CN102517647A - Method for chemically degumming jute fiber by using biological enzyme - Google Patents
Method for chemically degumming jute fiber by using biological enzyme Download PDFInfo
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- CN102517647A CN102517647A CN2011103820719A CN201110382071A CN102517647A CN 102517647 A CN102517647 A CN 102517647A CN 2011103820719 A CN2011103820719 A CN 2011103820719A CN 201110382071 A CN201110382071 A CN 201110382071A CN 102517647 A CN102517647 A CN 102517647A
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- jute
- raw ramie
- biology enzyme
- aqueous solution
- tossa
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Abstract
The invention discloses a method for chemically degumming a jute fiber by using a biological enzyme. The method comprises the following steps of: determining the weight of original jute; preparing aqueous solution of biological enzyme, mixing pectase with the weight being 0.5 to 5 percent of that of the original jute and water with the weight being 12 to 35 times that of the original jute to obtain the aqueous solution of pectase, and adjusting the pH to be 7.5 to 9.5 and the temperature to be 50 to 70 DEG C; soaking the original jute in the aqueous solution of biological enzyme; and performing chemical degumming treatment on the original jute; performing enzyme deactivation on the calcutta hemp which is treated by the aqueous solution of biological enzyme; and taking out the calcutta hemp which is degummed and drying the calcutta hemp.
Description
Technical field
The present invention relates to a kind of jute degumming method, particularly relate to a kind of biology enzyme chemical Degumming method of tossa.
Background technology
Because flax fibre has preferably sucting wet air permeability, low static behaviour and good antibacterial characteristics, hemp product more and more receives people's favor, but because flax, ramie price are higher, make hemp product use and be restricted.Jute is the second-biggest-in-the-world cellulose fibre that is only second to cotton, and is cheap, compares with flax, ramie to have better hygroscopicity and drapability, and antibacterial ability is only second to hemp, has huge using value and potentiality to be exploited.But because the content of lignin higher (can reach 10-13%) in the jute than high several times of flax, adopts conventional Degumming method that tossa is come unstuck, removes the lignin weak effect, so restricted the application of jute in textiles greatly.Chinese patent document CN1232691C discloses the method that a kind of applying biological enzyme comes unstuck to jute; To the tossa processing of coming unstuck, the tossa warp of gained and other fiber are like cotton, chemical fibre blending or interweave and can satisfy the requirement of garment material basically with the biology enzyme of pectase and laccase for this method.But above-mentioned patent documentation disclosed method is desirable not enough to the removal of lignin impurity in the tossa; Clearance is merely about 76%; The content of lignin is still higher in the tossa of gained, need with other fiber like cotton, chemical fibre blending or interweave, if the fabric that adopts the true yellow flax fibre to weave out; Feel is bad, weak effect.
Summary of the invention
Goal of the invention: in order to solve the problems of the prior art, the invention provides the method that a kind of applying biological enzyme comes unstuck to jute, this method can effectively be removed pectin and the lignin impurity in the tossa.
Technical scheme: to achieve these goals, the biology enzyme chemical Degumming method of a kind of tossa of the present invention, this method may further comprise the steps:
(A) confirm the weight of single treatment jute raw ramie;
(B) the configuration biology enzyme aqueous solution: 0.5～8% the pectase of getting jute raw ramie weight is mixed into the pectase aqueous solution with the water of 15～45 times of jute raw ramie weight, and adjusting pH value is 7.5～9.5, and temperature is 50～70 ℃;
(C) the jute raw ramie impregnated in kept in the pectase aqueous solution 20～120 minutes;
(D) the jute raw ramie being carried out chemical Degumming handles: get 5～25% the NaOH of jute raw ramie weight and the water of 15～35 times of jute raw ramie weight and be mixed into sodium hydroxide solution; Regulating temperature is 80～100 ℃; To be immersed in the sodium hydroxide solution through the jute raw ramie that the biology enzyme aqueous solution was handled, kept 20～150 minutes;
(E) jute after handling through the biology enzyme aqueous solution being carried out enzyme deactivation handles;
The jute of (F) taking out after coming unstuck is dried.
