CN116536908A - Enzyme color-eluting method of indigo jean - Google Patents
Enzyme color-eluting method of indigo jean Download PDFInfo
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- CN116536908A CN116536908A CN202310446466.3A CN202310446466A CN116536908A CN 116536908 A CN116536908 A CN 116536908A CN 202310446466 A CN202310446466 A CN 202310446466A CN 116536908 A CN116536908 A CN 116536908A
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- jean
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- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 235000000177 Indigofera tinctoria Nutrition 0.000 title claims abstract description 52
- 229940097275 indigo Drugs 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 52
- 102000004190 Enzymes Human genes 0.000 title claims abstract description 17
- 108090000790 Enzymes Proteins 0.000 title claims abstract description 17
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 69
- 108010001336 Horseradish Peroxidase Proteins 0.000 claims abstract description 29
- 238000005406 washing Methods 0.000 claims abstract description 28
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 56
- 238000004042 decolorization Methods 0.000 claims description 49
- 239000000243 solution Substances 0.000 claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 40
- 239000007853 buffer solution Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 19
- 238000004321 preservation Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 12
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000000872 buffer Substances 0.000 claims description 3
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 2
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- 239000002357 osmotic agent Substances 0.000 claims 2
- 239000004744 fabric Substances 0.000 abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000012216 screening Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000012224 working solution Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 20
- 230000000149 penetrating effect Effects 0.000 description 20
- 238000003756 stirring Methods 0.000 description 18
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 17
- 239000001632 sodium acetate Substances 0.000 description 17
- 235000017281 sodium acetate Nutrition 0.000 description 17
- 229940088598 enzyme Drugs 0.000 description 14
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 108010029541 Laccase Proteins 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 6
- 108010059892 Cellulase Proteins 0.000 description 5
- 229940106157 cellulase Drugs 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 238000004043 dyeing Methods 0.000 description 4
- COHYTHOBJLSHDF-BUHFOSPRSA-N indigo dye Chemical compound N\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-BUHFOSPRSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- 244000170916 Paeonia officinalis Species 0.000 description 1
- 235000006484 Paeonia officinalis Nutrition 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000009990 desizing Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/40—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using enzymes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention discloses an enzyme eluting method of indigo jean, belonging to the field of jean water washing and decoloring. The invention utilizes horseradish peroxidase/H 2 O 2 The catalytic system optimizes the formula of the working solution by screening and is based on H with a specific proportion 2 O 2 And the synergistic effect of the horseradish peroxidase, acetic acid and acetate on the jean improves the decoloring efficiency of the jean, and achieves the purposes of efficiently decoloring and reducing the damage of the fabric. The jean after being treated by the method can realize the synchronous realization: high decoloring rate, low strength loss, short treatment flow, simple equipment, convenient operation and high production efficiency, and can be applied to industrialized production and processing.
Description
Technical Field
The invention relates to an enzyme eluting method of indigo jean, belonging to the field of jean water washing and decoloring.
Background
The jean fabric is deeply favored by consumers in each layer due to the unique appearance and the solid wear-resistant wearing performance, and partial dye is removed through proper after-finishing, so that the jean fabric is uniformly decolorized or partially decolorized, and the jean fabric is endowed with a colorful style effect, so that the decolorization finishing of the jean fabric is particularly important.
Traditional physical method decolorization, such as stone mill finishing, has great damage to the fabric main body and even causes the damage of the fabric; the common chemical method for decoloring mainly utilizes strong oxidant or bleaching agent and the like to destroy indigo dye, so that the fabric is decolorized, the treated fabric is easy to yellow and embrittle, and the wearability of the jean is affected seriously; the enzyme washing finishing can effectively avoid the problems, and common washing decolorization finishing mainly comprises decolorization of cellulase, laccase and the like.
