CN101565902B - Wool-fabric protease anti-felting method based on weak oxidation and cutinase pretreatment - Google Patents
Wool-fabric protease anti-felting method based on weak oxidation and cutinase pretreatment Download PDFInfo
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- CN101565902B CN101565902B CN2009100315528A CN200910031552A CN101565902B CN 101565902 B CN101565902 B CN 101565902B CN 2009100315528 A CN2009100315528 A CN 2009100315528A CN 200910031552 A CN200910031552 A CN 200910031552A CN 101565902 B CN101565902 B CN 101565902B
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Abstract
The invention provides a wool-fabric protease anti-felting method based on weak oxidation and cutinase pretreatment, which belongs to the technical field of dyeing and finishing of wool fabric in the wool-spinning industry. The method aims to overcome the defects that the chlorination-process for wool-felting prevention seriously pollutes environment and the single protease-method treatment is poor in fabric wettability and high in felting rate in order to achieve the aim of optimizing the protease treatment effect of the wool fabric. All-wool grey fabric is extracted in a chloroform-methanol or carbon tetrachloride-methanol solution to remove free oily impurities, is pretreated with hydrogen peroxide and cutinase in turn to improve the hydrophilicity of the fiber surface, and then is subjected to reduction processing in a protease solution so as to realize biological processing combined with wool enzyme reduction. The method makes the prior chlorination-process felting prevention replaced with a biological-method wool-felting prevention process, and the method not only can effectively improve the reduction rate and anti-felting effect of the wool fabric, and promote the improvement of fabric wettability, but also can effectively increase the dyeing depth of fabric, and reduce fiber damage in reduction processing, and is favorable for protecting ecological environment.
Description
Technical field
A kind of based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, belong to the applied technical field that woolen dyeing and finishing is processed in the wool industry.
Background technology
Wool has feltability, and wool fabric is subjected to external force and does the time spent and can produce felting under humid tropical condition, area is shunk, alteration of form, and fine hair is outstanding, and elasticity reduces, and feel is coarse, appearance of fabrics and take performance and had a strong impact on.Therefore, need carry out to remove scale layer to wool fabric be the decrement feld proofing of purpose.At present, the wool anti-felting finishing effect better and most widely used be chloridizing, handle as adopting hypochlorite or DCCA salt (DCCA).Fiber was easily inhaled the chlorine yellowing when chloridizing was handled wool, and fabric feeling is coarse, and is easily irregular during dyeing, and the organic chloride in the processed waste water (AOX) content is quite high, and environment is had adverse effect.
Protease anti-felting is to utilize protease the hydrolysis of the big molecule peptide bond of wool fibre to be made the generation such as scale, cell membrane complexes of wool be partly dissolved, reach part and remove the purpose of scale, having characteristics such as treatment conditions gentleness, energy savings and minimizing pollution, is a kind of felt-proofing finishing method of environmental protection.Because the wool scale top layer is made up of the lipid material of marshalling (primary structure is 20 acid and 20 acid of 18-methyl), and combine with ester bond and thioester bond, have extremely strong hydrophobicity with protein under the lipoid layer.Therefore, when wool being carried out feld proofing, generally need carry out Chemical Pretreatment, increasing the hydrophily of fiber surface, and then handle, remove wool surface scale with protease to the wool surface with protease.Though the conventional chemical preliminary treatment can increase the decrement effect of protease, but because the fiber scale layer processing uniformity is wayward, easily cause the wool fibre internal injury, wool fabric shows as after the Protease Treatment weightlessly to be increased, powerful decline and felting is effect improved limited, therefore is difficult to obtain practical application in preventing felting and shrinking of wood fabric processing.