In sodium hydroxide solution, can add 1～6% bleeding agent of jute raw ramie weight in the step described in the present invention (D); Said bleeding agent is chosen as PST or JFC.
It is right to be included in the step described in the present invention (C) before impregnated in the jute raw ramie in the biology enzyme aqueous solution, and the jute raw ramie is carried out preliminary treatment.
Step described in the present invention (D) is carried out the synergy processed steps of banking up before; Said synergy time of handling of banking up is 10～15 hours.
Enzyme deactivation in the step described in the present invention (E) is treated to the high temperature washing or regulates the pH value and carry out enzyme deactivation processing, perhaps both combinations.The temperature of water was 80 ℃～100 ℃ when said high temperature was washed; PH value when adjusting pH value is carried out the enzyme deactivation processing is greater than 10.0 or less than 4.0.
Water-bath is adopted in preliminary treatment described in the present invention, and bath temperature is 35～75 ℃, and the time is 30～180 minutes.
Preliminary treatment described in the present invention is one or more the combination in water-bath, acid bath or the hydrogen peroxide dipping.
Use dilution heat of sulfuric acid or dilute acetic acid solution during acid bath described in the present invention, the solution concentration of dilution heat of sulfuric acid or dilute acetic acid solution is 5%～15%, and temperature is 20～30 ℃, and the time is 40～100 minutes.
Beneficial effect: the present invention has following advantage:
1, the present invention's mode of using the pectase aqueous solution to combine with chemical method is merely come unstuck to jute; The pectase aqueous solution is handled in the part pectin of removing the jute flax fibre and lignin and is made the jute internal structure loose, makes in the chemical Treatment of carrying out subsequently, and treatment fluid can get into tossa inside more easily; It is more thorough that tossa is come unstuck; Degumming rate can arrive more than 85%, can further carry out refinement to tossa simultaneously, and the tossa fineness after the inventive method is handled can reach more than 500 public; The present invention is simple to adopt a kind of pectase that jute is handled, and has simplified raw material and production technology.
2, the present invention adopts the processing of the pectase aqueous solution to carry out chemical treatment then, but not first chemical treatment biology enzyme processing then, because the strong base solution in the chemical treatment have certain damaging action to the fiber in the jute; Jute internal structure without biology enzyme is handled is tightr; If adopt chemical treatment this moment, strong base solution can cause damage to the cellulose in the jute when removing pectin and lignin; Thereby the intensity of tossa is reduced, finally cause the spinnability variation of tossa.And adopt chemical treatment earlier, and can not make the internal structure of tossa become loose, use biology enzyme to handle the effect that does not also reach further refinement tossa then.
The specific embodiment
Embodiment 1
A kind of biology enzyme chemical Degumming method of tossa, this method may further comprise the steps:
(A) confirm the weight of single treatment jute raw ramie: will be unpacked by the jute that market is buied, be one with 0.5 kilogram;
(B) the configuration biology enzyme aqueous solution: 0.5% the pectase of getting jute raw ramie weight is mixed into the pectase aqueous solution with the water of 15 times of jute raw ramie weight, and adjusting pH value is 7.5, and temperature is 50 ℃;
(C) the jute raw ramie impregnated in the pectase aqueous solution kept 20 minutes;
(D) the jute raw ramie being carried out chemical Degumming handles: get 5% the NaOH of jute raw ramie weight and the water of 15 times of jute raw ramie weight and be mixed into sodium hydroxide solution; Regulating temperature is 80 ℃; To be immersed in the sodium hydroxide solution through the jute raw ramie that the biology enzyme aqueous solution was handled, kept 20 minutes;
(E) jute after handling through the biology enzyme aqueous solution being carried out enzyme deactivation handles; Enzyme deactivation is treated to the high temperature washing and regulates the pH value and carry out the method that the enzyme deactivation processing combines, and the temperature of water is 80 ℃ during the high temperature washing; PH value when adjusting pH value is carried out the enzyme deactivation processing is adjusted to 10.5;
The jute of (F) taking out after coming unstuck is dried.