The cellulose enzyme can make the surface cellulose of the jean fabric shed under specific conditions, the indigo dye attached to the shed fibers can also be stripped off, and some shed dye can be deposited and attached to the surface of the fabric, so that the fabric is easy to return to staining after being treated by the cellulose enzyme, and the fabric is damaged by the cellulose enzyme. Laccase mainly acts on the indigo in the aqueous phase, so that the indigo fallen into the aqueous phase is decomposed, the indigo in the aqueous phase is prevented from being stained back on the jean, when the indigo acts on the jean independently, the stripping and polishing effects are poor, so that laccase is mostly used for treating the indigo dye in the wastewater, and seldom is independently used for decoloring the jean.
Disclosure of Invention
[ technical problem ]
The existing enzyme washing finishing process has low decolorizing efficiency, the treated denim is easy to be stained back, wherein the strength of the denim treated by the acid cellulase is damaged, and the clothing performance of the denim is affected.
Technical scheme
In order to solve the problems of low decolorizing efficiency, poor decolorizing effect and the like of the existing indigo dyed jean, the invention provides an energy-saving and environment-friendly decolorizing method, which particularly utilizes horseradish peroxidase/H 2 O 2 Soaking indigo dyed denim in a solution containing horseradish peroxidase/H at pH 5-7 2 O 2 Is taken out after full reaction in the buffer solution of the decoloring system, and can achieve better decoloring rate and lower decoloring rate after washing and dryingStrong damage.
A first object of the present invention is to provide an enzyme-eluting method of indigo jean, comprising the steps of:
immersing indigo jean in buffer solution with pH of 5-7, adding horseradish peroxidase, dissolving, and adding H 2 O 2 Uniformly mixing the solutions to obtain a mixture;
and heating and preserving heat for decoloring the mixture, and washing and drying after decoloring to obtain the decolored denim.
In one embodiment of the present invention, the bath ratio (mass ratio) of the indigo jean and the buffer is 1:10 to 40 percent.
In one embodiment of the invention, the buffer solution with the pH of 5-7 consists of acetic acid, acetate and penetrating agent or consists of sodium dihydrogen phosphate and sodium bicarbonate; wherein the mass ratio of the acetic acid to the acetate to the penetrating agent is (7-15): 3-9): 1; the penetrating agent is penetrating agent JFC.
In one embodiment of the invention, the addition amount of the horseradish peroxidase is 1-10% (owf); the enzyme activity is 30-60U/mg.
In one embodiment of the invention, the horseradish peroxidase is dissolved by stirring for 1-10 min.
In one embodiment of the invention, the H 2 O 2 The solution is H with the mass fraction of 30% 2 O 2 An aqueous solution; the concentration is 1-5 mL/L.
In one embodiment of the invention, the decoloring is carried out by heating to 20-50 ℃ according to the heating rate of 0.5-3 ℃/min, and carrying out heat preservation reaction for 60-80 min under the condition that the oscillation rate is 60-120 r/min.
The second object of the present invention is denim after decolorization prepared by the method of the present invention.
A third object of the present invention is the use of the decolorizing method according to the present invention in the textile field.
[ advantageous effects ]
The inventionProvides an enzyme elution color method for indigo dyeing Niu Bu by horseradish peroxidase/H 2 O 2 And the catalytic system decomposes the indigo dye to generate micromolecular colorless substances such as aniline, benzoic acid, toluene and the like, thereby achieving the purpose of decoloring. By screening and optimizing the formula of the working solution, H based on a specific proportion 2 O 2 And the synergistic effect of the horseradish peroxidase, acetic acid and acetate on the jean improves the decoloring efficiency of the jean, and achieves the purposes of efficiently decoloring and reducing the damage of the fabric. The jean after being treated by the method can realize the synchronous realization: high decoloring rate, low strength loss, short treatment flow, simple equipment, convenient operation and high production efficiency, and can be applied to industrialized production and processing:
specific:
(1) High decoloring rate and low strong damage: different decolorizing effects can be achieved by controlling decolorizing conditions, the decolorizing rate can reach more than 80%, the strong retention rate of the treated denim is 97.9%, the strong loss is small, and the method is obviously superior to other enzyme washing finishing methods;
(2) The treatment process is short, and the operation is convenient: compared with the traditional chemical agents, such as sodium hypochlorite, rongalite and other decolorizers, the decolorization method disclosed by the invention has the advantages that the required temperature is low, only 20-50 ℃ is needed, the equipment requirement is low, and the required energy consumption is low;
(3) Economic benefit: in the decoloring method adopted by the invention, the related chemical reagents are fewer, the generated environmental pollution is low, and the method accords with the concept of environmental protection. Meanwhile, the process is simple and reliable, has low requirements on equipment, and is easy to realize industrial production.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for better illustration of the invention, and should not be construed as limiting the invention.
