CN103510180A - Lyocell bamboo fiber and preparation method thereof - Google Patents
Lyocell bamboo fiber and preparation method thereof Download PDFInfo
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- CN103510180A CN103510180A CN201310425871.3A CN201310425871A CN103510180A CN 103510180 A CN103510180 A CN 103510180A CN 201310425871 A CN201310425871 A CN 201310425871A CN 103510180 A CN103510180 A CN 103510180A
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Abstract
The invention discloses a Lyocell bamboo fiber and a preparation method thereof. The method comprises the following steps of: (1) adding an enzyme complex into bamboo pulp meal for activation (the activation time lasting for 20-60 min), then adding sodium hydroxide to adjust pH to 10-12, stopping activation to obtain a paste, wherein the enzyme complex consists of the following components in parts by weight: 10-20 parts of cutinase, 10-20 parts of alkaline pectinase, 10-20 parts of 1,4-Beta-D-glucose-4-glucoside hydrolase and 100 parts of cellulase; (2) dehydrating and squeezing the paste under vacuum to control the water content of cellulose to be 30-50 wt%; (3) pre-dissolving; (4) dissolving; (5) spinning; and (6) washing, blanching, oiling, and oven-drying. The Lyocell bamboo fiber prepared through adopting the method provided by the invention has excellent dry strength and wet strength and high wet modulus, and also maintains the features of coolness, smoothness, subtle fragrance and negative ion release of bamboo fibers.
Description
Technical field
The present invention relates to a kind of bamboo fibre and preparation method thereof, relate in particular to a kind of Lyocell bamboo fibre and preparation method thereof.
Background technology
Lyocell bamboo fibre is a kind of regenerated bamboo fiber that bamboo cellulose pulp adopts Lyocell technique spinning to form as raw material of take.
The common preparation technology of Lyocell bamboo fibre is: bamboo cellulose pulp is directly dissolved in N-methylmorpholine-N-oxide aqueous solution of (being called for short NMMO), and prepares regenerated celulose fibre by wet spinning.This friendly process has the features such as abundant raw material, simple, the advanced environmental protection of production procedure, good product performance.Being expected to replace gradually with serious pollution traditional fibre cellulose fiber production technology is adhering process.
Summary of the invention
One of technical problem to be solved by this invention is to provide a kind of preparation method of Lyocell bamboo fibre.
Two of technical problem to be solved by this invention is to provide a kind of Lyocell bamboo fibre, adopts said method to be prepared from.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions:
A preparation method for Lyocell bamboo fibre, is comprised of following step:
(1) activation
Complex enzyme is joined in bamboo pulp and activated, and the activation processing time is 20-60 minute; Add again NaOH, regulate pH value at 10-12, stop activation, obtain starching congee;
(2) squeezing
By above-mentioned slurry congee vacuum dehydration squeezing, controlling cellulose moisture content is 30-50wt%;
(3) predissolve
Cellulose after above-mentioned squeezing is added to the aqueous solution that contains 50-88wt%N-methyl morpholine-N-oxide, obtain predissolve slurry;
(4) dissolve
Above-mentioned predissolve slurry is entered after dissolving machine, through heating, vacuumize, after dehydration, dissolving, homogenize, deaeration, obtain slurries;
(5) spinning
Above-mentioned slurries are carried through booster pump, entered after measuring pump, by spinnerets, spray, adopt dry-wet spinning moulding, obtain bamboo fibre;
(6) wash, bleach, oil, dry.
Preferably,
In described step (1), activation temperature is 30-50 ℃.
The degree of polymerization 500-700 of bamboo pulp described in described step (1).
Described in described step (1), the consumption of complex enzyme is the 1-3wt% of bamboo pulp amount.
Complex enzyme described in described step (1), consists of by weight following component: cutinase 10-20 part, alkaline pectase 10-20 part, Isosorbide-5-Nitrae-Β-D-Glucose-4-glucoside hydrolase 10-20 part, 100 parts of cellulases.
In predissolve slurry in described step (3), cellulose quality content is 8-12%, pH value 8-12.Vacuum in described step (4) is 1-15kpa, and temperature is 60-120 ℃.In slurries in described step (4), cellulose quality percentage composition is 11-15%.Spinning speed 40-80m/min in described step (5), spinning air gap 10-40mm, spinning blowing temperature 10-25 ℃, spinning blowing flow 100-500L/H, blowing relative humidity 50-80%, coagulating bath mass concentration 10-30%, coagulation bath temperature 5-30 ℃.
