CN114645472B - Method for dyeing cotton textile by using pumpkin pigment - Google Patents
Method for dyeing cotton textile by using pumpkin pigment Download PDFInfo
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- CN114645472B CN114645472B CN202210297924.7A CN202210297924A CN114645472B CN 114645472 B CN114645472 B CN 114645472B CN 202210297924 A CN202210297924 A CN 202210297924A CN 114645472 B CN114645472 B CN 114645472B
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- 235000000832 Ayote Nutrition 0.000 title claims abstract description 97
- 235000009854 Cucurbita moschata Nutrition 0.000 title claims abstract description 97
- 240000001980 Cucurbita pepo Species 0.000 title claims abstract description 97
- 235000009804 Cucurbita pepo subsp pepo Nutrition 0.000 title claims abstract description 97
- 235000015136 pumpkin Nutrition 0.000 title claims abstract description 97
- 238000004043 dyeing Methods 0.000 title claims abstract description 90
- 239000000049 pigment Substances 0.000 title claims abstract description 79
- 239000004753 textile Substances 0.000 title claims abstract description 75
- 229920000742 Cotton Polymers 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 21
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 21
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 21
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 21
- 238000005406 washing Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 37
- 239000000284 extract Substances 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 14
- 238000002390 rotary evaporation Methods 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 238000002137 ultrasound extraction Methods 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 51
- 238000000605 extraction Methods 0.000 description 23
- 239000000047 product Substances 0.000 description 16
- 238000002156 mixing Methods 0.000 description 11
- 238000005303 weighing Methods 0.000 description 11
- 239000004744 fabric Substances 0.000 description 10
- 239000001052 yellow pigment Substances 0.000 description 10
- 235000019441 ethanol Nutrition 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229940037003 alum Drugs 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 229910000365 copper sulfate Inorganic materials 0.000 description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 3
- 239000000287 crude extract Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002778 food additive Substances 0.000 description 2
- 235000002864 food coloring agent Nutrition 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000005445 natural material Substances 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000000643 oven drying Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000002411 thermogravimetry Methods 0.000 description 2
- LNSXRXFBSDRILE-UHFFFAOYSA-N Cucurbitacin Natural products CC(=O)OC(C)(C)C=CC(=O)C(C)(O)C1C(O)CC2(C)C3CC=C4C(C)(C)C(O)C(O)CC4(C)C3(C)C(=O)CC12C LNSXRXFBSDRILE-UHFFFAOYSA-N 0.000 description 1
- CVKKIVYBGGDJCR-SXDZHWHFSA-N Cucurbitacin B Natural products CC(=O)OC(C)(C)C=CC(=O)[C@@](C)(O)[C@@H]1[C@@H](O)C[C@]2(C)C3=CC[C@@H]4C(C)(C)C(=O)[C@H](O)C[C@@]4(C)[C@@H]3CC(=O)[C@@]12C CVKKIVYBGGDJCR-SXDZHWHFSA-N 0.000 description 1
- 244000000626 Daucus carota Species 0.000 description 1
- 235000002767 Daucus carota Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- AUNGANRZJHBGPY-SCRDCRAPSA-N Riboflavin Chemical compound OC[C@@H](O)[C@@H](O)[C@@H](O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-SCRDCRAPSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000011481 absorbance measurement Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- OENHQHLEOONYIE-UKMVMLAPSA-N all-trans beta-carotene Natural products CC=1CCCC(C)(C)C=1/C=C/C(/C)=C/C=C/C(/C)=C/C=C/C=C(C)C=CC=C(C)C=CC1=C(C)CCCC1(C)C OENHQHLEOONYIE-UKMVMLAPSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013734 beta-carotene Nutrition 0.000 description 1
- TUPZEYHYWIEDIH-WAIFQNFQSA-N beta-carotene Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C1=C(C)CCCC1(C)C)C=CC=C(/C)C=CC2=CCCCC2(C)C TUPZEYHYWIEDIH-WAIFQNFQSA-N 0.000 description 1
- 239000011648 beta-carotene Substances 0.000 description 1
- 229960002747 betacarotene Drugs 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 235000021466 carotenoid Nutrition 0.000 description 1