The hydrogen peroxide conduct is than the environment-friendly type oxidant, when under low concentration mitigation condition, being applied to the wool fibre processing, can change the state of fiber surface hydrophobic layer continuous distributed, by part disulfide bond in the oxidation scale layer, also can increase the accessibility of enzyme molecule to scale keratin substrate, simultaneously be unlikely to again to cause bigger fibre damage, help the processing of wool enzyme process felt proofing.At is mainly derived from fungi and bacterium, is a kind of ester bond that can destroy cutin polymer molecule, and makes its hydrolase that is hydrolyzed to monomer and micromolecule oligomer, and the ester bond in the hydrophobicity lipoid structure of wool scale top layer is had certain catalyzing hydrolysis ability.Wool fibre is after mild oxidation, at increases the hydrolysis effect of wool fibre top layer lipoid substrate, and the fiber surface hydrophily further strengthens, and has promoted follow-up protease to the keratic hydrolysis of wool fibre scale, increase the effect of woolen felt proofing, and environmental pollution is less.
Summary of the invention
Purpose of the present invention is intended to improve the processing effect of Wool-fabric protease anti-felting.Use the present invention can improve the wettability of wool fabric, reduce the felting rate of wool fabric, it is big to solve the fibre damage of traditional chloridizing preventing felting and shrinking of wood fabric, and the technical problem that environmental pollution is serious reaches the optimization process effect, improves environment, improves the purpose of all woolen product quality.
Technical scheme of the present invention: a kind of based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, all-wool grey fabric behind the abstraction impurity removal is adopted hydrogen peroxide, at solution-treated successively, carry out the protease post processing processing of wool fabric again;
(1) extraction preliminary treatment: wool fabric places chloroform-methanol or carbon tetrachloride-methanol solvate, reflux extraction 2-24 hour, removes the cloth cover residual impurity with ethanol or methyl alcohol and hot water wash successively again;
(2) weak oxide preliminary treatment: the impregnation process in hydrogenperoxide steam generator of the wool fabric after the extraction, handle the abundant washing of back fabric;
Weak oxide pretreating process condition: handle and bathe to containing the solution of mass concentration 30% hydrogen peroxide 1～5g/L, wetting and penetrating agent 0～20g/L, pH7.0～9.0, temperature 40-60 ℃, processing time 0.25～1h;
(3) at is handled: the pretreated wool fabric of weak oxide impregnation process at solution, handle the abundant washing of back fabric;
At treatment process condition: handle the solution of bathing, pH7.0～9.0,30～60 ℃ of temperature, processing time 1～6h at mass concentration 0.5%～5.0%, wetting and penetrating agent 0～20g/L;
(4) Protease Treatment: the wool fabric impregnation process in protein enzyme solution after at is handled;
Protease Treatment process conditions: handle the solution of bathing, pH7.0～9.0,30～60 ℃ of temperature, processing time 0.5～2h to protease mass concentration 0.2%～2.0%, wetting and penetrating agent 0～20g/L;
(5) enzyme that goes out: add 0.5～5.0mol/L trichloroacetic acid in the solution after Protease Treatment and make protease inactivation in the enzyme liquid, or improve enzyme liquid temp to 90 and ℃ handle certain hour;
(6) washing: fabric is fully washed with hot water and cold water respectively behind the enzyme that goes out.
Described based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, be applicable to that the wool fabric of processing comprises all-wool gabardine, serge, valetin worsted fabric and drap-de-berry kind.
Described based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, the biology enzyme of application is selected different types of at and protease for use.
Described based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, in at and Protease Treatment, adopt adding polyoxyethylene-type non-ionic surface active agent or anion surfactant to make wetting and penetrating agent, or do not add any wetting and penetrating agent.
Beneficial effect of the present invention: the present invention relates to based on weak oxide and the non-single protease method of the pretreated Wool-fabric protease anti-felting method of at, also be different from existing oxidation processes and protease process combined, but adopted weak oxide and at preliminary treatment combination, carry out the three-steps process that the protease decrement combines again.With only compare through the sample of oxidation pre-treatment and Protease Treatment, have characteristics preferably with the wool fabric of this law processing, under the situation that does not add any surfactant, the wetting time of wool fabric obviously shortens after the enzyme decrement, contact angle reduces.Under close reduction rate condition, the wool fibre damage is lower than hydrogen peroxide and protease group technology treatment samples, and the felting rate is lower, and dyeability is improved obviously.