In addition, the present invention also provides a kind of Lyocell bamboo fibre, adopts said method to be prepared from.
The Lyocell bamboo fibre that adopts the present invention to prepare, not only has the various premium properties of conventional Lyocell fiber, has also kept the characteristics such as nice and cool, smooth, delicate fragrance, anion of bamboo wood, special, has excellent dry strong, by force wet and high wet modulus.
The specific embodiment
Embodiment 1:
The preparation method of Lyocell bamboo fibre:
(1) activation
Take cutinase 15 weight portions, alkaline pectase 15 weight portions, Isosorbide-5-Nitrae-Β-D-Glucose-4-glucoside hydrolase 15 weight portions and cellulase 100 weight portions, be uniformly mixed, make complex enzyme.
Complex enzyme is joined in the bamboo pulp of the degree of polymerization 600 and activate, the addition of described complex enzyme is the 2wt% of bamboo pulp consumption, and the activation processing time is 40 minutes, and activation temperature is 40 ℃; Add again NaOH, regulate pH value 11, stop activation, obtain starching congee;
(2) squeezing
By above-mentioned slurry congee vacuum dehydration squeezing, controlling cellulose moisture content is 40wt%;
(3) predissolve
Cellulose after above-mentioned squeezing is added to the aqueous solution that contains 70wt%N-methyl morpholine-N-oxide, obtain predissolve slurry; Regulating and controlling cellulose quality percentage composition in described predissolve slurry is 10wt%, pH value 10.
(4) dissolve
Above-mentioned predissolve slurry is entered after dissolving machine, through heating, vacuumize, vacuum is 10kpa, and temperature is 90 ℃, after dehydration, dissolving, homogenize, deaeration, obtains slurries, and controlling cellulose quality percentage composition in these slurries is 13%;
(5) spinning
Above-mentioned slurries are carried through booster pump, entered after measuring pump, by spinnerets, spray, adopt dry-wet spinning moulding, obtain bamboo fibre;
Wherein, spinning speed 60m/min, spinning air gap 30mm, 20 ℃ of spinning blowing temperature, spinning blowing flow 300L/H, blowing relative humidity 65%, coagulating bath mass concentration 20%, 20 ℃ of coagulation bath temperatures.
(6) wash, bleach, oil, dry.
Comparative example 1:
The preparation method of Lyocell bamboo fibre is substantially the same manner as Example 1, and unique difference is: adopt cellulase to join in bamboo pulp and activate, rather than adopt complex enzyme to activate.The addition of enzyme is identical.
Comparative example 2:
The preparation method of Lyocell bamboo fibre is substantially the same manner as Example 1, and unique difference is: adopt cutinase to join in bamboo pulp and activate, rather than adopt complex enzyme to activate.The addition of enzyme is identical.
Comparative example 3:
The preparation method of Lyocell bamboo fibre is substantially the same manner as Example 1, and unique difference is: adopt alkaline pectase to join in bamboo pulp and activate, rather than adopt complex enzyme to activate.The addition of enzyme is identical.
Comparative example 4:
The preparation method of Lyocell bamboo fibre is substantially the same manner as Example 1, and unique difference is: adopt Isosorbide-5-Nitrae-Β-D-Glucose-4-glucoside hydrolase to join in bamboo pulp and activate, rather than adopt complex enzyme to activate.The addition of enzyme is identical.
Test case 1:
Embodiment 1 and comparative example 1-4 are carried out to performance test, and concrete data see the following form.
Table 1
| ? | Dry strong, cN/dtex | Wet strong, cN/dtex | Wet modulus, cN/dtex |
| Embodiment 1 | 3.5 | 3.2 | 17.8 |
| Comparative example 1 | 3.3 | 2.9 | 16.5 |
| Comparative example 2 | 2.9 | 2.8 | 15.4 |
| Comparative example 3 | 3.2 | 2.7 | 14.8 |
| Comparative example 4 | 3.1 | 2.7 | 15.1 |
By the test data of table 1, can significantly find out: for the preparation method of Lyocell bamboo fibre, the present invention adopts the effect that complex enzyme produces to be much better than each single enzyme, has produced synergistic function.