- 150000001747 carotenoids Chemical class 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 150000001904 cucurbitacins Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- PIGAXYFCLPQWOD-UHFFFAOYSA-N dihydrocucurbitacin I Natural products CC12C(=O)CC3(C)C(C(C)(O)C(=O)CCC(C)(O)C)C(O)CC3(C)C1CC=C1C2C=C(O)C(=O)C1(C)C PIGAXYFCLPQWOD-UHFFFAOYSA-N 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 235000013376 functional food Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001040 synthetic pigment Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- OENHQHLEOONYIE-JLTXGRSLSA-N β-Carotene Chemical compound CC=1CCCC(C)(C)C=1\C=C\C(\C)=C\C=C\C(\C)=C\C=C\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C OENHQHLEOONYIE-JLTXGRSLSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/34—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using natural dyestuffs
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B61/00—Dyes of natural origin prepared from natural sources, e.g. vegetable sources
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0096—Purification; Precipitation; Filtration
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coloring (AREA)
Abstract
The invention discloses a method for dyeing cotton textile by using pumpkin pigment, which comprises the steps of preparing pumpkin pigment dye liquor; after regulating the pH value of the pumpkin pigment dye liquor, placing the wetted cotton textile into the dye liquor, and simultaneously adding the prepared mordant ferrous sulfate into the dye liquor; heating to dye; after dyeing, cooling to room temperature, washing with water and airing. Dyeing by adopting a same bath medium method, wherein dyed cotton textile has higher affinity; the cotton textile prepared by the method has good dyeing depth and dyeing fastness.
Description
Technical Field
The invention belongs to the field of textile dyeing, and particularly relates to a method for dyeing cotton textiles by using pumpkin pigments.
Background
The pumpkin yellow pigment is a natural pigment extracted from pumpkin, belongs to carrot pigment, and contains beta-carotene and several carotenoid components as main components, sugar substances and the like. The pumpkin yellow pigment is a functional food additive with double functions of coloring and nutrition, has great market potential, fully utilizes a reasonable extraction technology to obtain more and purer pumpkin yellow pigment, and has certain economic and social benefits. Food color is an important component of food additives that are widely used in the food industry to comprehensively improve the appearance and color of foods. The natural pigment has the characteristics of no toxic or side effect, high safety, certain nutritional value and health care function, natural coloring, more approximate to the color of natural substances and the like, and is paid attention to. The pumpkin peel yellow pigment belongs to natural pigment and can be widely applied to industries such as food and the like.
Food colors commonly used at present include two types, natural colors and artificial colors. Natural pigments are derived from natural substances, mainly extracted from plant tissues, and also include some pigments from animals and microorganisms. With the improvement of the society and the improvement of the living standard, the natural pigment is a historic necessity to replace the synthetic pigment, so the natural pumpkin yellow pigment has extremely broad market prospect.
The main defects of the conventional preparation method of pumpkin flavin are as follows: the yield of the pigment finished product is low and the production cost is high; the pigment finished product has poor stability, is easy to decompose and decay when being illuminated and heated; the product has poor solubility and is easy to separate out sediment; the quality guarantee period is short.
Therefore, how to adopt a simple process to produce the natural pigment which has good practicability, high pigment purity, strong stability and no harm to human bodies has important significance. At present, the dyeing of cotton textiles by pumpkin pigments has not been reported yet.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The present invention has been made in view of the above and/or problems occurring in the prior art.
Therefore, the invention aims to overcome the defects in the prior art and provide a method for dyeing cotton textiles by using pumpkin pigments.
