CN107059442A - Utilize the method for gardenia blue pigment dyeing cotton fabric - Google Patents

Abstract

The invention discloses a method for dyeing cotton fabric with gardenia blue. The following dyeing method is adopted: pre-mordant treatment-dyeing-post-mordant treatment-post-treatment to dye the cotton fabric. In the pre-media treatment solution, the dosage of mordant is 1%~6% (owf), the dosage of gardenia blue pigment in the dyeing solution is 2%~5% (owf), and the dosage of anhydrous sodium sulfate is 20~40g/L. In the mordant treatment solution, the dosage of mordant is 1%~6% (owf). The use of environmentally friendly mordants in gardenia blue plain-dyed cotton fabrics meets people’s requirements for environmental protection and physical health. Mordant dyeing before dyeing can reduce the repulsion between gardenia blue pigments and cotton fibers and increase the percentage of dyeing. Mordant treatment can improve the color fastness of dyed fabrics. Using zinc sulfate, lanthanum chloride, cerium chloride, and aluminum sulfate as mordants can obtain bright blue cotton fabrics. Among them, zinc sulfate is used as mordant to dye fabrics to achieve a higher degree of vividness. Highest.

Description

Method for plain dyeing cotton fabric with gardenia blue

technical field

The invention belongs to the technical field of dyeing and finishing of fabrics, and in particular relates to a method for plain dyeing cotton fabrics with gardenia blue.

Background technique

With the gradual improvement of people's life modernization, protecting the common living environment of mankind and realizing sustainable development has gradually become the main direction of economic development in all countries in the world. People pay more and more attention to the safety and health of textiles and textile chemicals. Natural Pigment has once again attracted the attention of relevant researchers with its unique characteristics.

In recent years, many researchers at home and abroad have carried out a lot of development and research on the application of natural pigments in textile dyeing. Among them, the research on warm colors such as red, yellow, and brown is the main research, while there is little research on cool blue colors. In the research on cool-toned blue, it is mainly the research on indigo dyeing, but indigo dyeing has poor penetrability and complicated process (it is necessary to first reduce indigo to leuco body, then make the leuco body dye the fiber, and then oxidize it into the original The indigo pigment is fixed on the fiber).

Gardenia blue is a highly water-soluble natural food additive popular in the world. It is a dark blue powder made from gardenia fruit through microbial fermentation or enzyme biotransformation. Because gardenia blue pigment can produce a unique blue tone, it has the advantages of stable physical and chemical properties, good coloring power, and food safety. Since 1989, it has been listed as a food additive approved for use in my country, and it is widely used in food, beverage, and medicine. , daily chemicals and other fields. Dyeing with gardenia blue pigment has the advantages of simple process and easy operation. Gardenia blue pigment has affinity for cotton fiber and can be directly dyed cotton fiber.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for dyeing cotton fabrics with gardenia blue pigment in view of the defects of indigo dyeing such as poor penetrability and complicated process. The dark blue powder produced by the biotransformation effect is environmentally friendly during the dyeing process, the dyeing wastewater is easy to treat, and the dyed products are safe to use.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

The invention discloses a method for dyeing cotton fabrics with gardenia blue, which adopts the following method: pre-mordant treatment-dyeing-post-mordant treatment-post-treatment to dye the cotton fabrics.

The steps of pre-media treatment-dyeing-post-media treatment-post-treatment dyeing cotton fabric are as follows:

(1) Pre-media treatment: Dissolve mordant in water to prepare mordant solution, put cotton fabric wetted with warm water at room temperature, bath ratio 1:20~1:30, heat up to 60~65 at a heating rate of 2°C/min ℃, keep warm for 25~35min;

(2) Dyeing: Dissolve the gardenia blue pigment in water to prepare a dye solution, put it into the pre-mediated cotton fabric at room temperature, the liquor ratio is 1:20~1:30, and then raise the temperature to 60 at a heating rate of 2°C/min. ~65°C, after dyeing for 10 minutes, add anhydrous sodium sulfate to promote dyeing, and continue to keep warm for 30~40 minutes;

(3) Post-mordant treatment: Dissolve the mordant in water to prepare a mordant solution, put the cotton fabric dyed with gardenia blue pigment at room temperature, the bath ratio is 1:20~1:30, and heat up at a heating rate of 2°C/min to 60~65℃, keep warm for 25~35min;

(4) Post-treatment: washing, soaping, washing, drying or natural drying of the cotton fabric after post-media treatment.

The mordant in the step (1) of the dyeing method is one of zinc sulfate, cerium chloride, lanthanum chloride, and aluminum sulfate, and the dosage of the mordant is 1% (owf) to 6% (owf).

