A kind of antibacterial and anti-felt shrinkage finishing method of wool fabric

Abstract

The invention discloses an antibacterial and anti-felting wool fabric finishing method, and belongs to the technical field of spinning. The method includes the steps of firstly, adding hydrogen peroxide and sodium hydroxide to preprocess wool fabric so that scale cells and cortex cells of surfaces of wool fibers can be broken; secondly, conducting enzyme treatment, wherein keratinase and alkaline protease are added for concerted reaction enzymolysis, and after keratin enzymolysis is conducted on the outer layers of scales through keratinase, enzymolysis is conducted on cystine of keratin protein of parts such as inner stratum corneum and cortical layers of wool through alkaline protease; thirdly, conducting chemical finishing, wherein twice soaking and twice rolling are conducted on the wool fabric through a glycerol citric acid ester solution. By means of the method, the effect of increasing wool anti-felting and antibacterial capacity is remarkable, reaction time is short, subsequent processing is simple, the influences on breaking force and whiteness of the processed wool fabric are small, dyeing performance is greatly improved, the directional friction effect is greatly reduced, high economic benefits are achieved, and industrial popularization is facilitated.

Description

Technical field: [0001] The invention relates to an antibacterial and anti-felting finishing method for wool fabrics, belonging to the field of textile biotechnology. Background technique: [0002] Wool fiber is a kind of natural protein fiber favored by consumers at home and abroad. It has soft luster, high elasticity, good hygroscopicity, warmth retention, anti-wrinkle and anti-fouling properties. It is not only suitable for making sweaters and coats, but also suitable for making However, due to the special structure of wool itself, that is, the surface of the fiber has a scale layer, which can produce a directional friction effect, coupled with the excellent elasticity and curl of wool, the wool fabric will be damaged by external forces during the washing process. Felt shrinkage affects the style and dimensional stability of the fabric. The disulfide bond, salt bond and van der Waals force between wool fiber molecules make the wool fiber more resistant to the hydrolysis ...

AI Technical Summary

Problems solved by technology

Chlorine compounds produce chlorine gas during the treatment process, chlorine gas reacts with water to produce hypochlorous acid, hypochlorous acid releases active chlorine when the pH value is 1.5-5.5, and the wool scale layer promotes swelling and partial dissolution of microcysts, chlorination The treatment method is low in cost, mature in technology, and has good anti-felt effect and is widely used. However, adsorbable and carcinogenic organic halides will be produced during the processing, and their biodegradability is poor, which is harmful to the environment. Therefore, this method has not been used. Adapt to the Development Requirements of Ecological Textiles

[0007] (3) Resin addition method: The resin method is to apply the resin evenly on the surface of the wool fiber to form a protective film and cover the wool scales, thereby reducing or eliminating the sliding friction between the fibers to achieve the effect of preventing felting. The resin method will not Damage wool fiber, the method is simple, the anti-shrinkage effect is good, and it can also improve the wear resistance and pilling resistance of the fabric, but the fabric treated by the resin method will feel hard, which will affect the subsequent dyeing and wearing performance of the fabric. It will also peel off in subsequent processing and washing, and cannot maintain long-term shrink resistance

After the two-bath treatment with keratinase and protease, the dyeing performance of the fabric is greatly improved, and the directional friction effect is greatly reduced, but the alkali solubility exceeds 10%, and its damage to the fabric is relatively large, which is the closest to the prior art of the present invention. The degradation of scales by this technology is not uniform enough, especially the finishing of protease, which is not as good as the effect of traditional chlorination treatment. At the same time, the invention uses less enzyme addition to prolong the enzymatic hydrolysis time to obtain a more satisfactory enzymatic hydrolysis effect. The compounding of various enzymes reduces the reaction time, but the overall time consumption is still relatively large, which is not conducive to industrialization

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