In order to solve the technical problems, the invention provides the following technical scheme: a method for dyeing cotton textile by using pumpkin pigment comprises,
preparing pumpkin pigment dye liquor;
after regulating the pH value of the pumpkin pigment dye liquor, placing the wetted cotton textile into the dye liquor, and simultaneously adding the prepared mordant ferrous sulfate into the dye liquor;
heating to dye;
after dyeing, cooling to room temperature, washing with water and airing.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: the pumpkin pigment dye liquor is prepared by the steps of,
drying fructus Cucurbitae Moschatae at 40deg.C, pulverizing with pulverizer, and sieving with 40 mesh sieve;
adding absolute ethyl alcohol into pumpkin powder, and performing ultrasonic-assisted extraction;
filtering the leached feed liquid to obtain an extracting solution, concentrating by rotary evaporation, drying to obtain a pumpkin pigment extract, and preparing the extracting solution with the deionized water to 40g/L to obtain the pumpkin pigment dye solution.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: the mass volume ratio of the pumpkin powder to the absolute ethyl alcohol is 1:10-1:40 g/mL.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: the mass volume ratio of the pumpkin powder to the absolute ethyl alcohol is 1:10g/mL.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: the ultrasonic assisted extraction is carried out, wherein the ultrasonic temperature is 30-70 ℃, the ultrasonic time is 30-90min, and the ultrasonic power is 250W.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: the pH value of the pumpkin pigment dye solution is adjusted, wherein acetic acid is adopted to adjust the pH value to 4-7.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: the volume ratio of the cotton textile to the pumpkin pigment dye liquor is 1:20-60 g/mL.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: and (3) heating to dye, wherein the temperature is raised to 65-95 ℃ and the dyeing time is 30-90 min.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: the concentration of the mordant ferrous sulfate is 1-15 g/L.
As a preferred embodiment of the method for dyeing cotton textiles using pumpkin pigments according to the invention, wherein: the concentration of the mordant ferrous sulfate is 10g/L.
The invention has the beneficial effects that:
(1) According to the invention, pumpkin is used as a raw material, the yellow pigment is extracted from the pumpkin by an ultrasonic auxiliary method, a simple and efficient extraction process which does not damage the physicochemical properties of the yellow pigment is explored, and a certain theoretical basis is provided for development and application of the pumpkin;
(2) The invention provides a method for dyeing cotton textile by using pumpkin pigment, which is simple and easy to understand in operation, and meanwhile, compared with the prior art, the method for dyeing cotton textile by using the pumpkin pigment extracted by the invention has the advantages that the extraction and dyeing time can be effectively saved by using ultrasonic waves to extract the pigment; dyeing by adopting a same bath medium method, wherein dyed cotton textile has higher affinity; ethanol is used as an extraction solvent, so that the consumption of an organic solvent is reduced, and the dyed cotton textile is more environment-friendly; the cotton textile prepared by the method has good dyeing depth and dyeing fastness.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a graph of ultraviolet scanning wavelength for extracting pigments in an embodiment of the invention;
FIG. 2 is a graph of thermogravimetric analysis of an extract according to an embodiment of the present invention;
FIG. 3 is a graph showing the optimum process dyeing effect of cucurbitacin in the embodiment of the invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The invention provides an extraction process for extracting pumpkin yellow pigment by using absolute ethyl alcohol as an extracting agent and ultrasonic assistance, which comprises the following steps:
(1) Slicing fructus Cucurbitae Moschatae, sun drying, oven drying at 50deg.C, grinding, and sieving with 40 mesh sieve;
(2) Placing the pumpkin powder in the step (1) into an extracting agent, adding an ethanol aqueous solution with the feed liquid ratio of 1:10-1:40 and the content of 70-100%, and performing ultrasonic extraction at the temperature of 30-70 ℃ for 30-90min to obtain a pumpkin pigment crude extract;
(3) Vacuum filtering the pumpkin pigment crude extract obtained in the step (2) to remove insoluble impurities;
(4) Determining the maximum absorption peak value of the pumpkin yellow pigment in the step (3): adding absolute ethyl alcohol into the supernatant to dilute, comparing the absolute ethyl alcohol, scanning the supernatant with an ultraviolet-visible spectrophotometer within the range of 200nm to 750nm to determine a maximum absorption peak, and then measuring absorbance at the maximum absorption wavelength to obtain the extraction condition of Huang Suse with optimal process optimization;
(5) And (3) carrying out rotary evaporation concentration on the pumpkin crude extract in the step (3) to remove ethanol, thereby obtaining a pumpkin pigment crude product.