The testing method comprises the following steps:
1. the method for measuring the decoloring rate comprises the following steps:
the K/S values before and after the decolorization were measured by a Datacolor calorimeter, and the decolorization ratio was calculated by using the formula (1).
In the formula (1), K/S u K/S value for fabric not decolorized; K/S t The K/S value of the fabric after decolorization treatment.
2. Testing of Strong Retention Rate:
the fabric breaking strength before and after decoloring was measured by a YG065 type electronic fabric strength machine, and the strength retention was calculated by using the formula (2).
Fu is the fabric strength without decolorization, and Ft is the fabric strength after decolorization.
The starting materials used in the examples and comparative examples were:
indigo jean (without desizing pretreatment): 20cm by 30cm; purchased from black peony textile Co., ltd., gram weight of 374g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the 236X 170 (warp density X weft density, root/10 cm); the K/S value is 7.44 by testing with a Datacolor color meter;
the enzyme activity of horseradish peroxidase is 30-60U/mg; purchased from novelin;
H 2 O 2 the solution is H with the mass fraction of 30% 2 O 2 An aqueous solution;
the enzyme activity of the cellulase is 50000U/mg; purchased from novelin;
the enzyme activity of laccase is 20000U/mg; purchased from novelin.
Example 1
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding horseradish peroxidase with concentration of 1% (owf), stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 1.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 25 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 2
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 1.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 25 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 3
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 1mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 25 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 4
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jeanAdding into buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC at a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 25 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 5
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 25 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 6
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 3mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 25 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 7
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:20, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 25 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 8
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:30, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 25 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 9
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution was 2.5mL/L, and uniformly mixing to obtain a mixture;
and heating the mixture to 35 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 10
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding 3% (owf) horseradish peroxidase, stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 45 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 11
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrant JFC, mass ratio of 14:9:2), adding horseradish peroxidase with concentration of 3% (owf), stirring for 5min until it is dissolved, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 35 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 12
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10 immersing indigo jean in a buffer having a pH of 4Adding 3% (owf) horseradish peroxidase into the solution (composed of acetic acid, sodium acetate and penetrating agent JFC at mass ratio of 7:4:1), stirring for 5min, and adding H when it is dissolved 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 35 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 13
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC, mass ratio of 7:3:1) with pH 5, adding 3% (owf) horseradish peroxidase, stirring for 5min, and dissolving to give solution, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 35 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Example 14
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC, mass ratio of 7:2:1) with pH of 6, adding 3% (owf) horseradish peroxidase, stirring for 5min, and dissolving to give solution, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the mixture is obtained after uniform mixing;
and heating the mixture to 35 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Comparative example 1
Horseradish peroxidase and H in example 13 were omitted 2 O 2 The solution was kept the same as in example 13 to obtain denim after decolorization.
Comparative example 2
The horseradish peroxidase in example 13 was omitted, and the other was kept the same as in example 13 to obtain denim after decolorization.
Comparative example 3 addition of acetylacetone
Acetylacetone was added on the basis of example 13, specifically as follows:
according to the bath ratio of 1:10, immersing indigo jean in buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC, mass ratio of 7:3:1) with pH 5, adding 3% (owf) horseradish peroxidase, stirring for 5min, and dissolving to give solution, and adding H 2 O 2 Solution of H 2 O 2 The concentration of the solution is 2.5mL/L, and the solution is uniformly mixed; adding acetylacetone to make the mass concentration of acetylacetone in the mixture be 3%, and uniformly mixing to obtain a mixture;
and heating the mixture to 35 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a water bath oscillator 120r/min for heat preservation for 70min for decolorization, and after the decolorization is finished, washing and drying to obtain the decolorized denim.