Embodiment 2
A kind of biology enzyme chemical Degumming method of tossa, this method may further comprise the steps:
(A) confirm the weight of single treatment jute raw ramie: will be unpacked by the jute that market is buied, be one with 1 kilogram;
(B) the configuration biology enzyme aqueous solution: 8% the pectase of getting jute raw ramie weight is mixed into the pectase aqueous solution with the water of 40 times of jute raw ramie weight, and adjusting pH value is 9.5, and temperature is 70 ℃;
(C) the jute raw ramie is carried out preliminary treatment, acid bath is adopted in preliminary treatment, uses dilution heat of sulfuric acid, and the solution concentration of dilution heat of sulfuric acid is 15%, and temperature is 30 ℃, and the time is 40 minutes; The jute raw ramie impregnated in the pectase aqueous solution kept 120 minutes;
(D) the jute raw ramie being carried out chemical Degumming handles: get 25% the NaOH of jute raw ramie weight and the water of 35 times of jute raw ramie weight and be mixed into sodium hydroxide solution; Regulating temperature is 100 ℃; To be immersed in the sodium hydroxide solution through the jute raw ramie that the biology enzyme aqueous solution was handled, kept 150 minutes;
(E) jute after handling through the biology enzyme aqueous solution being carried out enzyme deactivation handles; Enzyme deactivation is treated to the high temperature washing, and the temperature of water is 90 ℃ during the high temperature washing;
The jute of (F) taking out after coming unstuck is dried.
Embodiment 3
A kind of biology enzyme chemical Degumming method of tossa, this method may further comprise the steps:
(A) confirm the weight of single treatment jute raw ramie: will be unpacked by the jute that market is buied, be one with 0.5 kilogram;
(B) the configuration biology enzyme aqueous solution: 3% the pectase of getting jute raw ramie weight is mixed into the pectase aqueous solution with the water of 30 times of jute raw ramie weight, and adjusting pH value is 9.0, and temperature is 60 ℃;
(C) the jute raw ramie impregnated in the pectase aqueous solution kept 100 minutes;
(D) the jute raw ramie being carried out chemical Degumming handles: get 20% the NaOH of jute raw ramie weight and the water of 25 times of jute raw ramie weight and be mixed into sodium hydroxide solution; Regulating temperature is 82 ℃; To be immersed in the sodium hydroxide solution through the jute raw ramie that the biology enzyme aqueous solution was handled, kept 50 minutes; In sodium hydroxide solution, add 1% bleeding agent of jute raw ramie weight, said bleeding agent is PST;
(E) jute after handling through the biology enzyme aqueous solution being carried out enzyme deactivation handles; Enzyme deactivation is handled through regulating the pH value and is carried out the enzyme deactivation processing, and pH value is 3.5;
The jute of (F) taking out after coming unstuck is dried.
Embodiment 4
A kind of biology enzyme chemical Degumming method of tossa, this method may further comprise the steps:
(A) confirm the weight of single treatment jute raw ramie: will be unpacked by the jute that market is buied, 0.5 kilogram is one;
(B) the configuration biology enzyme aqueous solution: 5.2% the pectase of getting jute raw ramie weight is mixed into the pectase aqueous solution with the water of 21 times of jute raw ramie weight, and adjusting pH value is 7.7, and temperature is 65 ℃;
(C) the jute raw ramie is carried out preliminary treatment, water-bath is adopted in preliminary treatment, and bath temperature is 35 ℃, and the time is 180 minutes, the jute raw ramie impregnated in the pectase aqueous solution kept 80 minutes;
(D) the jute raw ramie being carried out chemical Degumming handles: get 10% the NaOH of jute raw ramie weight and the water of 20 times of jute raw ramie weight and be mixed into sodium hydroxide solution; Regulating temperature is 95 ℃; To be immersed in the sodium hydroxide solution through the jute raw ramie that the biology enzyme aqueous solution was handled, kept 120 minutes;
(E) jute after handling through the biology enzyme aqueous solution being carried out enzyme deactivation handles; Said enzyme deactivation is treated to high temperature washing and regulates pH value and carry out the enzyme deactivation processing and combine; The temperature of water was 95 ℃ when said high temperature was washed; Regulate pH value 3.0;
The jute of (F) taking out after coming unstuck is dried.