(6) Obtaining the optimal process conditions: during extraction, experimental analysis of control variables is respectively carried out on the ethanol concentration, the feed liquid ratio, the ultrasonic time and the extraction temperature to obtain the influence of the single-factor experimental extraction rate and obtain the optimal extraction condition; wherein,
the pumpkin is red skin pumpkin of Shandong Weifang producing area. The pumpkin yellow pigment has a maximum absorption peak at 445nm, and 445nm is selected for measurement in the subsequent absorbance measurement.
The following is a single factor table 1 for ultrasonic extraction of pumpkin pigments.
TABLE 1
| Horizontal level | A. Ethanol concentration | B. Time of | C. Bath ratio | D. Temperature (temperature) |
| 1 | 70％ | 30 | 1:10 | 30 |
| 2 | 85％ | 60 | 1:20 | 50 |
| 3 | 100％ | 90 | 1:40 | 70 |
TABLE 2 orthogonal experimental design table
Table 3 analytical table
| K value | A | B | C | D |
| k1 | 0.124 | 0.195 | 0.366 | 0.206 |
| k2 | 0.225 | 0.282 | 0.215 | 0.178 |
| k3 | 0.347 | 0.220 | 0.116 | 0.313 |
| R | 0.223 | 0.087 | 0.250 | 0.136 |
| Preferred level | A3 | B2 | C1 | D3 |
As can be seen from the analysis of the above table, the optimal condition is A 3 B 2 C 1 D 3 Therefore, the extracts used in the following specific examples were stained under the optimum extraction conditions.
Example 1
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/mL of absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L of extract by deionized water;
(2) Acetic acid is adopted to adjust the pH value of the extracting solution to 4, and the volume ratio of cotton textile to the extracting solution is 1:20g/mL of added textile, 10g/L of mordant ferrous sulfate;
(3) Heating the extracting solution to 65 ℃, dyeing for 30min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
Example 2
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/mL of absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L of extract by deionized water;
(2) Adjusting the pH value of the extracting solution to 5.5, and according to the volume ratio of cotton textile to the extracting solution liquid of 1: adding 40g/mL of textile, and adding 10g/L of mordant ferrous sulfate;
(3) Heating the extracting solution to 65 ℃, dyeing for 60min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
Example 3
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/mL of absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L of extract by deionized water;
(2) Adjusting the pH value of the extracting solution to 7, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1:60g/mL of added textile, 10g/L of mordant ferrous sulfate;
(3) Heating the extract to 65deg.C, and dyeing for 90min; after dyeing, slowly cooling to room temperature, washing with water and airing to obtain the finished product.
Example 4
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/mL of absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L of extract by deionized water;
(2) Adjusting the pH value of the extracting solution to 7, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1:20g/mL of cotton textile is added, and 10g/L of mordant ferrous sulfate is added;
(3) Heating the extracting solution to 80 ℃, dyeing for 60min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
Example 5
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/mL of absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L of extract by deionized water;
(2) Adjusting the pH value of the extracting solution to 4, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1: adding 40g/mL cotton textile, and adding 10g/L mordant ferrous sulfate;
(3) Heating the extracting solution to 80 ℃, dyeing for 90min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
Example 6
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/mL of absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L of extract by deionized water;
(2) Adjusting the pH value of the extracting solution to 5.5, and according to the volume ratio of cotton textile to the extracting solution liquid of 1:60g/mL of cotton textile is added, and 10g/L of mordant ferrous sulfate is added;
(3) Heating the extracting solution to 80 ℃, dyeing for 30min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
Example 7
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/mL of absolute ethyl alcohol, mixing uniformly, extracting with ultrasonic assistance at 70deg.C for 60min, filtering the extractive solution, concentrating by rotary evaporation, and oven drying to obtain pumpkin pigment extract, wherein ultraviolet scanning wavelength diagram of the extract pigment is shown in figure 1, and thermogravimetric analysis diagram of the extract is shown in figure 2.
