Dyeing method of cellulose fiber material

A technology of cellulose fiber and cellulase, which is applied in the textile field, can solve the problems of light color, low dye utilization rate, and the use of mordants, etc., to improve the color depth of dyeing, good biocompatibility, and improve selectivity Effect

Pending Publication Date: 2022-08-05
QINGDAO UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gardenia blue has been reported on the dyeing process of cellulose fabrics by pre-mordant-dyeing-post-mordant method, but there are still defects such as the use of mordant, light color and low dye utilization rate (Song Huijun, Mei Hongwen, Yin Xuchu, Zhu Chaoyu, Chao Yiyuan, Li Xinyang.Gardenia Blue Pigment Dyeing Process of Cotton Knitted Fabrics[J].Knitting Industry,2019,(04):40-43.)

Method used

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  • Dyeing method of cellulose fiber material
  • Dyeing method of cellulose fiber material
  • Dyeing method of cellulose fiber material

Examples

Experimental program
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Effect test

Embodiment 1

[0052] A method for dyeing cotton fabric on gardenia blue pigment, comprising the steps:

[0053] (1) Preparation of gardenia blue pigment:

[0054] 10g of cellulase (enzyme activity is 500U / g) was added to 50g of gardeniside, enzymatically hydrolyzed at 40°C for 48h, and concentrated under reduced pressure to a solid content of 20% to obtain gardenia aglycone; then phosphate buffered saline was used The gardenia aglycone was prepared into 150 g of a gardenia aglycone solution with a concentration of 5%, and then 5 g of glycine was reacted at 75° C. for 5 hours, separated and purified to obtain a gardenia blue pigment.

[0055] (2) Pretreatment of cotton fabrics:

[0056] Mix the polydiene dimethyl ammonium chloride, aminopropyltrimethoxysilane modifier, sodium hydroxide and water to obtain a modifier solution; then immerse the cotton fabric in the modifier solution, at 80°C Modified for 30min, taken out to obtain pretreated cotton fabric; wherein, the mass ratio of polydien...

Embodiment 2

[0065] A method for dyeing cotton fabric on gardenia blue pigment, comprising the steps:

[0066] (1) Preparation of gardenia blue pigment:

[0067] 10g of cellulase (enzymatic activity of 700U / g) was added to 50g of gardeniside, enzymatically hydrolyzed at 40°C for 48h, and concentrated under reduced pressure to a solid content of 20% to obtain gardenia aglycone; then phosphate buffered saline was used The gardenia aglycone was prepared into 200 g of gardenia aglycone solution with a concentration of 5%, and then 8 g of L-threonine was reacted at 75 ° C for 5 hours, separated and purified to obtain gardenia blue pigment;

[0068] (2) Pretreatment of cotton fabrics:

[0069] Mix (3-chloro-2-hydroxypropyl)trimethylammonium chloride modifier, aminopropyltrimethoxysilane modifier, sodium hydroxide and water to obtain a modifier solution; Immerse in modifier solution, modify at 80°C for 30min, and take out to obtain pretreated cotton fabric; wherein, (3-chloro-2-hydroxypropyl)tr...

Embodiment 3

[0078] A method for dyeing lyocell fabric on gardenia blue pigment, comprising the steps of:

[0079] (1) Preparation of gardenia blue pigment:

[0080] 10g of cellulase (enzymatic activity of 400U / g) was added to 50g of geniposide, enzymatically hydrolyzed at 40°C for 48h, and concentrated under reduced pressure to a solid content of 20% to obtain geniposide; then phosphate buffered saline was used The gardenia aglycone was prepared into 300 g of gardenia aglycone solution with a concentration of 5%, and then 12 g of L-threonine was reacted at 75°C for 5 hours, separated and purified to obtain gardenia blue pigment;

[0081] (2) Pretreatment of lyocell fabric:

[0082] Mix trimethyl[3-(triethoxysilyl)propyl]ammonium chloride, 3-aminopropyltriethoxysilane modifier, sodium hydroxide and water to obtain a modifier solution; then The lyocell fabric was dipped in the modifier solution, modified at 80°C for 30 min, and taken out to obtain the pretreated lyocell fabric; wherein, t...

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Abstract

The invention discloses a dyeing method of a cellulosic fiber material, and belongs to the field of spinning. The preparation method comprises the following steps: preparing various gardenia blue pigments from various amino acids; then modifying the cellulose fiber material by adopting a modifier containing a quaternary amine group and a modifier containing an amino group so as to improve the dyeing depth of the gardenia blue pigment on the cellulose fiber material and the dye utilization rate; and finally, the dyed cellulose fiber material is treated by using an amino organic silicone oil emulsion, so that the color fastness of the gardenia blue pigment is improved, and the color spectrum of natural cold-tone blue dyeing is enriched.

Description

technical field [0001] The invention relates to a dyeing method of cellulose fiber material, belonging to the field of textiles. Background technique [0002] With the increasing demand for comfort, safety and health performance of textiles, chemicals using natural resources as the main raw material have received attention. Natural pigments are valued and developed because of their safety, non-toxicity, greenness and good biocompatibility. [0003] There are still some unavoidable problems in the actual industrial application of natural dyes, such as: some natural dyes have poor affinity for fibers and low washing fastness. In order to improve the affinity and color fastness of natural pigments and fibers, mordant is usually added when natural pigments are dyed, and the dyeing rate and color fastness of natural dyes are improved by the complexation of metal ions between fibers and pigments. Heavy metals (metal salts such as copper, iron, aluminum, zinc, etc.) in mordants w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P1/655D06P1/66D06P3/60D06P5/08
CPCD06P3/60D06P1/34D06P1/66D06P1/655D06P5/08D06P1/445
Inventor 许长海张心乐蒋阳杜金梅苗大刚张红霞
Owner QINGDAO UNIV
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