In the step (2) of the dyeing method, the consumption of gardenia blue pigment in the gardenia blue dye solution is 2% (owf) ~ 5% (owf), and the consumption of anhydrous sodium sulfate is 20g/L ~ 40 g/L .

The mordant in step (3) of the dyeing method is one of zinc sulfate, cerium chloride, lanthanum chloride, and aluminum sulfate, and the dosage of the mordant is 1% (owf) to 6% (owf).

Beneficial effects of the present invention: gardenia blue is a highly water-soluble and internationally popular natural food additive, and it is a dark blue powder prepared from gardenia fruit through microbial fermentation or enzyme biotransformation. It has the advantages of stable physical and chemical properties, good coloring power, and food safety, and is widely used in food and beverage, medicine, daily chemical and other fields. Dyeing with gardenia blue pigment has the advantages of simple process and easy operation. Compared with indigo dyeing, it has good penetrability, simple process, environmentally friendly dyeing process, and easy dyeing wastewater treatment. Gardenia blue pigment dyeing is in line with the development direction of ecological dyeing and finishing. Mordant treatment before dyeing can reduce the repulsion between gardenia blue pigment and cotton fiber, and increase the percentage of dyeing. After dyeing, mordant treatment can improve the color fastness of dyed fabrics. Zinc sulfate, lanthanum chloride, cerium chloride, sulfuric acid are selected When aluminum is used as mordant, bright blue cotton fabrics can be obtained. The maximum absorption wavelength of dyed cotton fabrics is between 600nm and 610nm. Among them, zinc sulfate is used as mordant to dye fabrics with the highest brightness, and lanthanum chloride and cerium chloride The brightness of the fabric dyed with mordant is second.

detailed description

Example 1

The method of utilizing the gardenia blue plain dyed cotton fabric of the present embodiment, the steps are as follows:

(1) Pre-media treatment: Put the cotton fabric wetted with warm water into the mordant solution containing 1% (owf) zinc sulfate at room temperature, the bath ratio is 1:30, and the temperature is raised to 60°C at a heating rate of 2°C/min, and the heat preservation mordant is dyed. Treat for 25 minutes;

(2) Dyeing: Put the pre-medium-treated cotton fabric into the dye solution containing gardenia blue pigment 2% (owf) at room temperature, the bath ratio is 1:30, and the temperature is raised to 60°C at a heating rate of 2°C/min. Add anhydrous sodium sulfate after 10 minutes of heat preservation and dyeing, the dosage is 20g/L, and continue heat preservation and dyeing for 30 minutes;

(3) Post-mordant treatment: Put the cotton fabric dyed with gardenia blue pigment into the mordant solution containing 1% (owf) zinc sulfate at room temperature, the bath ratio is 1:30, and the temperature is raised to 60°C at a heating rate of 2°C/min , heat preservation and mordant dyeing treatment for 25 minutes;

(4) Post-treatment: post-treatment of the cotton fabric after post-media treatment, post-treatment includes water washing, soaping, water washing, drying or natural drying, specific operations are: cold water washing, warm water washing at 60~70 °C, 3g /L detergent, soap at 80~85°C for 3~5 minutes, wash with warm water at 60~70°C, dry at 80°C or dry at room temperature.

Example 2

The method of utilizing the gardenia blue plain dyed cotton fabric of the present embodiment, the steps are as follows:

(1) Pre-media treatment: put the cotton fabric wetted with warm water into the mordant solution containing 6% (owf) aluminum sulfate at room temperature, the bath ratio is 1:20, and the temperature is raised to 65°C at a heating rate of 2°C/min, and the heat preservation mordant is dyed. Treat for 35 minutes;

(2) Dyeing: Put the pre-medium-treated cotton fabric into the dye solution containing gardenia blue pigment 5% (owf) at room temperature, the bath ratio is 1:20, and the temperature is raised to 65°C at a heating rate of 2°C/min. Add anhydrous sodium sulfate after 10 minutes of heat preservation and dyeing, the dosage is 40g/L, and continue heat preservation and dyeing for 40 minutes;

(3) Post-mordant treatment: Put the cotton fabric dyed with gardenia blue pigment into the mordant solution containing 6% (owf) aluminum sulfate at room temperature, the bath ratio is 1:20, and the temperature is raised to 65°C at a heating rate of 2°C/min , heat preservation and mordant dyeing treatment for 35 minutes;

(4) Post-treatment: post-treatment of the cotton fabric after post-media treatment, including washing, soaping, washing, drying or natural drying.

