CN104746348A - A cotton yarn scouring method by applying pectinase and neutral cellulase - Google Patents
A cotton yarn scouring method by applying pectinase and neutral cellulase Download PDFInfo
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- CN104746348A CN104746348A CN201310737259.XA CN201310737259A CN104746348A CN 104746348 A CN104746348 A CN 104746348A CN 201310737259 A CN201310737259 A CN 201310737259A CN 104746348 A CN104746348 A CN 104746348A
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Abstract
The invention relates to a cotton yarn scouring method by applying pectinase and neutral cellulase, and belongs to the technical field of cotton yarn dyeing and finishing pretreatment. The pectinase penetrates a cuticular and primary cell walls through micro holes and cracks on the surface of the cotton fiber, forms a composite with pectin, and reacts with the composite to allow the pectin to be converted into a water soluble product, so that the pectin is dissolved from the fiber. Along with dissolution of the pectin, a wax material structure adnascent with the pectin is loosened, is easily brought into contact with an added surfactant, emulsified and removed. The neutral cellulase can act on cellulose in the primary cell walls, and promote removal of the pectin, cotton wax, and other impurities by degrading the cellulose. Enzymes are mild in acting conditions, high in specificity and low in impurity removal rate and have selectivity, so that enzyme scouring can replace traditional scouring for cotton yarns with low requirements on pretreatment.
Description
Technical field
The invention belongs to cotton dyeing and finishing pretreatment technology field, relate to and a kind ofly apply pectase and neutral cellulase carries out the concise method of cotton.
Background technology
Except containing except the cellulose of 90%-94% in natural cotton fiber, the natural impurity (also claiming cellulose commensal or accompaniment) also containing 6%-10%, they are pectin substance, nitrogen substance, waxy substance, ash content, pigment, cotton seed hulls etc. respectively.Cotton fiber is made up of cutricular plate (very thin outermost layer), primary cell wall, secondary cell wall (fibrous body part) and the cell of hollow, and the cutricular plate in cotton fiber forms the adventitia of cotton fiber together with primary cell wall.A lot of data is pointed out, main containing pectin and waxy substance in cutricular plate, in primary cell wall, the content of pectin and waxy substance is also very high.The effect of pectin as the glue, by waxy substance bonding in the fibre.
1. the chief component of pectin substance is the derivative of pectic acid, the chemical composition of pectic acid is that α-D half poly lactose aldehydic acid is each other with 1, the linear macromolecule that 4-glycosidic bond is connected, most of pectic acid is had to be exist, so its hydrophily is lower than cellulose with the form of methyl esters or Ca salt, Mg salt in pectin substance.Carboxyl in pectin also likely combines with ester bond with the hydroxyl in cellulose macromolecule, encloses the hydroxyl in cellulose, and the wettability of cotton fiber is affected.
Pectase is the class of enzymes of decompose pectin, and it mainly comprises following Four types: pectinesterase, polygalacturonase, pectin lyase and protopectinase.Usually, the pectase of use is the general name of a multicomponent enzyme system.Insoluble protopectin can be hydrolyzed to water soluble pectin (methyl esters of polygalacturonase) by the protopectinase in pectase, and cuts off the chemical bond between polymethoxy galacturonic acid and arabinose; Pectinesterase can methoxyl group in decomposition water dissolubility pectin molecule and the ester bond between galacturonic acid, forms lactobionic acid and formaldehyde alcohol; Polygalacturonic enzyme, also known as pectin galacturonic acid enzyme, is commonly called as pectase, then can cut off the α-Isosorbide-5-Nitrae glycosidic bond of pectic acid, forms free galacturonic.Cellulase can be divided into acidic cellulase, neutral cellulase and alkali cellulose enzyme by action condition, can weaken at different conditions, degraded cellulose.
There is many micropores and crack in cotton fiber surface, enzyme can be penetrated in cutricular plate and primary cell wall by these micropores and crack.Pectase first forms a compound with pectin, then with this compound, above-mentioned reaction occurs again, makes pectin become water miscible product and be dissolved down from fiber.Pectin and the waxy substance of fiber surface are grown nonparasitically upon another plant mutually, and pectin has waxy substance adhesion function in the fibre.Along with pectin is dissolved down from the cutricular plate and primary cell wall of fiber surface, residual waxy substance structure occurs to loosen, and is easy to and the surfactant fluid added and emulsified removal.Neutral cellulase can act on cellulose in primary cell wall, is promoted the removal of the impurity such as pectin, cotton wax by degraded cellulose.
