Red lyocell fabric obtained through animal dye cochineal dyeing and preparation method of red lyocell fabric

Abstract

The invention relates to a red lyocell fabric dyed by animal dye cochineal and a preparation method of the red lyocell fabric. Red pigment is extracted from cochineal through a high-temperature aqueous solution, a solution containing the cochineal pigment is prepared, the solution containing the cochineal pigment, a polyphenol oxidase solution, a cellulase solution, an H2O2 solution and the like are prepared into a dyeing solution, manganese dioxide, lyocell fabric and the dyeing solution are put into a dyeing machine to be dyed, and then the dyed fabric is dried. The dyed lyocell fabric is subjected to enzyme deactivation, then washed with tap water and dried, and the red lyocell fabric is obtained. The cellulose and the red pigment are respectively activated by selecting cellulase and polyphenol oxidase, so that the graft polymerization reaction of the cellulose and the red pigment is realized. The dyeing conditions are mild, and the pollution to the environment is small; the dyed red lyocell fabric has a relatively high K / S value, and the soaping fastness and the dry rubbing fastness are relatively high in grade.

Description

technical field

[0001] The invention belongs to the technical field of fabric preparation, in particular to a red lyocell fabric prepared by dyeing with animal dye cochineal and a preparation method thereof. Background technique

[0002] At present, almost all synthetic dyes are used in textile dyeing and finishing. With the consumption of the earth's petroleum resources, the raw material problem of synthetic dyes has been exposed, and synthetic dyes are not easy to biodegrade, which easily leads to waste water pollution. With the improvement of people's living standards, more and more people pay attention to environmental protection issues and pay more attention to their own health. Natural dyes are soft in color, non-toxic, harmless, biodegradable and environmentally compatible. Compared with synthetic dyes, the main advantage of natural dyes is that the colored substances extracted from animals or plants have almost no chemical treatment and are less harmful to the human...

Examples

Embodiment 1

[0034] The preparation method of the red lyocell fabric obtained by dyeing with animal dye cochineal, the specific method comprises the following steps:

[0035] (1) Preparation of cochineal red pigment solution: select the dried cochineal body, wash with clean water to remove impurities; boil and reflux with petroleum ether for 7h, the ratio of material to liquid is 1:5 (g / mL); then boil and reflux with ethanol 7h, the ratio of material to liquid is 1:5 (g / mL), and after drying, it is used as a raw material for subsequent use; 10 g of raw material is weighed and put into a conical flask, and distilled water extractant is added, and the ratio of material to liquid is 1:6 (g / mL); Extract at 85°C for 4 hours, and filter after extraction to obtain cochineal red pigment solution for later use.

[0036](2) Preparation of enzyme solution: Preparation of polyphenol oxidase solution: Dissolve polyphenol oxidase in phosphate buffer solution with a pH of 6.5 to prepare 25 mg / mL polyphen...

Embodiment 2

[0041] The preparation method of the red lyocell fabric obtained by dyeing with animal dye cochineal, the specific method comprises the following steps:

[0042] (1) Preparation of cochineal red pigment solution: choose the dried body of cochineal worm, wash with clean water to remove impurities; boil and reflux with petroleum ether for 6h, and the ratio of material to liquid is 1:4 (g / mL); then boil and reflux with ethanol 6h, the ratio of material to liquid is 1:4 (g / mL), and after drying, it is used as a raw material for subsequent use; 10g of raw material is weighed and put into a conical flask, and distilled water extractant is added, and the ratio of material to liquid is 1:5 (g / mL); Extract at 85°C for 3 hours, and filter after extraction to obtain cochineal red pigment solution for later use.

[0043] (2) Preparation of enzyme solution: Preparation of polyphenol oxidase solution: Dissolve polyphenol oxidase in phosphate buffer solution with a pH of 6.5 to prepare 20 mg...

Embodiment 3

[0048] The preparation method of the red lyocell fabric obtained by dyeing with animal dye cochineal, the specific method comprises the following steps:

[0049] (1) Preparation of cochineal red pigment solution: choose the dried body of cochineal worm, wash with clean water to remove impurities; boil and reflux with petroleum ether for 8h, and the ratio of material to liquid is 1:6 (g / mL); then boil and reflux with ethanol 8h, the ratio of material to liquid is 1:6 (g / mL), after drying, it is used as a raw material for subsequent use; 10g of raw material is weighed and put into a conical flask, and distilled water extractant is added, and the ratio of material to liquid is 1:7 (g / mL); Extracted at 90°C for 5h, and filtered after the extraction to obtain cochineal red pigment solution for later use.