Example 3

The method of utilizing the gardenia blue plain dyed cotton fabric of the present embodiment, the steps are as follows:

(1) Pre-media treatment: Put the cotton fabric wetted with warm water into the mordant solution containing 2% (owf) lanthanum chloride at room temperature, the bath ratio is 1:30, and the temperature is raised to 60°C at a heating rate of 2°C/min, and kept warm. Mordant treatment for 27 min;

(2) Dyeing: Put the pre-medium-treated cotton fabric into the dye solution containing gardenia blue pigment 3% (owf) at room temperature, the bath ratio is 1:30, and the temperature is raised to 60°C at a heating rate of 2°C/min. After heat preservation and dyeing for 10 minutes, add anhydrous sodium sulfate at a dosage of 30 g/L, and continue heat preservation and dyeing for 33 minutes;

(3) Post-mordant treatment: Put the cotton fabric dyed with gardenia blue pigment into the mordant solution containing 3% (owf) lanthanum chloride at room temperature, the bath ratio is 1:30, and the temperature is raised to 60 at a heating rate of 2°C/min. ℃, heat preservation and mordant treatment for 30 minutes;

(4) Post-treatment: post-treatment of the cotton fabric after post-media treatment, including washing, soaping, washing, drying or natural drying.

Example 4

The method of utilizing the gardenia blue plain dyed cotton fabric of the present embodiment, the steps are as follows:

(1) Pre-media treatment: put the cotton fabric wetted with warm water into the mordant solution containing 3% (owf) cerium chloride at room temperature, the bath ratio is 1:25, and the temperature is raised to 60°C at a heating rate of 2°C/min, and kept warm. Mordant treatment for 30 min;

(2) Dyeing: Put the pre-medium-treated cotton fabric into the dye solution containing gardenia blue pigment 3% (owf) at room temperature, the liquor ratio is 1:25, and the temperature is raised to 60°C at a heating rate of 2°C/min. Add anhydrous sodium sulfate after 10 minutes of heat preservation and dyeing, the dosage is 32g/L, and continue heat preservation and dyeing for 35 minutes;

(3) Post-mordant treatment: Put the cotton fabric dyed with gardenia blue pigment into the mordant solution containing 3% (owf) cerium chloride at room temperature, the bath ratio is 1:25, and the temperature is raised to 60 at a heating rate of 2°C/min. ℃, heat preservation and mordant treatment for 33 minutes;

(4) Post-treatment: post-treatment of the cotton fabric after post-media treatment, including washing, soaping, washing, drying or natural drying.

Example 5

The method of utilizing the gardenia blue plain dyed cotton fabric of the present embodiment, the steps are as follows:

(1) Pre-media treatment: put the cotton fabric wetted with warm water into the mordant solution containing 4% (owf) zinc sulfate at room temperature, the bath ratio is 1:25, and the temperature is raised to 65°C at a heating rate of 2°C/min, and the heat preservation mordant is dyed. Treat for 32 min;

(2) Dyeing: put the pre-medium-treated cotton fabric into the dye solution containing gardenia blue pigment 4% (owf) at room temperature, the bath ratio is 1:25, and the temperature is raised to 60°C at a heating rate of 2°C/min. Add anhydrous sodium sulfate after 10 minutes of heat preservation and dyeing, the dosage is 35g/L, and continue heat preservation and dyeing for 37 minutes;

(3) Post-mordant treatment: Put the cotton fabric dyed with gardenia blue pigment into the mordant solution containing 4% (owf) zinc sulfate at room temperature, the bath ratio is 1:25, and the temperature is raised to 60°C at a heating rate of 2°C/min , heat preservation and mordant dyeing treatment for 34min;

(4) Post-treatment: post-treatment of the cotton fabric after post-media treatment, including washing, soaping, washing, drying or natural drying.

Example 6

The method of utilizing the gardenia blue plain dyed cotton fabric of the present embodiment, the steps are as follows:

(1) Pre-media treatment: Put the cotton fabric wetted with warm water into the mordant solution containing 5% (owf) lanthanum chloride at room temperature, the bath ratio is 1:20, and the temperature is raised to 65°C at a heating rate of 2°C/min, and kept warm. Mordant treatment for 35 min;

(2) Dyeing: Put the pre-medium-treated cotton fabric into the dye solution containing gardenia blue pigment 4% (owf) at room temperature, the liquor ratio is 1:20, and the temperature is raised to 65°C at a heating rate of 2°C/min. Add anhydrous sodium sulfate after 10 minutes of heat preservation and dyeing, the dosage is 30g/L, and continue heat preservation and dyeing for 40 minutes;

(3) Post-mordant treatment: Put the cotton fabric dyed with gardenia blue pigment into the mordant solution containing 5% (owf) zinc sulfate at room temperature, the bath ratio is 1:20, and the temperature is raised to 65°C at a heating rate of 2°C/min , heat preservation and mordant dyeing treatment for 35 minutes;

(4) Post-treatment: post-treatment of the cotton fabric after post-media treatment, including washing, soaping, washing, drying or natural drying.