Traditional cotton is concise is under the acting in conjunction of high temperature and caustic soda, removes the non-cellulosic material such as pectin, wax and the protein on cotton fiber, makes cottonly to obtain good water imbibition, is convenient to bleaching and the dyeing and printing process in rear road.But employ a large amount of alkali and surfactant in alkali refinery practice, need again after process to clean with a large amount of water, therefore, processed cotton fiber weight-loss ratio is large, strength damage is serious, the middle COD value that disposes waste liquid is very high, and process water consumption is large, energy consumption is high, length consuming time, is a kind of processing technology of non-green.And the more biology enzyme of research in recent years is concise has multiple advantage:
1, the treatment effect of General Promotion cotton products
(1) do not damage fiber, fabric weightlessness reduces, and can improve cotton quality;
(2) improve dyeability, level-dyeing property raising, tinctorial yield are risen, and dyeing defect rate declines to a great extent;
(3) fabrics feel soft, plentiful, cloth cover is glossy, clean mark;
(4) safety and reliability is had more to special the concise of responsive type fiber, as natural color cotton, cotton/hair, cotton/silk, cotton/fiber crops etc.
2, to environment, operating personnel and equipment harmless (1) low energy consumption, low water consumption, reduce TDS, COD, BOD index in waste water, reduce environmental pollution;
(2) operating environment safety;
(3) lower equipment damage.
3, shorten process time, reduce integrated cost
(1) merge enzyme desizing operation, can the process time be shortened, enhance productivity;
(2) dye-uptake improves, and saves dyestuff;
(3) alleviate treatment pressure of sewage, reduce waste water control expense.
Summary of the invention
The present invention is intended to study and a kind ofly applies pectase and neutral cellulase carries out the concise method of cotton.Use the present invention can substitute traditional chemical refining processing, reduce the negative effect to cotton and environment, improve the property indices of cotton, especially the index such as wettability, destarch effect and whiteness can move back with traditional alkali boil-oxygen bleaching process is suitable.
The present invention a kind ofly applies pectase and neutral cellulase carries out the concise method of cotton, pectase penetrates in cutricular plate and primary cell wall by the micropore on cotton fiber surface and crack, compound is formed with pectin, then react with compound again, make pectin become water-soluble products and be dissolved down from fiber; Along with the dissolving of pectin, the waxy substance structure of mutually growing nonparasitically upon another plant with pectin occurs to loosen, and is easy to and the surfactant fluid added and emulsified removal.Neutral cellulase acts on cellulosic component in primary cell wall, is promoted the removal of the impurity such as pectin, cotton wax by degraded cellulose.
Main contents of the present invention are:
It is concise that employing pectase and neutral cellulase carry out cotton, and concrete refining process is: pectase consumption 0.1-0.4g/l, neutral cellulase consumption 0.05-0.2g/l, temperature 50-65 DEG C, pH7-8, processing time 40-55min.
The capillary effect of the capillary effect of the cotton after described method is concise and whiteness and the concise rear cotton of alkali is close with whiteness; Meanwhile, because enzymatic scouring action condition is gentleer, after enzymatic scouring, cotton strength loss rate rear cotton strength loss rate concise compared with alkali is low, is conducive to protecting fiber.
Described cotton is cheese, reeled yarn.
Beneficial effect:
(1) the present invention concise after cotton reactive dyeing, obtain color depth and be greater than 20, aberration △ E is less than 1, and soaping fastness 3-4 level is close with traditional alkali scouring result;
(2) method safety environmental protection of the present invention, simple to operate, and controllability is strong, compares conventional alkali treatment reaction condition gentle, environmentally friendly, has a good application prospect.
Detailed description of the invention
Embodiment 1
Textile cheese refining process condition is as shown in table 1, and scouring result is in table 2.
Table 1 cheese refining process condition
| Project | Alkali is concise | Enzymatic scouring |
| Pectase (g/l) | — | 0.1 |
| Neutral cellulase (g/l) | — | 0.05 |
| NaOH(g/l) | 5 | — |
| Penetrating agent JFC (g/l) | 0.5 | 0.5 |
| Temperature (DEG C) | 95 | 60 |
| Solution ph | — | 10 |
| Bath raio | 1：30 | 1：30 |
The effectiveness comparison of the different cheese method for refining of table 2
| Project | Alkali is concise | Enzymatic scouring |
| Capillary effect Zhi/㎝ | 8.5 | 8.0 |
| Weight-loss ratio/% | 6.71 | 3.78 |
| Whiteness/% | 86.56 | 85.05 |
| Strength loss rate/% | 8.96 | 5.44 |
Can find out, water imbibition (capillary effect value), the whiteness value of the rear cotton concise compared with alkali of the cotton after enzymatic scouring are lower slightly, but weight-loss ratio is low, and strength loss is also low.Because the concise action condition of alkali is relatively more violent, also can be higher to the damage of cotton fiber, and enzymatic scouring action condition is gentleer, relatively little to cotton fiber damage.So cotton strength loss rate rear cotton strength loss rate concise compared with alkali is low after enzymatic scouring, be conducive to protecting fiber.
Embodiment 2
Textile reeled yarn refining process condition is as shown in table 3, and scouring result is in table 4.
