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A kind of method that biological method prepares easily decontamination cotton product

A cotton product, easy decontamination technology, applied in biochemical equipment and methods, enzyme/microbial biochemical treatment, plant fiber, etc., can solve problems such as difficulty in recycling, variable inactivation, poor stability of lipase, etc., to achieve Effects of mild conditions, expanded application fields, and strong practicability

Active Publication Date: 2019-03-01
JIANGSU MEILUO HOME TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual application process, lipase has poor stability and is easily denatured and inactivated under the influence of external conditions such as temperature, pH and inorganic ions; after the reaction between the enzyme and the substrate, even if the enzyme still has high activity, it is difficult to recycle and re-use

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

[0015] Embodiment 1 Laccase is to the aldylation modification of cotton fabric

[0016] Weigh a certain amount of cotton fabric after pretreatment, and put it into 40mL glacial acetic acid-sodium acetate buffer solution (pH4.5) together with 0.8-1.2mg / mL laccase and 1-1.4mg / mL TEMPO at the same time. Under reaction 8-15h, after taking out, shake and wash 10min with the hydrochloric acid of 0.01mol / L, then dry after washing to obtain the aldylation oxidized cotton fabric (laccase from any source in the present invention can realize the same effect, different sources The laccase has catalytic effect on cotton fiber). Weigh about 0.18g of absolute dry cotton fiber and shred it, evenly disperse it in 60mL of deionized water, add excess (0.2mL) of 2% hydroxylamine hydrochloride, and fully react. After the reaction is over, insert a digital conductivity meter electrode into the solution, titrate with 0.01M NaOH standard solution, and calculate the aldehyde group content in the cott...

Embodiment 2

[0017] Example 2 Enzymatic immobilization of lipase to prepare stain-resistant cotton fabrics

[0018] Weigh the aldylated cotton fabric and soak it in the glacial acetic acid-sodium acetate buffer solution (pH 4.0-5.0) containing 2-5U of aldolase and 100U-200U / g of lipase concentration, and the reaction time is 10-12h. , the bath ratio is 1:20, the reaction temperature is 25°C, and the immobilized lipase activity is 35-50U / g cotton fabric. Add the same amount of olive oil and edible chili oil to the cotton fabric with immobilized lipase and the cotton fabric without immobilized lipase respectively, dry it in the air, and treat it in water at 50°C for 15min, the cotton fabric with immobilized lipase The oil stains were completely washed away, but the oil stains on the cotton fabrics without lipase still existed. Therefore, the cotton fabrics immobilized with lipase had a good decontamination effect on oil stains.

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PUM

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Abstract

The invention relates to a method for preparing a soil-release cotton product by a biological process, belonging to the technical field of textile biology. The method is aimed at preparing an aldehyde cotton fabric first by means of an oxidizing reaction of a laccase to the cotton fabric, and then immobilizing a lipase on the cotton fabric by means of an aldolase catalyzed aldol condensation reaction between an aldehyde group on the cotton fabric and a hydroxy group of the lipase, thereby providing the cotton fabric with a soil-release functional property by means of the hydrolytic action of the lipase. The method for preparing a soil-release cotton product by a biological process is moderate in operation condition with no chemical reagent residue problem and environmental pollution problem caused by traditional modification by a chemical process, and the prepared soil-release product may be applied to more extensive application fields.

Description

technical field [0001] The invention relates to a preparation method of biologically easy-to-decontaminate cotton products, which is a method of modifying cotton fabrics by aldehydes with laccase, and then using aldolase to immobilize lipase on cotton fabrics, based on lipase hydrolysis Function, the method for endowing textiles with easy decontamination properties belongs to the field of textile biotechnology. Background technique [0002] At present, the decontamination finishing of textile materials mainly focuses on changing the surface properties of fabrics with decontamination finishing agents, so as to achieve the purpose that oil is not easy to wet on the fabric, it is not easy to stain and the staining substances are easier to remove. Among them, the best effect is the fluorine-containing finishing agent. Such as Scotchguard FC-218 launched by 3M Company, and OLEOPHOBOL, an easy decontamination finishing agent of Capstone launched by huntsman Company. Around 2001,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M16/00C12N11/12D06M101/06
CPCC12N9/20C12N11/12C12Y301/01003D06M16/003D06M2101/06
Inventor 崔莉余圆圆王平范雪荣王强纪敏
Owner JIANGSU MEILUO HOME TEXTILE