(2) Preparing 40g/L extracting solution by deionized water, adjusting the pH value of the extracting solution to 5.5, and according to the volume ratio of cotton fabric to the extracting solution of 1:20g/mL of cotton textile is added, and 10g/L of mordant ferrous sulfate is added;
(3) Heating the extracting solution to 95 ℃, dyeing for 90min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
The optimal process dyeing effect diagram of the pumpkin pigment is shown in fig. 3.
Example 8
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/mL of absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L of extract by deionized water;
(2) Adjusting the pH value of the extracting solution to 7, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1: adding 40g/mL cotton textile, and adding 10g/L mordant ferrous sulfate;
(3) Heating the extracting solution to 95 ℃, dyeing for 30min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
Example 9
The embodiment provides a method for dyeing cotton textile by using pumpkin pigment, which comprises the following steps:
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/L absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L extract by deionized water;
(2) Adjusting the pH value of the extracting solution to 4, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1:60g/mL of cotton textile is added, and 10g/L of mordant ferrous sulfate is added;
(3) Heating the extracting solution to 95 ℃, dyeing for 60min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
The dyed textiles obtained in examples 1 to 9 were tested:
apparent colour depth of dyed fabric: the apparent color depth of the dyed fabric was measured using a color measuring and matching instrument, and the color depth of the dyed fabric was characterized by a K/S value, and the results are shown in table 4.
Fastness to dyeing
Fastness to rubbing: measured according to the textile color fastness to rubbing test. Under certain conditions, the test sample is rubbed with a standard friction small white cloth, and the degree of color transfer to the small white cloth is evaluated by using a gray card, and the result is shown in Table 4;
fastness to soaping: measured according to the "fastness to washing of textile colour fastness test". The mass concentration of the neutral soap flakes is 5g/L, the bath ratio is 1:50, the soap is washed for 30min at 40 ℃, and the results are shown in Table 4;
color fastness to sunlight: measured according to the light fastness.
TABLE 4 dyeing depth and color fastness of cotton textiles prepared from pumpkin pigment extract
As can be seen from Table 1, the cotton textiles prepared from the pumpkin pigment extract had a higher grade of dyeing depth and color fastness.
Comparative example 1
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/L absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L extract by deionized water;
(2) Blank dyeing: adjusting the pH value of the extracting solution to 7, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1:60g/mL of cotton textile is added, and no mordant is added; heating the extracting solution to 95 ℃, dyeing for 60min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
(3) Pre-mordant dyeing: before cotton fabric is dyed, pretreatment bath ratio of mordant alum, ferrous sulfate and copper sulfate with the same concentration of 10g/L is 1:50 respectively, the temperature is 80 ℃, after 30min (parallel experiment), after washing, the pH value of the extracting solution is adjusted to 7, and according to the volume ratio of cotton fabric to extracting solution liquid of 1:60g/mL of cotton textile was added. Heating the extracting solution to 95 ℃, dyeing for 60min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
(4) One-bath mordant dyeing: adjusting the pH value of the extracting solution to 7, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1:60g/mL cotton fabric is added, and 10g/L mordant alum, ferrous sulfate and copper sulfate are respectively added (parallel experiment); heating the extracting solution to 95 ℃, dyeing for 60min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
(5) Post mordant dyeing: adjusting the pH value of the extracting solution to 7, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1:60g/mL cotton fabric is added, the temperature of the extracting solution is raised to 95 ℃, after dyeing is finished for 60min, the temperature is slowly reduced to room temperature, water washing is carried out, and 10g/L mordant alum, ferrous sulfate and copper sulfate are respectively added for a post-treatment bath ratio of 1:50, the temperature is 40 ℃ and 30min later (parallel experiments); air drying to obtain the final product.
All the dyeing steps are the same as those in the embodiment, uniform dyeing conditions are used, but the used mordants are different, the mordant dyeing modes and the mordant dosage are different, and the colors are different to a certain extent.
As shown in table 5 below:
TABLE 5
The K/S value is the largest when the mordant ferrous sulfate is used for one-bath mordant dyeing.