Table 3 reeled yarn refining process condition
| Project | Alkali is concise | Enzymatic scouring |
| Pectase (g/l) | — | 0.375 |
| Neutral cellulase (g/l) | — | 0.1 |
| NaOH(g/l) | 18.75 | — |
| Penetrating agent JFC (g/l) | 1.875 | 1.875 |
| Temperature (DEG C) | 95 | 60 |
| Solution ph | — | 10 |
| Bath raio | 1：8 | 1：8 |
The effectiveness comparison of the different reeled yarn method for refining of table 4
| Project | Alkali is concise | Enzymatic scouring |
| Capillary effect Zhi/㎝ | 8.7 | 8.5 |
| Weight-loss ratio/% | 8.43 | 5.58 |
| Whiteness/% | 87.21 | 86.13 |
| Strength loss rate/% | 8.77 | 5.09 |
From table 4, the concise rear cotton whiteness of pectase, capillary effect and traditional alkali scouring result are close, weight-loss ratio and strength loss concise compared with alkali little, therefore alternative traditional alkali is concise.
Claims (6)
1. apply pectase and neutral cellulase carries out the concise method of cotton for one kind, it is characterized in that pectase penetrates in cutricular plate and primary cell wall by the micropore on cotton fiber surface and crack, compound is formed with pectin, then react with compound again, make pectin become water-soluble products and be dissolved down from fiber; Along with the dissolving of pectin, the waxy substance structure of mutually growing nonparasitically upon another plant with pectin occurs to loosen, and is easy to and the surfactant fluid added and emulsified removal.
2. neutral cellulase can act on cellulose in primary cell wall, is promoted the removal of the impurity such as pectin, cotton wax by degraded cellulose.
3. according to claim 1ly a kind ofly apply pectase and neutral cellulase carries out the concise method of cotton; it is characterized in that by the capillary effect of the cotton after pectase and neutral cellulase process close with whiteness with the capillary effect of whiteness and concise, the rear cotton of alkali; after enzymatic scouring, cotton strength loss rate rear cotton strength loss rate concise compared with alkali is low, is conducive to protecting fiber.
4. according to claim 1ly a kind ofly apply pectase and neutral cellulase carries out the concise method of cotton, it is characterized in that refining process is: temperature 50-65 DEG C, pectase consumption 0.1-0.4g/l, neutral cellulase consumption 0.05-0.2g/l, pH7-8, time 40-55min.
5. according to claim 1ly a kind ofly apply pectase and neutral cellulase carries out the concise method of cotton, it is characterized in that described cotton is cheese, reeled yarn, beamed yarn and ball yarn.
6. according to claim 1ly a kind ofly apply pectase and neutral cellulase carries out the concise method of cotton, it is characterized in that the cotton reactive dyeing after enzymatic scouring, obtain color depth and be greater than 20, aberration △ E is less than 1, soaping fastness 3-4 level, close with traditional alkali scouring result.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369636A (en) * | 2015-12-18 | 2016-03-02 | 常熟市爱尚纺织科技有限公司 | Processing method of flannel fabric |
| CN107687098A (en) * | 2017-08-02 | 2018-02-13 | 无锡嘉加科技有限公司 | A kind of preparation method of the concise polishing complex enzyme of neutrality |
| CN111058290A (en) * | 2020-01-17 | 2020-04-24 | 青岛大学 | Method for improving coloring depth of cotton fabric pigment |
| CN111058309A (en) * | 2020-01-17 | 2020-04-24 | 青岛大学 | Method for improving dip dyeing uniformity of cotton fabric pigment |
| CN111557487A (en) * | 2020-05-08 | 2020-08-21 | 江苏斑竹科技有限公司 | Anti-mosquito cotton sock based on plant essential oil and preparation method thereof |
| CN115012226A (en) * | 2022-07-03 | 2022-09-06 | 东莞市鸿裕纺织科技有限公司 | Refining method of cotton fibers |
-
2013
- 2013-12-30 CN CN201310737259.XA patent/CN104746348A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369636A (en) * | 2015-12-18 | 2016-03-02 | 常熟市爱尚纺织科技有限公司 | Processing method of flannel fabric |
| CN107687098A (en) * | 2017-08-02 | 2018-02-13 | 无锡嘉加科技有限公司 | A kind of preparation method of the concise polishing complex enzyme of neutrality |
| CN111058290A (en) * | 2020-01-17 | 2020-04-24 | 青岛大学 | Method for improving coloring depth of cotton fabric pigment |
| CN111058309A (en) * | 2020-01-17 | 2020-04-24 | 青岛大学 | Method for improving dip dyeing uniformity of cotton fabric pigment |
| CN111557487A (en) * | 2020-05-08 | 2020-08-21 | 江苏斑竹科技有限公司 | Anti-mosquito cotton sock based on plant essential oil and preparation method thereof |
| CN115012226A (en) * | 2022-07-03 | 2022-09-06 | 东莞市鸿裕纺织科技有限公司 | Refining method of cotton fibers |
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Application publication date: 20150701 |