Embodiment 5
A kind of biology enzyme chemical Degumming method of tossa, this method may further comprise the steps:
(A) confirm the weight of single treatment jute raw ramie: will be unpacked by the jute that market is buied, 0.5 kilogram is one;
(B) the configuration biology enzyme aqueous solution: the pectase of getting 7.5 % of jute raw ramie weight is mixed into the pectase aqueous solution with the water of 35 times of jute raw ramie weight, and adjusting pH value is 9.2, and temperature is 55 ℃;
(C) the jute raw ramie is carried out preliminary treatment, water-bath is adopted in preliminary treatment, and bath temperature is 75 ℃, and the time is the jute raw ramie to be impregnated in the pectase aqueous solution in 30 minutes to keep 80 minutes;
(D) the jute raw ramie being carried out chemical Degumming handles: get 10% the NaOH of jute raw ramie weight and the water of 20 times of jute raw ramie weight and be mixed into sodium hydroxide solution; Regulating temperature is 95 ℃; To be immersed in the sodium hydroxide solution through the jute raw ramie that the biology enzyme aqueous solution was handled, kept 120 minutes; In sodium hydroxide solution, add 6% bleeding agent of jute raw ramie weight; Said bleeding agent is chosen as JFC;
(E) jute after handling through the biology enzyme aqueous solution being carried out enzyme deactivation handles; Said enzyme deactivation is treated to high temperature washing and regulates pH value and carry out the enzyme deactivation processing and combine; The temperature of water was 100 ℃ when said high temperature was washed; Regulate pH value 11.0;
The jute of (F) taking out after coming unstuck is dried.
Embodiment 6
A kind of biology enzyme chemical Degumming method of tossa, this method may further comprise the steps:
(A) confirm the weight of single treatment jute raw ramie: will be unpacked by the jute that market is buied, 0.5 kilogram is one;
(B) the configuration biology enzyme aqueous solution: 6.7% the pectase of getting jute raw ramie weight is mixed into the pectase aqueous solution with the water of 38 times of jute raw ramie weight, and adjusting pH value is 7.0, and temperature is 60 ℃;
(C) the jute raw ramie is carried out preliminary treatment, acid bath is adopted in preliminary treatment, uses dilute acetic acid solution during said acid bath, and the solution concentration of dilute acetic acid solution is 5%, and temperature is 20 ℃, and the time is 100 minutes;
(D) the jute raw ramie being carried out chemical Degumming handles: get 22% the NaOH of jute raw ramie weight and the water of 28 times of jute raw ramie weight and be mixed into sodium hydroxide solution; Regulating temperature is 90 ℃; To be immersed in the sodium hydroxide solution through the jute raw ramie that the biology enzyme aqueous solution was handled, kept 140 minutes; In sodium hydroxide solution, add 5% bleeding agent of jute raw ramie weight; Said bleeding agent is chosen as JFC;
(E) jute after handling through the biology enzyme aqueous solution being carried out enzyme deactivation handles; Said enzyme deactivation is treated to high temperature washing and regulates pH value and carry out the enzyme deactivation processing and combine; The temperature of water was 85 ℃ when said high temperature was washed; Regulate pH value 10.5;
The jute of (F) taking out after coming unstuck is dried.
Claims (10)
1. the biology enzyme chemical Degumming method of a tossa is characterized in that, this method may further comprise the steps:
(A) confirm the weight of single treatment jute raw ramie;
(B) the configuration biology enzyme aqueous solution: 0.5～8% the pectase of getting jute raw ramie weight is mixed into the pectase aqueous solution with the water of 15～45 times of jute raw ramie weight, and adjusting pH value is 7.5～9.5, and temperature is 50～70 ℃;
(C) the jute raw ramie impregnated in kept in the pectase aqueous solution 20～120 minutes;
(D) the jute raw ramie being carried out chemical Degumming handles: get 5～25% the NaOH of jute raw ramie weight and the water of 15～35 times of jute raw ramie weight and be mixed into sodium hydroxide solution; Regulating temperature is 80～100 ℃; To be immersed in the sodium hydroxide solution through the jute raw ramie that the biology enzyme aqueous solution was handled, kept 20～150 minutes;
(E) jute after handling through the biology enzyme aqueous solution being carried out enzyme deactivation handles;
The jute of (F) taking out after coming unstuck is dried.
