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Rapid low-temperature dyeing method for protein fibers by using Maillard reaction

A protein fiber, Maillard reaction technology, applied in the direction of dyeing, animal fiber, fiber processing, etc., can solve the problems of high dyeing and finishing temperature, strong wool damage, long time, etc., to achieve good UV resistance, dyeing and other problems. Short time and less fiber damage

Pending Publication Date: 2022-07-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reaction process is carried out under strong alkaline conditions, which will seriously damage the strength of wool, and the temperature of dyeing and finishing is also high and the time is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 1.8g of DHA into a conical flask, add 50ml of water to prepare a DHA solution, adjust the pH to about 8.0 with a pH meter, put in 1g of wool, press the wool with a glass rod (avoid the wool felt shrinking due to stirring) until the solution is completely soaked The wool was sealed and placed in a constant temperature water bath with a temperature set to 80°C. After 1 hour, the wool was taken out, washed in clean water, and dried. The K / S value of the wool after dyeing was measured to be 8.31.

Embodiment 2

[0032] Weigh 2.7g of DHA into a conical flask, add 50ml of water to prepare a DHA solution, adjust the pH to about 8.0 with a pH meter, put in 1g of wool, and press the wool with a glass rod (avoid the wool felt shrinking due to stirring) until the solution is completely soaked The wool was sealed and placed in a constant temperature water bath with a temperature set to 80°C. After 1 hour, the wool was taken out, washed in clean water, and dried. The K / S value of the wool after dyeing was measured to be 4.68.

Embodiment 3

[0034] Weigh 0.9g of DHA into a conical flask, add 50ml of water to prepare a DHA solution, adjust the pH to about 6.5 with a pH meter, put in 1g of silk, and press the silk with a glass rod (avoid the wool felt shrinking due to stirring) until the solution is completely infiltrated The silk was sealed and placed in a constant temperature water bath with a temperature of 70°C. After 1 hour, the silk was taken out, washed in clean water, and dried. The K / S value of the silk after dyeing was measured to be 0.64.

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Abstract

The invention relates to a method for rapidly realizing low-temperature green dyeing of protein fibers by utilizing Maillard reaction, which comprises the following steps: pretreating fibers, immersing the fibers into a solution containing 1-3wt% of dihydroxy acetone, adjusting the pH value to 4-8 and the bath ratio to 1: 30-1: 100, reacting at 60-80 DEG C for 20-120 minutes, taking out, washing with water, and drying to obtain dyed protein fibers. According to the method, rapid low-temperature dyeing of the protein fibers is achieved through the environment-friendly Maillard reaction, meanwhile, the dyed fibers are endowed with excellent anti-ultraviolet performance, and the method relates to green printing and dyeing of natural fibers and functionalization of textile materials.

Description

technical field [0001] The invention belongs to the technical field of material modification, and particularly relates to the green printing and dyeing of natural fibers and the functionalization of textile materials. Background technique [0002] Wool, silk and other natural and regenerated protein fibers are hydrophilic fibers whose amino and carboxyl groups can be separated by -NH 3 + and -COO - The ionic form, combined with anionic or cationic dyes, can also form covalent bonds with reactive dyes. For the dyeing of protein fibers such as wool and silk, chromium dyes and acid dyes with excellent color rendering and dark dyeing are usually used. However, the raw materials of chromium dyes contain harmful heavy metal ions, chromium, and the raw materials of the chromophore of acid dyes also use a large amount of harmful aromatic amines. With the deepening of the concept of green environmental protection and the requirements of low-carbon development, natural dyes have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/14D06P3/04D06P1/651D06P1/00D06M13/148D06M101/10D06M101/12
CPCD06P3/14D06P3/04D06P1/65118D06P1/00D06M13/148D06M2101/10D06M2101/12D06M2200/25
Inventor 陈长洁孙玉发张欣雨邱添王婧王新厚
Owner DONGHUA UNIV
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