Specific parameter designs and test results for examples and comparative examples are presented in table 1:
table 1 specific parameter design and test results for examples and comparative examples
Comparative example 4 cellulase enzymatic washing
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:15, immersing the indigo jean in a buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with pH of 4.5, adding cellulase with concentration of 3% (owf), stirring for 5min, and uniformly mixing to obtain a mixture;
and heating the mixture to 60 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a high-temperature and high-pressure dyeing machine, preserving the temperature for 60min for stripping, washing and drying after the decolorization is finished, and obtaining the denim after the decolorization.
Performing performance test on the obtained denim after decolorization, wherein the test result is as follows:
the decoloring rate is 11.1%, and the strong retention rate is 85.5%. The method can cause strong damage to the fabric, and the fabric strength is obviously reduced.
Comparative example 5 laccase enzyme washing
An enzyme-eluting method of indigo jean, comprising the steps of:
according to the bath ratio of 1:10, immersing indigo jean in a buffer solution (composed of acetic acid, sodium acetate and penetrating agent JFC in a mass ratio of 10:5:1) with a pH of 4.5, adding laccase with a concentration of 3% (owf), stirring for 5min, and uniformly mixing to obtain a mixture;
and heating the mixture to 70 ℃ according to the heating rate of 2 ℃/min, then placing the mixture into a high-temperature and high-pressure dyeing machine, preserving the temperature for 60min for stripping, and washing and drying after the decolorization is finished to obtain the decolorized denim.
Performing performance test on the obtained denim after decolorization, wherein the test result is as follows:
the decoloring rate is 3.4%, and the strong retention rate is 98.7%. The method has the advantages of general fabric decoloring effect, less strong damage and insignificant fabric strength drop.
In summary, the invention provides an enzyme eluting method for indigo dyeing jean fabric, which contains less chemical auxiliary agents and provides a corresponding decolorizing method. The denim fabric treated by the decoloring method has obvious decoloring effect, the decoloring rate can reach 80 percent, and meanwhile, the strong retention rate is higher, so that the decoloring finishing requirement of the denim fabric can be met.
While the invention has been described with reference to the preferred embodiments, it is not limited thereto, and various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An enzyme-eluting method of indigo jean, comprising the steps of:
immersing indigo jean in buffer solution with pH of 5-7, adding horseradish peroxidase, dissolving, and adding H 2 O 2 Uniformly mixing the solutions to obtain a mixture;
and heating and preserving heat for decoloring the mixture, and washing and drying after decoloring to obtain the decolored denim.
2. The method according to claim 1, wherein the bath ratio (mass ratio) of the indigo jean and the buffer is 1:10 to 40 percent.
3. The method according to claim 1, wherein the buffer solution with pH of 5-7 consists of acetic acid, acetate, penetrant or sodium dihydrogen phosphate and sodium bicarbonate.
4. A method according to claim 3, wherein the osmotic agent is osmotic agent JFC.
5. The method of claim 1, wherein the horseradish peroxidase is added in an amount of 1-10% (owf); the enzyme activity is 30-60U/mg.
6. The method according to claim 3, wherein the mass ratio of the acetic acid, the acetate and the penetrant is (7-15): 3-9): 1.
7. The method of claim 1, wherein said H 2 O 2 The solution is H with the mass fraction of 30% 2 O 2 An aqueous solution; the concentration is 1-5 mL/L.
8. The method according to claim 1, wherein the decoloring is performed by heating to 20-50 ℃ at a heating rate of 0.5-3 ℃/min, and reacting for 60-80 min under the condition of heat preservation at a vibration rate of 60-120 r/min.
9. Denim after decolorization prepared by the method of any of claims 1-8.
10. Use of the method according to any one of claims 1-8 in the textile field.
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