2. the biology enzyme chemical Degumming method of a kind of tossa according to claim 1 is characterized in that, in sodium hydroxide solution, can add 1～6% bleeding agent of jute raw ramie weight in the said step (D).
3. the biology enzyme chemical Degumming method of a kind of tossa according to claim 2 is characterized in that, said bleeding agent is PST or JFC.
4. the biology enzyme chemical Degumming method of a kind of tossa according to claim 1 is characterized in that, it is right to be included in the step (C) before impregnated in the jute raw ramie in the biology enzyme aqueous solution, and the jute raw ramie is carried out preliminary treatment.
5. the biology enzyme chemical Degumming method of a kind of tossa according to claim 1 is characterized in that, also is included in said step (D) and carries out the synergy processed steps of banking up before; Said synergy time of handling of banking up is 10～15 hours.
6. the biology enzyme chemical Degumming method of a kind of tossa according to claim 1 is characterized in that, the enzyme deactivation in the said step (E) is treated to the high temperature washing or regulates the pH value and carry out enzyme deactivation processing, perhaps both combinations.
7. the biology enzyme chemical Degumming method of a kind of tossa according to claim 6 is characterized in that, the temperature of water is 80 ℃～100 ℃ when carrying out the washing of said high temperature; PH value when adjusting pH value is carried out the enzyme deactivation processing is greater than 10.0 or less than 4.0.
8. the biology enzyme chemical Degumming method of a kind of tossa according to claim 4 is characterized in that, water-bath is adopted in said preliminary treatment, and bath temperature is 35～75 ℃, and the time is 30～180 minutes.
9. according to the biology enzyme chemical Degumming method of the said a kind of tossa of claim 4, it is characterized in that said preliminary treatment is one or more the combination in water-bath, acid bath or the hydrogen peroxide dipping.
10. the biology enzyme chemical Degumming method of a kind of tossa according to claim 9; It is characterized in that; Use dilution heat of sulfuric acid or dilute acetic acid solution during said acid bath; The solution concentration of dilution heat of sulfuric acid or dilute acetic acid solution is 5%～15%, and temperature is 20～30 ℃, and the time is 40～100 minutes.
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Cited By (5)
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| CN102828254A (en) * | 2012-08-24 | 2012-12-19 | 营口市新艺纺织有限责任公司 | Processing method of secondary hemp fibers |
| CN103526386A (en) * | 2013-01-25 | 2014-01-22 | 湖南益鑫泰麻业纺织服饰有限公司 | Blended yarn woven fabric and preparing method thereof |
| CN103850143A (en) * | 2012-12-04 | 2014-06-11 | 台元纺织股份有限公司 | Method for treating biomass material for composite material |
| CN104947199A (en) * | 2014-03-26 | 2015-09-30 | 中国科学院天津工业生物技术研究所 | Ramie degumming method |
| CN106661824A (en) * | 2014-07-31 | 2017-05-10 | 爱贝克思集团控股公司 | Method for manufacturing linen fiber for spinning, and linen fiber for spinning |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828254A (en) * | 2012-08-24 | 2012-12-19 | 营口市新艺纺织有限责任公司 | Processing method of secondary hemp fibers |
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| CN103526386A (en) * | 2013-01-25 | 2014-01-22 | 湖南益鑫泰麻业纺织服饰有限公司 | Blended yarn woven fabric and preparing method thereof |
| CN104947199A (en) * | 2014-03-26 | 2015-09-30 | 中国科学院天津工业生物技术研究所 | Ramie degumming method |
| CN106661824A (en) * | 2014-07-31 | 2017-05-10 | 爱贝克思集团控股公司 | Method for manufacturing linen fiber for spinning, and linen fiber for spinning |
| CN106661824B (en) * | 2014-07-31 | 2020-04-14 | 爱贝克思集团控股公司 | Method for producing spinning fibrilia and spinning fibrilia |
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Application publication date: 20120627 |