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Preparation method and application of chitosan-natural plant pigment macromolecular dye solution

A technology of natural plant pigments and natural plant dyes, applied in the field of preparation of chitosan-natural plant pigment macromolecular dyes, can solve the problem of low combination fastness between natural plant dyes and textiles, poor color fastness of dyed fabrics, and high impurity content and other problems, to achieve the effect of good color fastness, strong coloring ability and deep color

Active Publication Date: 2014-10-08
临泉县嘉鸿装饰工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved by the present invention are: the natural plant dye extract has many impurities and low pigment content; and the combination fastness of natural plant dyes and textiles is low, and the color fastness of dyed fabrics is poor

Method used

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  • Preparation method and application of chitosan-natural plant pigment macromolecular dye solution

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Experimental program
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Effect test

Embodiment 1

[0023] (1) the molecular weight 5 × 10 4 1. Chitosan with a deacetylation degree of 95% is dissolved in an acetic acid solution with a solute mass fraction of 0.5%, and a chitosan solution with a mass fraction of 5% is prepared. At this time, the chitosan is viscous. Mass fraction 5% hydrogen peroxide solution (the volume ratio of 5% hydrogen peroxide solution and chitosan solution is 0.2:1), after the dropwise addition is completed, the constant temperature reaction is carried out for 0.5h, and after the reaction is completed, it is cooled to obtain chitosan Dispersion liquid: at a height of 10 cm away from the liquid surface, with a No. 5 needle, the above-mentioned chitosan dispersion liquid is dripped into the concentration 10g / L NaOH solution drop by drop under magnetic stirring. The ball was filtered out, washed 3 times with distilled water, dried under vacuum at 50°C, and set aside;

[0024] (2) Dissolve 1 g of madder extract in 100 mL of water, then add 10 g of chitos...

Embodiment 2

[0034] (1) The molecular weight is 10×10 4 1. Chitosan with a deacetylation degree of 90% is dissolved in an acetic acid solution with a solute mass fraction of 1%, and a chitosan solution with a mass fraction of 3% is prepared. At this time, the chitosan is viscous. Mass fraction 5% hydrogen peroxide solution (the volume ratio of 5% hydrogen peroxide solution and chitosan solution is 0.4:1), after the dropwise addition is completed, the constant temperature reaction is carried out for 1.5h, and after the reaction is completed, it is cooled to obtain chitosan Dispersion liquid: at a height of 10 cm away from the liquid surface, with a No. 5 needle, the above-mentioned chitosan dispersion liquid is dripped into the concentration 20g / L NaOH solution drop by drop under magnetic stirring. The ball was filtered out, washed 5 times with distilled water, dried under vacuum at 80°C, and set aside;

[0035] (2) Dissolve 1 g of Scutellaria baicalensis extract in 100 mL of water, then a...

Embodiment 3

[0040] (1) the molecular weight 8 × 10 4 , Chitosan with a deacetylation degree of 92% is dissolved in an acetic acid solution with a solute mass fraction of 0.8%, and a chitosan solution with a mass fraction of 4% is prepared. At this time, the chitosan is viscous. Mass fraction 5% hydrogen peroxide solution (the volume ratio of 5% hydrogen peroxide solution and chitosan solution is 0.3:1), after the dropwise addition is completed, the constant temperature reaction is carried out for 1h, and after the reaction is completed, it is cooled to obtain chitosan dispersion solution; at a height of 10cm from the liquid surface, use a No. 5 needle to drip the above-mentioned chitosan dispersion into the NaOH solution with a concentration of 15g / L under magnetic stirring. After the addition, the chitosan microspheres Filtered out, washed 4 times with distilled water, dried under vacuum at 60°C, and set aside;

[0041] (2) Dissolve 1 g of turmeric extract in 100 mL of water, then add 2...

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Abstract

The invention belongs to the field of new materials, and particularly relates to a preparation method and application of a chitosan-natural plant pigment macromolecular dye solution. The preparation method comprises the following steps: firstly purifying a natural plant dye by utilizing the electrostatic attraction and the intermolecular force between the amido of chitosan and a negative ion natural plant pigment to obtain a chitosan-natural plant pigment macromolecular dye; and then preparing the chitosan-natural plant pigment macromolecular dye into a dye solution for textile coloration. Compared with the original natural plant dye, the obtained chitosan-natural plant pigment macromolecular dye has heavier molecular weight and has very high coloring capacity on natural fibers, such as cotton, hemp, silk and fur, because the chitosan has high affinity with cellulose fibers and protein fibers; a dyed fabric obtained by the chitosan-natural plant pigment macromolecular dye solution not only has deep color, but also has good color fastness.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a preparation method and application of a chitosan-natural plant pigment macromolecular dye. Background technique [0002] In recent years, with the continuous enhancement of people's awareness of environmental protection and the increasing concern for their own health, natural dyes have attracted widespread attention. Natural dyes mainly include natural plant dyes, natural animal dyes and mineral dyes. Among them, natural plant dyes are mainly extracted from plant roots, stems, leaves, and husks. They are non-toxic and harmless, and have good environmental compatibility. And some natural dyes are derived from traditional Chinese medicinal materials, which not only have the function of coloring, but also have the function of medicine and health care. In addition to pigments that play a coloring function, natural plant dye extracts also contain sugars, lignin derivatives,...

Claims

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Application Information

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IPC IPC(8): C09B67/54C09B69/10D06P1/34D06P3/60D06P3/04D06P3/14
Inventor 彭勇刚纪俊玲汪媛朱孝霖周永生
Owner 临泉县嘉鸿装饰工程有限公司
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