Example 7

The method of utilizing the gardenia blue plain dyed cotton fabric of the present embodiment, the steps are as follows:

(1) Pre-media treatment: Put the cotton fabric wetted with warm water into the mordant solution containing 3% (owf) cerium chloride at room temperature, the bath ratio is 1:30, and the temperature is raised to 60°C at a heating rate of 2°C/min, and kept warm. Mordant treatment for 30 min;

(2) Dyeing: Put the pre-medium-treated cotton fabric into the dye solution containing gardenia blue pigment 2% (owf) at room temperature, the bath ratio is 1:30, and the temperature is raised to 60°C at a heating rate of 2°C/min. Add anhydrous sodium sulfate after 10 minutes of heat preservation and dyeing, the dosage is 25g/L, and continue heat preservation and dyeing for 32 minutes;

(3) Post-mordant treatment: Put the cotton fabric dyed with gardenia blue pigment into the mordant solution containing 2% (owf) cerium chloride at room temperature, the bath ratio is 1:30, and the temperature is raised to 65 at a heating rate of 2°C/min. ℃, heat preservation and mordant dyeing treatment for 28 minutes;

(4) Post-treatment: post-treatment of the cotton fabric after post-media treatment, including washing, soaping, washing, drying or natural drying.

Determination of fabric apparent color depth K/S value: Measured with CE-7000A SCT high-precision color measuring instrument, using D ₆₅ light source and 10 ^° observation angle, each sample is measured 4 times, and the average value is taken.

Color fastness to soaping: test with reference to GB/T 3921—2008 "Textiles - Tests for color fastness - Color fastness to soaping".

Color fastness to rubbing: test with reference to GB/T 3920-2008 "Textiles - Tests for color fastness - Color fastness to rubbing".

Color fastness to perspiration: test with reference to GB/T 3922—2013 "Textiles - Tests for color fastness - Color fastness to perspiration".

Color fastness to hot pressing: test with reference to GB/T 6152-1997 "Textiles - Tests for color fastness - Color fastness to hot pressing".

Table 1 K/S value and color fastness of cotton fabric after dyeing according to Example 4

Table 2 K/S value and color fastness of cotton fabric after dyeing according to embodiment 5

The measured color fastness of the dyed cotton fabrics all reached the superior product standard of GB/T 411-2008 "Cotton Printing and Dyeing Fabrics".

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. a method utilizing gardenia blue plain dyed cotton fabric is characterized in that adopting following method: pre-media treatment-dyeing-back media treatment-post-treatment cotton fabric is dyed. 2. the method utilizing gardenia blue plain dyed cotton fabric according to claim 1, is characterized in that described pre-media treatment-dyeing-back media treatment-post-treatment dyeing method step is as follows: (1) Pre-media treatment: Dissolve mordant in water to prepare mordant solution, put cotton fabric wetted with warm water at room temperature, bath ratio 1:20~1:30, heat up to 60~65 at a heating rate of 2°C/min ℃, keep warm for 25~35min; (2) Dyeing: Dissolve the gardenia blue pigment in water to prepare a dye solution, put it into the pre-mediated cotton fabric at room temperature, the liquor ratio is 1:20~1:30, and then raise the temperature to 60 at a heating rate of 2°C/min. ~65°C, after dyeing for 10 minutes, add anhydrous sodium sulfate to promote dyeing, and continue to keep warm for 30~40 minutes; (3) Post-mordant treatment: Dissolve the mordant in water to prepare a mordant solution, put the cotton fabric dyed with gardenia blue pigment at room temperature, the bath ratio is 1:20~1:30, and heat up at a heating rate of 2°C/min to 60~65℃, keep warm for 25~35min; (4) Post-treatment: washing, soaping, washing, drying or natural drying of the cotton fabric after post-media treatment. 3. The method for dyeing cotton fabric with gardenia blue pigment according to claim 2, characterized in that: the mordant in the step (1) is zinc sulfate, cerium chloride, lanthanum chloride or aluminum sulfate One, the dosage of mordant is 1% (owf)~6% (owf). 4. The method for dyeing cotton fabrics with gardenia blue pigment according to claim 2, characterized in that: the consumption of gardenia blue pigment in the gardenia blue pigment dyeing solution in the step (2) is 2% (owf) ~5% (owf), the dosage of anhydrous sodium sulfate is 20g/L~40 g/L. 5. The method for dyeing cotton fabric with gardenia blue pigment according to claim 2, characterized in that: the mordant in the step (3) is zinc sulfate, cerium chloride, lanthanum chloride or aluminum sulfate One, the dosage of mordant is 1% (owf)~6% (owf).