The specific embodiment
Embodiment 1
Fabric variety: all-wool gabardine.
(1) extraction preliminary treatment: wool fabric places chloroform: (87: 13, v/v) in the organic solvent solution, reflux extraction was 4 hours under 55 ℃ of conditions, removes the cloth cover residual impurity with ethanol and hot water wash respectively again for methyl alcohol.
(2) weak oxide preliminary treatment: handle and bathe: the solution of 30% hydrogen peroxide 2g/L, surfactant 0g/L, 50 ℃ of temperature, pH8.0,0.5 hour processing time.
(3) at is handled: the solution of at 5.0% owf, surfactant 0g/L, 60 ℃ of temperature, pH8.0,4 hours processing times.
(4) Protease Treatment: protease 2% owf, 55 ℃ of temperature, pH8.5,1 hour processing time.
(5) go out enzyme and washing.
Sample 1: only pass through weak oxide and Protease Treatment;
Sample 2: through weak oxide, at preliminary treatment and protease three steps processing.
After above-mentioned PROCESS FOR TREATMENT, the reduction rate of sample 1 is 4.8%, and wetting time is 15min, and the felting rate is 4.6%; The reduction rate of sample 2 is 5.3%, and wetting time is 1.1min, and the felting rate is 3.0%.
Embodiment 2
Fabric variety: all woolen woman clothing.
(1) extraction preliminary treatment: wool fabric places carbon tetrachloride: (87: 13, v/v) in the organic solvent solution, reflux extraction was 4 hours under 55 ℃ of conditions, removes the cloth cover residual impurity with ethanol and hot water wash respectively again for methyl alcohol.
(2) weak oxide is handled: handle and bathe: the solution of 30% hydrogen peroxide 1g/L, surfactant 0g/L, 50 ℃ of temperature, pH8.0,0.5 hour processing time.
(3) at is handled: the solution of at 2.0% owf, surfactant 1g/L, 60 ℃ of temperature, pH8.0,4 hours processing times.
(4) Protease Treatment: protease 1% owf, 55 ℃ of temperature, pH8.5,1 hour processing time.
(5) go out enzyme and washing.
Sample 1: bathe processing through at and protease two;
Sample 2: through weak oxide, at preliminary treatment and protease three steps processing.
After above-mentioned PROCESS FOR TREATMENT, the reduction rate of sample 1 is 4.2%, and wetting time is 5.5min, and the felting rate is 5.1%; The reduction rate of sample 2 is 4.8%, and wetting time is 2.5min, and the felting rate is 3.4%.
Claims (4)
1. one kind based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, it is characterized in that the all-wool grey fabric behind the abstraction impurity removal is adopted hydrogen peroxide, at solution-treated successively, carries out the protease post processing processing of wool fabric again;
(1) extraction preliminary treatment: wool fabric places chloroform-methanol or carbon tetrachloride-methanol solvate, reflux extraction 2-24 hour, removes the cloth cover residual impurity with ethanol or methyl alcohol and hot water wash successively again;
(2) weak oxide preliminary treatment: the impregnation process in hydrogenperoxide steam generator of the wool fabric after the extraction, handle the abundant washing of back fabric;
Weak oxide pretreating process condition: handle and bathe to containing the solution of mass concentration 30% hydrogen peroxide 1～5g/L, wetting and penetrating agent 0～20g/L, pH 7.0～9.0, and temperature 40-60 ℃, processing time 0.25～1h;
(3) at is handled: the pretreated wool fabric of weak oxide impregnation process at solution, handle the abundant washing of back fabric;
The at treatment process condition: handle the solution of bathing at mass concentration 0.5%～5.0%, wetting and penetrating agent 0～20g/L, pH 7.0～9.0,30～60 ℃ of temperature, processing time 1～6h;
(4) Protease Treatment: the wool fabric impregnation process in protein enzyme solution after at is handled;
The Protease Treatment process conditions: handle the solution of bathing to protease mass concentration 0.2%～2.0%, wetting and penetrating agent 0～20g/L, pH 7.0～9.0,30～60 ℃ of temperature, processing time 0.5～2h;
(5) enzyme that goes out: add 0.5～5.0mol/L trichloroacetic acid in the solution after Protease Treatment and make protease inactivation in the enzyme liquid, or improve enzyme liquid temp to 90 and ℃ handle certain hour;
(6) washing: fabric is fully washed with hot water and cold water respectively behind the enzyme that goes out.
