamine (TAED) in the scouring bath to activate hydrogen peroxide. After being treated by the method of the present invention, the cotton fabric has high impurity removal ratio, favorable wettability, and high whiteness. The present invention has the advantages of low power consumption, short process flow, and being environment friendly, and may be used to replace conventional chemical treatment process under the condition of concentrated alkali and high temperature.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a method for scouring and bleaching cotton fabric with composite enzyme preparation in one bath, and belongs to the field of the application of alkaline enzyme preparations in scouring and bleaching process of cotton fabric.[0003]2. Related Art[0004]The conventional process for scouring and bleaching cotton fabric generally has the disadvantages of high temperature, high alkali, high pollution, and being not environmental friendly. The use of enzyme in scouring and bleaching cotton fabric in one bath has the advantages of mild processing conditions, low fabric damage, low power consumption, being environment friendly, and short process flow. The use of enzyme in scouring and bleaching cotton fabric in one bath, by adopting a preferable composite enzyme preparation and optimizing the process conditions, is a topic of practical significance that keeps close contact with actual production a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D06L3/14D06L4/40D06L4/70D06L4/75
CPCD06L3/11D06M2101/06D06M16/003D06L3/16D06L4/40D06L4/75
Inventor CHEN, JIANDU, GUOCHENGYAN, HEJINGLI, JIANGHUA
Owner JIANGNAN UNIV
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