Comparative example 2
(1) Accurately weighing pumpkin powder which is dried, crushed and screened by a 40-mesh screen, and according to the volume ratio of the feed liquid of 1: adding 10g/L absolute ethyl alcohol, uniformly mixing, adopting ultrasonic auxiliary extraction at 70 ℃ for 60min, filtering the extracted feed liquid, carrying out rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L extract by deionized water;
(2) Adjusting the pH value of the extracting solution to 7, and according to the volume ratio of the cotton textile to the extracting solution liquid of 1:60g/mL of cotton textile is added, and 1-15g/L of mordant ferrous sulfate is added;
(3) Heating the extracting solution to 95 ℃, dyeing for 60min, slowly cooling to room temperature after dyeing is finished, washing with water, and airing to obtain the finished product.
Table 6 dyeing with different concentrations of ferrisulphas mordants
From the above table, it can be seen that the ferrous sulfate mordant of 1-15g/L, wherein the values of K/S and K/S are maximum in 10g/L and 12.5g/L, the coloring effect is better, and the calculation is convenient, so that the mordant of 10g/L is taken for mordant.
The invention provides a method for dyeing cotton textile by using pumpkin pigment, which is simple and easy to understand in operation, and meanwhile, compared with the prior art, the method for dyeing cotton textile by using the pumpkin pigment extracted by the invention has the advantages that the extraction and dyeing time can be effectively saved by using ultrasonic waves to extract the pigment; dyeing by adopting a same bath medium method, wherein dyed cotton textile has higher affinity; ethanol is used as an extraction solvent, so that the consumption of an organic solvent is reduced, and the dyed cotton textile is more environment-friendly; the cotton textile prepared by the method has good dyeing depth and dyeing fastness.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (3)
1. A method for dyeing cotton textiles by using pumpkin pigments, which is characterized by comprising the following steps: comprising the steps of (a) a step of,
preparing pumpkin pigment dye liquor: drying fructus Cucurbitae Moschatae at 40deg.C, pulverizing with pulverizer, and sieving with 40 mesh sieve;
adding absolute ethyl alcohol into pumpkin powder, and performing ultrasonic-assisted extraction, wherein the mass-volume ratio of the pumpkin powder to the absolute ethyl alcohol is 1:10g/mL;
filtering the leached feed liquid to obtain an extracting solution, performing rotary evaporation concentration and drying to obtain a pumpkin pigment extract, and preparing 40g/L extracting solution by using deionized water to obtain a pumpkin pigment dye solution;
after regulating the pH value of the pumpkin pigment dye liquor, placing the wet cotton textile into the dye liquor, and simultaneously adding the prepared mordant ferrous sulfate into the dye liquor, wherein acetic acid is adopted to regulate the pH value to 4-7, and the concentration of the mordant ferrous sulfate is 10g/L;
heating to dye, wherein the temperature is raised to 65-95 ℃ and the dyeing time is 30-90 min;
after dyeing, cooling to room temperature, washing with water and airing.
2. A method of dyeing cotton textiles with pumpkin pigments according to claim 1, characterized in that: the ultrasonic assisted extraction is carried out, wherein the ultrasonic temperature is 30-70 ℃, the ultrasonic time is 30-90min, and the ultrasonic power is 250W.
3. A method of dyeing cotton textiles with pumpkin pigments according to claim 1, characterized in that: the volume ratio of the cotton textile to the pumpkin pigment dye liquor is 1:20-60 g/mL.
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| CN104825360A (en) * | 2015-05-06 | 2015-08-12 | 江南大学 | Method for preparing natural hair dye from pumpkin |
| CN109371715A (en) * | 2018-11-29 | 2019-02-22 | 刘日昇 | A method of it extracting cordate houttuynia pigment and cotton-spinning fabric is dyed |
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| CN104825360A (en) * | 2015-05-06 | 2015-08-12 | 江南大学 | Method for preparing natural hair dye from pumpkin |
| CN109371715A (en) * | 2018-11-29 | 2019-02-22 | 刘日昇 | A method of it extracting cordate houttuynia pigment and cotton-spinning fabric is dyed |
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