One-step dyeing and functional finishing method of textiles

A textile and functional technology, applied in textiles and papermaking, dyeing, fiber processing, etc., can solve the problems of caffeic acid enzymatic polymerization products, large molecular weight of pigments, negative effects on color fastness, etc. Short, bright colors and UV protection, dye-intensive effect

Inactive Publication Date: 2015-03-11
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this dyeing method is that the activity of oxidoreductase is greatly affected by the dyeing temperature. If the temperature is too high, the enzyme activity will decrease, resulting in a greatly reduced dyeing effect, and the dyed fabric is lighter in color. Therefore, this dyeing is generally carried out at room temperature. Carried out at a temperature of 50°C; due to the low dyeing temperature and the large molecular weight of some pigments formed in situ, it seriously affects the diffusion of pigments in textile fibers, which will have a negative impact on color fastness
[0008] In the existing literature, there is no report on the application of caffeic acid enzyme polymer products in one-step processing of textiles in one-bath dyeing and functional finishing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The textiles selected in this embodiment are woolen fabrics.

[0029] Step 1: Preparation of Caffeic Acidase Polymer Product

[0030] In 1.8 g / L caffeic acid aqueous solution, add phosphate buffer to adjust the pH value to 6.5, add 16 U / ml tyrosinase, treat at 25°C for 4 hours, then raise the temperature to 70°C for treatment After 10 minutes, the enzyme was inactivated, and a colored caffeic acid polymer product solution was obtained.

[0031] Step 2: One-step dyeing and finishing of wool fabric

[0032] In the caffeic acid enzyme polymer product solution obtained in step 1, add a Beritan / Robison buffer composed of phosphoric acid, acetic acid, boric acid and sodium hydroxide to adjust the pH to 4. The dye bath ratio is 25:1. Add woolen fabric, heat up to 95°C at a heating rate of 2°C / min, and continue dyeing for 1 hour. After dyeing, wash in warm water at 40°C for 10 minutes, fully wash in cold water, and dry at 60°C.

[0033] After testing, the lightness index L...

Embodiment 2

[0035] The selected textile in this embodiment is silk crepe chine.

[0036] The preparation method of the caffeic acid enzyme polymer product is the same as step 1 in Example 1.

[0037] In the obtained caffeic acid polymer product solution, add a Beritan / Robison buffer composed of phosphoric acid, acetic acid, boric acid and sodium hydroxide to adjust the pH to 3. The dye bath ratio is 25:1. Add silk crepe chine, heat up to 95°C at a heating rate of 2°C / min, and continue dyeing for 1 hour. After dyeing, wash in warm water at 40°C for 10 minutes, fully wash in cold water, and dry at 60°C.

[0038] After testing, the lightness index L* of the dyed and finished silk crepe chine provided in this example is 58.26, the red-green index a* is 4.35, the yellow-blue index b* is 41.42, the apparent color depth K / S value is 7.46, and the color Brilliant yellow with a slight green tinge. The UV protection factor UPF of dyed and finished silk crepe chine is 34.8, the anti-oxidation ra...

Embodiment 3

[0040] The textiles selected in this embodiment are nylon plain weave fabrics.

[0041] The preparation method of the caffeic acid enzyme polymer product is the same as step 1 in Example 1.

[0042] In the obtained caffeic acid polymer product solution, add a Beritan / Robison buffer composed of phosphoric acid, acetic acid, boric acid and sodium hydroxide to adjust the pH to 5. The dye bath ratio is 25:1. Add nylon fabric, heat up to 95°C at a heating rate of 2°C / min, and continue dyeing for 1 hour. After dyeing, wash in warm water at 40°C for 10 minutes, fully wash in cold water, and dry at 60°C.

[0043] After testing, the lightness index L* of the dyed and finished nylon fabric provided by this embodiment is 60.03, the red-green index a* is 8.76, the yellow-blue index b* is 48.69, the apparent color depth K / S value is 7.52, and the color is Bright yellow. The water drop contact angle of the dyed and finished nylon fabric is 82.1°, the ultraviolet protection factor UPF is...

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Abstract

The invention discloses a one-step dyeing and functional finishing method of textiles, and particularly relates to a one-step dyeing and functional finishing method of textiles by using a caffeic acid enzyme polymerization product, belonging to the field of textile dyeing and finishing. According to the invention, the caffeic acid oxidative polymerization is catalyzed by oxido-reductase to prepare a colored enzyme polymerization product solution, and the textile is put into the solution to realize one-step dyeing and functional finishing of the textiles in a weak acid condition. Compared with the traditional color synthesis method, the method for preparing functional color by catalyzing the caffeic acid oxidative polymerization with oxido-reductase provided by the invention has the advantages of low temperature, approximately neutral pH value, mild reaction conditions, low energy consumption and the like; the prepared colored enzyme polymerization product is applied to one-step one-batch dyeing and finishing of the textiles; the processing process has short flow, saves time and realizes multiple effects in one step; and the prepared textile has bright color and multiple functions such as ultraviolet protection, oxidation resistance, deodorization and the like.

Description

technical field [0001] The invention relates to a method for one-step dyeing and functional finishing of textiles by using caffeic acid enzyme polymerization products, in particular to using oxidoreductase to catalyze the oxidation polymerization of caffeic acid, and using the enzyme polymerization products for simultaneous dyeing of wool, silk and nylon textiles The invention relates to a method for functional finishing and belongs to the field of textile dyeing and finishing. Background technique [0002] The dye and dyeing industry is now facing severe development problems caused by new chemical regulations restricting the use of some toxic dyes, environmental pollution, increased labor costs, poor market competitiveness, and increased wastewater treatment costs. Develop new environmentally friendly dyes, high-fixation dyes and functional dyes, adopt new and more environmentally friendly methods to synthesize dyes, adopt energy-saving and emission-reducing dyeing and fini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/00D06M16/00
Inventor 唐人成孙莎莎
Owner SUZHOU UNIV
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