[0050] (2) Preparation of enzyme solution: Preparation of polyphenol oxidase solution: Dissolve polyphenol oxidase in phosphate buffer solution with a pH of 6.5 to prepare 30 mg / ...

technical field

[0001] The invention belongs to the technical field of fabric preparation, in particular to a red lyocell fabric prepared by dyeing with animal dye cochineal and a preparation method thereof. Background technique

[0002] At present, almost all synthetic dyes are used in textile dyeing and finishing. With the consumption of the earth's petroleum resources, the raw material problem of synthetic dyes has been exposed, and synthetic dyes are not easy to biodegrade, which easily leads to waste water pollution. With the improvement of people's living standards, more and more people pay attention to environmental protection issues and pay more attention to their own health. Natural dyes are soft in color, non-toxic, harmless, biodegradable and environmentally compatible. Compared with synthetic dyes, the main advantage of natural dyes is that the colored substances extracted from animals or plants have almost no chemical treatment and are less harmful to the human...

Examples

Embodiment 1

[0034] The preparation method of the red lyocell fabric obtained by dyeing with animal dye cochineal, the specific method comprises the following steps:

[0035] (1) Preparation of cochineal red pigment solution: select the dried cochineal body, wash with clean water to remove impurities; boil and reflux with petroleum ether for 7h, the ratio of material to liquid is 1:5 (g / mL); then boil and reflux with ethanol 7h, the ratio of material to liquid is 1:5 (g / mL), and after drying, it is used as a raw material for subsequent use; 10 g of raw material is weighed and put into a conical flask, and distilled water extractant is added, and the ratio of material to liquid is 1:6 (g / mL); Extract at 85°C for 4 hours, and filter after extraction to obtain cochineal red pigment solution for later use.

[0036](2) Preparation of enzyme solution: Preparation of polyphenol oxidase solution: Dissolve polyphenol oxidase in phosphate buffer solution with a pH of 6.5 to prepare 25 mg / mL polyphen...

Embodiment 2

[0041] The preparation method of the red lyocell fabric obtained by dyeing with animal dye cochineal, the specific method comprises the following steps:

[0042] (1) Preparation of cochineal red pigment solution: choose the dried body of cochineal worm, wash with clean water to remove impurities; boil and reflux with petroleum ether for 6h, and the ratio of material to liquid is 1:4 (g / mL); then boil and reflux with ethanol 6h, the ratio of material to liquid is 1:4 (g / mL), and after drying, it is used as a raw material for subsequent use; 10g of raw material is weighed and put into a conical flask, and distilled water extractant is added, and the ratio of material to liquid is 1:5 (g / mL); Extract at 85°C for 3 hours, and filter after extraction to obtain cochineal red pigment solution for later use.

[0043] (2) Preparation of enzyme solution: Preparation of polyphenol oxidase solution: Dissolve polyphenol oxidase in phosphate buffer solution with a pH of 6.5 to prepare 20 mg...

Embodiment 3

[0048] The preparation method of the red lyocell fabric obtained by dyeing with animal dye cochineal, the specific method comprises the following steps:

[0049] (1) Preparation of cochineal red pigment solution: choose the dried body of cochineal worm, wash with clean water to remove impurities; boil and reflux with petroleum ether for 8h, and the ratio of material to liquid is 1:6 (g / mL); then boil and reflux with ethanol 8h, the ratio of material to liquid is 1:6 (g / mL), after drying, it is used as a raw material for subsequent use; 10g of raw material is weighed and put into a conical flask, and distilled water extractant is added, and the ratio of material to liquid is 1:7 (g / mL); Extracted at 90°C for 5h, and filtered after the extraction to obtain cochineal red pigment solution for later use.

[0050] (2) Preparation of enzyme solution: Preparation of polyphenol oxidase solution: Dissolve polyphenol oxidase in phosphate buffer solution with a pH of 6.5 to prepare 30 mg / ...

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