Lyocell bamboo fibre of the present invention, both there is the moisture absorption of cellulose fibre, ventilative, easy dyeing, antistatic, easily weaving and comfortable and easy to wear, high, the on-deformable advantage of fabric fastness again with lyocell fiber, also has advantages of the natural antibacterial mildew-resistant of bamboo fibre.Preparation method's environmental protection of the present invention: residual without any harmful substance on fiber; The rounded cross section of fiber making, feel is smooth, glossiness good.Be worth especially explanation, Lyocell bamboo fibre of the present invention has excellent dry strong, wet strong and high wet modulus.
Claims (6)
1. a preparation method for Lyocell bamboo fibre, is characterized in that, following step, consists of:
(1) activation
Complex enzyme is joined in bamboo pulp and activated, and the activation processing time is 20-60 minute; Add again NaOH, regulate pH value at 10-12, stop activation, obtain starching congee;
(2) squeezing
By above-mentioned slurry congee vacuum dehydration squeezing, controlling cellulose moisture content is 30-50wt%;
(3) predissolve
Cellulose after above-mentioned squeezing is added to the aqueous solution that contains 50-88wt%N-methyl morpholine-N-oxide, obtain predissolve slurry;
(4) dissolve
Above-mentioned predissolve slurry is entered after dissolving machine, through heating, vacuumize, after dehydration, dissolving, homogenize, deaeration, obtain slurries;
(5) spinning
Above-mentioned slurries are carried through booster pump, entered after measuring pump, by spinnerets, spray, adopt dry-wet spinning moulding, obtain bamboo fibre;
(6) wash, bleach, oil, dry.
2. the preparation method of Lyocell bamboo fibre as claimed in claim 1, is characterized in that: in described step (1), activation temperature is 30-50 ℃.
3. the preparation method of Lyocell bamboo fibre as claimed in claim 1, is characterized in that: the degree of polymerization 500-700 of bamboo pulp described in described step (1).
4. the preparation method of Lyocell bamboo fibre as claimed in claim 1, is characterized in that: described in described step (1), the consumption of complex enzyme is the 1-3wt% of bamboo pulp amount.
5. the preparation method of Lyocell bamboo fibre as claimed in claim 1, it is characterized in that: complex enzyme described in described step (1), by following component, formed by weight: cutinase 10-20 part, alkaline pectase 10-20 part, 1,4-Β-D-Glucose-4-glucoside hydrolase 10-20 part, 100 parts of cellulases.
6. a Lyocell bamboo fibre, is characterized in that, adopts the method described in any one in claim 1-5 to be prepared from.
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| CN201310425871.3A CN103510180A (en) | 2013-09-17 | 2013-09-17 | Lyocell bamboo fiber and preparation method thereof |
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| CN201310425871.3A CN103510180A (en) | 2013-09-17 | 2013-09-17 | Lyocell bamboo fiber and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109234828A (en) * | 2018-08-09 | 2019-01-18 | 上海德福伦化纤有限公司 | A kind of solvent method high-wet-modulus cotton fiber and preparation method thereof |
| CN109355731A (en) * | 2018-08-09 | 2019-02-19 | 上海德福伦化纤有限公司 | A kind of solvent method high-wet-modulus bamboo, wood, cotton composite fibre and preparation method thereof |
| CN110886026A (en) * | 2019-12-17 | 2020-03-17 | 上海里奥纤维企业发展有限公司 | Temperature-adjusting fiber and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109234828A (en) * | 2018-08-09 | 2019-01-18 | 上海德福伦化纤有限公司 | A kind of solvent method high-wet-modulus cotton fiber and preparation method thereof |
| CN109355731A (en) * | 2018-08-09 | 2019-02-19 | 上海德福伦化纤有限公司 | A kind of solvent method high-wet-modulus bamboo, wood, cotton composite fibre and preparation method thereof |
| CN110886026A (en) * | 2019-12-17 | 2020-03-17 | 上海里奥纤维企业发展有限公司 | Temperature-adjusting fiber and preparation method thereof |
| CN110886026B (en) * | 2019-12-17 | 2022-07-05 | 上海里奥纤维企业发展有限公司 | Temperature-adjusting fiber and preparation method thereof |
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Application publication date: 20140115 |