Method for enzymatic treatment of textiles such as wool

a technology of enzymology and textiles, applied in the field of enzymology in the treatment of textile goods, can solve the problems of affecting the quality of textile products,

Inactive Publication Date: 2003-08-21
NOTTINGHAM TRENT UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0025] A third aspect of the invention provides a method of treating fibrous textile goods to improve dimensional stability and / or improve yarn strength comprising treating the fibrous textile goods with a calcium-dependent transglutaminase. Such a treatment also may improve tensile and burst strength, shrinkage resistance, handle, reduces pilling, improves softness, improves dye uptake and washfastness, especially when used together with a protease.
[0038] Transglutaminase or its optimised derivatives can be used to improve, for example, fabric handle, pilling performance, wrinkle resistance, the setting process, improve durable press finishing.

Problems solved by technology

The enzymatic processes that are currently being used, however, are difficult to control and can lead to results that are not sufficiently predictable and reproducible and cause significant damage to the fibre cuticle with consequent strength loss.
The major problems associated with wool goods are its tendency to shrink and its handle (prickliness).
These methods achieve a significant level of shrink-resistance to wool textiles, but they are difficult to control, and may affect adversely the handle of wool goods, as well as generate damaging substances that may be released into the environment.
The scalar structure of the wool fibre is partly responsible for the tendency of wool goods to dimensional instability.
Ideally, a commercial process would remove the surface scales to a limited extent, reducing the fibre coefficient of friction without significantly reducing wool fibre strength.
The use of proteases alone is not yet widely used industrially, the main reasons being the significant losses of weight and strength that result and also the relatively low degree of reproducibility.
Many methods based on the degradation of the structure of scales are destructive, causing molecular degradation of the proteins, which is ultimately responsible for the macroscopic reduction in weight and strength of the processed wool or animal hair textiles.
Protease treatments may however, if not closely controlled, cause undesirable levels of weight and strength loss on the wool textiles.
Because of the protruding scales in the wool fibre felting shrinkage is a major problem, mainly in knitted garments.

Method used

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  • Method for enzymatic treatment of textiles such as wool
  • Method for enzymatic treatment of textiles such as wool
  • Method for enzymatic treatment of textiles such as wool

Examples

Experimental program
Comparison scheme
Effect test

example 2

Transglutaminase Crosslinking of Wool--Optimisation of Delivery and Concentration of Enzyme Used

[0084] Samples of 100% wool yarn previously treated with sodium sulphite (as described in Example 1) were treated with Savinase 16L in exactly the same manner as described above. All samples were treated with 5.0, 20.0 and 100.0 .mu.g of guinea pig liver transglutaminase per ml of liquor, and incubated for 6 hours at 37.degree. C. All other treatment parameters were the same as in Example 1. To a second set of samples pretreated exactly in the same manner 1 / 3of the total transglutaminase was added to the treatment bath every two hours (all other treatment parameters were the same). The samples were washed and dried as described in Example 1.

[0085] There was a significant improvement in the strength of all transglutaminase treated yarns compared to the buffer treated controls. These improvements were significantly greater for yarn pretreated with Savinase. In particular, the treatment with...

example 3

Effect of Different Pretreatments on the Transglutaminase Crosslinking of Wool

[0086] Pretreatment with sodium sulphite and sodium carbonate

[0087] In this example two batches of yarn samples were first treated with a) 0.5 g / L of sodium carbonate and 1 g / l of a non-ionic detergent and b) 5.0 g / l of sodium sulphite and 1 g / L of a non-ionic detergent both at a liquor to fibre ratio of 250 ml / g for 30 minutes at 60.degree. C. Samples from a) and b) were then submitted to a Savinase treatment as described in Example 1. The proteolytic reaction was stopped by washing the samples with a non-ionic detergent at pH 5 and then in hot water at 80.degree. C. for 15 minutes. Finally, the samples were rinsed before submitted to further treatment. As a control to the protease treatment, yarn samples from a) and b) were also treated with buffer only.

[0088] The four resulting sets of yarn samples were then treated with 1.0 .mu.g of transglutaminase per ml of liquor, and incubated for a period of time ...

example 4

Transglutaminase Treatments Prior to Protease Treatment

[0095] This experiment was carded using the same procedure as described in Example 1, except that in one batch of samples the protease treatment was carried out prior to the transglutaminase treatment and on the second batch the protease treatment was carried out after the transglutaminase treatment. In both yarn sample batches the concentration of Savinase 16 L were carried out as described in Example 1. All samples were treated with 1.0 .mu.g transglutaminase was per ml of liquor, and incubated for 18 hours at 37.degree. C. All other treatment parameters were the same as described in Example 1. The samples were washed and dried as described in Example 1.

[0096] The results (see FIG. 4) indicate that the transglutaminase treatment prior to the Savinase treatment not only reduced the loss of strength caused by the subsequent protease treatment (comparing to the Savinase / protease treatment) but also increased the strength of the y...

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Abstract

The application provides a method of treating fibrous textile goods comprising treating the fibrous textile goods with an enzyme. This enzyme can be used to covalently link one or more active functional compounds to the fibres and / or to trap one or more acitve functional compound within an inter-fibre matrix and / or within an intra-fibre matrix formed by the action of the enzyme. Preferably, the enzyme is a traglutaminase, especially a calcium-dependent transglutaminase. The enzyme may be used to add primary-amine containing active agents to the textile goods and also for the addition of proteins or peptides that have functional groups linked to them.

Description

[0001] The present invention relates to a method of treating fibrous textile goods, such as wool, wool fibres or animal hair with an enzyme, such as a transglutaminase, preferably either including or in the absence of a protease enzyme. This treatment can be used to trap one or more active functional compounds within, by linking either covalently or non-covently such compounds onto, the fibrous textile goods.BACKGROUND TO THE INVENTION[0002] The use of enzymes in the treatment of textile goods has gained widespread acceptance and the applications of such technology are many and diverse, including industrial processes and household laundering. Thus, enzymes find industrial applicability in the desizing of fabric, in enzymatic stone-washing of denim to create an aged look, and in numerous other treatments to impart enhanced fabric properties, such as a clean fabric surface, free of microhairs and fibres, or improved pilling properties or fabric hand. In domestic laundry products, enzy...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D06M16/00
CPCD06M16/003D06M2101/12D06M2200/50D06M2200/45D06M2200/20
Inventor GRIFFIN, MARTINCORTEZ, JOAO MARQUEZBONNES, PHILIP
Owner NOTTINGHAM TRENT UNIVERSITY
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