2. according to claim 1 based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, it is characterized in that the wool fabric that is applicable to processing comprises all-wool gabardine, serge, valetin worsted fabric and drap-de-berry kind.
3. according to claim 1 based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, it is characterized in that the biology enzyme of using selects different types of at and protease for use.
4. according to claim 1 based on weak oxide and the pretreated Wool-fabric protease anti-felting method of at, it is characterized in that at and the Protease Treatment, adopt adding polyoxyethylene-type non-ionic surface active agent or anion surfactant to make wetting and penetrating agent, or do not add any wetting and penetrating agent.
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| CN2009100315528A CN101565902B (en) | 2009-04-22 | 2009-04-22 | Wool-fabric protease anti-felting method based on weak oxidation and cutinase pretreatment |
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| CN2009100315528A CN101565902B (en) | 2009-04-22 | 2009-04-22 | Wool-fabric protease anti-felting method based on weak oxidation and cutinase pretreatment |
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| CN101565902B true CN101565902B (en) | 2010-12-29 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI123867B (en) | 2011-04-06 | 2013-11-29 | Teknologian Tutkimuskeskus Vtt | New cutinases, production and use thereof |
| CN102965955A (en) * | 2012-10-19 | 2013-03-13 | 江南大学 | Cutinase, keratinase and protease one-bath process anti-felting technology |
| CN102965956A (en) * | 2012-10-19 | 2013-03-13 | 江南大学 | Wool worsted fabric compound enzyme padding-steaming stacking anti-felting finishing technology |
| CN102965958A (en) * | 2012-10-31 | 2013-03-13 | 江南大学 | Wool product two-bath process anti-felting treatment technology based on composite bio-enzyme |
| CN102965960B (en) * | 2012-11-21 | 2014-12-17 | 山东来利来毛纺有限公司 | Shrink-proof technique of chemical fiber |
| CZ304860B6 (en) * | 2013-06-03 | 2014-12-10 | Technická univerzita v Liberci | Method of increasing felting property of animal fibers, especially of wool or hair |
| CN104452271B (en) * | 2014-11-28 | 2017-01-11 | 上海嘉麟杰纺织品股份有限公司 | Method for preparing quick-dry polyester-wool interweaved fabric |
| CN105544198B (en) * | 2016-01-25 | 2018-05-15 | 东莞市佳乾新材料科技有限公司 | A kind of antibacterial felt-proofing finishing method of wool fabric |
| CN107059414A (en) * | 2017-05-25 | 2017-08-18 | 苏州凯邦生物技术有限公司 | A kind of Wool fabric anti-felting biologic enzyme treatment method |
| CN107858835A (en) * | 2017-12-08 | 2018-03-30 | 常熟市沪联印染有限公司 | A kind of wool fabric dyeing pre-treating technology |
| CN108794614A (en) * | 2018-06-21 | 2018-11-13 | 澳洋集团有限公司 | The method for extracting wool keratin from waste wool |
| CN108589345B (en) * | 2018-07-30 | 2021-09-21 | 嘉兴学院 | Method for manufacturing graphene wool product |
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Assignee: Jiangsu Sunshine Co., Ltd. Assignor: Jiangnan University Contract record no.: 2011320001077 Denomination of invention: Wool-fabric protease anti-felting method based on weak oxidation and cutinase pretreatment Granted publication date: 20101229 License type: Exclusive License Open date: 20091028 Record date: 20110801 |
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