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Green lyocell fabric prepared by dyeing in vegetable dye rosemary and preparation method of green lyocell fabric

A plant dye, rosemary technology, applied in the field of green lyocell fabric and its preparation, to achieve simplified dyeing process, high color fastness to soaping and dry rubbing, and reduce environmental pollution

Pending Publication Date: 2021-03-12
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Literature research and market research found that lyocell fabrics dyed with natural dyes are rarely reported and need to be further developed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Green lyocell fabric prepared by dyeing in vegetable dye rosemary and preparation method of green lyocell fabric
  • Green lyocell fabric prepared by dyeing in vegetable dye rosemary and preparation method of green lyocell fabric
  • Green lyocell fabric prepared by dyeing in vegetable dye rosemary and preparation method of green lyocell fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation method of the green Lyocell fabric that dyeing of plant dye rosemary makes, described preparation method comprises the steps:

[0040] (1) Preparation of green plant dye stock solution and toner precipitate: take 50g washed leaves of rosemary, mash it and dissolve it in a mixed solution of ethanol-water containing 35% ethanol, the ratio of solid to liquid is 1:15; heat at 55°C for 7 hours, after heating, cool the extract and filter; heat the filtrate at 97°C for 4 hours, remove the ethanol solvent, and filter to prepare green plant dye stock solutions and green toner precipitates, set aside.

[0041] (2) Chemical modification: In 40mL aqueous solution, add 15mL green plant dye stock solution prepared in step (1), 1g green toner precipitate, 4mL 5wt% formaldehyde aqueous solution and 0.2g 1-amino-2-sulfate B Base sulfone ethane, use 30wt% NaOH lye to adjust the pH of the reaction solution to 10.7, stir continuously, the reaction time is 50 minutes, and t...

Embodiment 2

[0049] The preparation method of the green Lyocell fabric that dyeing of plant dye rosemary makes, described preparation method comprises the steps:

[0050] (1) Preparation of green plant dye stock solution and toner precipitate: take 50g washed leaves of rosemary, mash it and dissolve it in a mixed solution of ethanol-water containing 30% ethanol, the ratio of solid to liquid is 1:10; heat at 55°C for 7 hours, after heating, cool the extract and filter; heat the filtrate at 97°C for 4 hours, remove the ethanol solvent, and filter to prepare green plant dye stock solutions and green toner precipitates, set aside.

[0051] (2) Chemical modification: In 30mL aqueous solution, add 10mL green plant dye stock solution prepared in step (1), 1g green toner precipitate, 3mL 5wt% formaldehyde aqueous solution and 0.1g 1-amino-2-sulfate B Base sulfone ethane, use 30wt% NaOH lye to adjust the pH of the reaction solution to 10.8, stir continuously, the reaction time is 50 minutes, and t...

Embodiment 3

[0059] The preparation method of the green Lyocell fabric that dyeing of plant dye rosemary makes, described preparation method comprises the steps:

[0060] (1) Preparation of green plant dye stock solution and toner precipitate: take 50g washed leaves of rosemary, mash it and dissolve it in a mixed solution of ethanol-water containing 40% ethanol, the ratio of solid to liquid is 1:20; heat at 55°C for 7 hours, after heating, cool the extract and filter; heat the filtrate at 97°C for 4 hours, remove the ethanol solvent, and filter to prepare green plant dye stock solutions and green toner precipitates, set aside.

[0061] (2) Chemical modification: In 50mL aqueous solution, add 20mL green plant dye stock solution prepared in step (1), 1g green toner precipitate, 5mL 5wt% formaldehyde aqueous solution and 0.3g 1-amino-2-sulfate B Base sulfone ethane, use 30wt% NaOH lye to adjust the pH of the reaction solution to 10.5, stir continuously, the reaction time is 50 minutes, and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a green lyocell fabric prepared by dyeing in a vegetable dye rosemary and a preparation method of the green lyocell fabric. The preparation method comprises the following steps of extracting a green plant dye stock solution and a green toner precipitate from rosemary leaves through distillation of a mixed solution of ethanol and water, and then grafting 1-amino-2-sulfate ethyl sulfone ethane to extract so as to prepare modified green plant dye powder; and finally, dyeing a lyocell fabric in the modified green plant dye to obtain the green lyocell fabric. According to the invention, green pigment in the rosemary leaves with low reaction activity is changed into natural dye with high reaction activity, and in addition, other dye auxiliaries such as mordants and accelerants do not need to be added in the dyeing process, so that the dyeing process is simplified, the cost is saved, and meanwhile environmental pollution caused by dyeing is reduced; and the dyed greenlyocell fabric has a relatively high K / S value, and the soaping-resistant color fastness and the dry rubbing-resistant color fastness of the dyed green lyocell fabric are relatively high.

Description

technical field [0001] The invention belongs to the technical field of fabric preparation, in particular to green lyocell fabric dyed with plant dye rosemary and a preparation method thereof. Background technique [0002] Natural dyes usually refer to dyes that have not been artificially synthesized, have little or no chemical processing, and are generally dyes obtained from animal, plant or mineral resources. Since the synthesis of aniline violet in 1856, synthetic dyes have quickly occupied the market and replaced natural dyes because of their rich colors, high dyeing efficiency, complete color spectrum, and low price. However, there are more and more problems in the production and use of synthetic dyes, such as water pollution, soil pollution, poor air quality, and the production of disease-causing and carcinogenic substances, which have caused people to worry. Natural dyes produced from nature are not only environmentally friendly, non-toxic, and biodegradable, but also...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06P1/34D06P1/38D06P3/60D06P3/66D06P5/10C09B57/00C09B61/00C07C315/04C07C317/28
CPCD06P1/34D06P1/38D06P3/60D06P3/66D06P5/10C09B61/00C09B57/00C07C315/00C07C319/14C07C315/02C07C315/04C07C317/04C07C323/25C07C317/28Y02P70/62
Inventor 周凡雨彭雄义邓健董雄伟李强蔡亚军刘仰硕蔡映杰
Owner WUHAN TEXTILE UNIV
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