CN101225553A - Method for dissolving and processing ceiba bamboo hemp fibre by employing ionic liquid - Google Patents
Method for dissolving and processing ceiba bamboo hemp fibre by employing ionic liquid Download PDFInfo
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- CN101225553A CN101225553A CNA2008100335141A CN200810033514A CN101225553A CN 101225553 A CN101225553 A CN 101225553A CN A2008100335141 A CNA2008100335141 A CN A2008100335141A CN 200810033514 A CN200810033514 A CN 200810033514A CN 101225553 A CN101225553 A CN 101225553A
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Abstract
The invention relates to a method of dissolving and processing wood, cotton, bamboo and hemp fiber by using ion liquid, comprising a first step: uniformly mixing the crushed wood, cotton, bamboo, hemp and the ion liquid, dissolving and deaerating the mixture for 1 to 120 hours at 35 to 160 DEG C to form a homogeneous and stable spinning solution, wherein, the weight proportion of the wood, cotton, bamboo, or hemp is 1% to 96%; a second step: spinning and bath curing after filter and deaerating; a third step: pulling, rinsing, and bleaching, then oiling and drying to obtain a composite fiber. The dissolving and processing method is characterized in that the productivity of the ion liquid is high, the ion liquid is easy to recovery and meet the requirement of green production, the composite fiber has good mechanical strength and mechanical property, fabric made by the composite fiber has good hygroscopicity, nice air permeability, soft hand feeling, good drapability, easy colorizing, cool feeling and antibacterial performance, and also can be used for medical and sanitary material.
Description
Technical field
The invention belongs to the fiber production field, particularly relate to the method that adopts ion liquid dissolving and processing ceiba bamboo hemp fibre.
Background technology
Cellulose storage level maximum not only in all substances of occurring in nature, and huge amount of recovery is arranged.Have only few cellulose to be made into fiber at present.Be used to make the cellulose amount of fiber and film, 4% of the cellulose output of producing no more than world industry.Along with the mankind to the deepening continuously and the worsening shortages of resources such as oil, coal, natural gas of nature understanding, cellulosic utilization also will enlarge gradually.Cellulose fibre is because raw cellulose can be changed into steam and carbon dioxide by biological decomposition or safe combustion, and the destruction environmental problem that is caused by discarded object is few.Therefore it is very necessary developing cellulose fibre.
Make the semi-products of regenerated celulose fibre---the raw material source of pulp is also quite extensive, from the needlebush of high-quality and cotton linter to leaf wood, fast growing wood, bamboo and various herbaceous plant (as bagasse, reed, waste of flax etc.).Because the bamboo growth cycle is short, the felling of can becoming a useful person in general 3～5 years, the output height, low to the growing environment requirement, make cost lower.And not influencing the ecological balance, therefore is following splendid textile raw material.And the cross section of bamboo has been covered with irregular space, is a kind of super doughnut, can have splendid ventilative, saturating wet capillary effect at transient absorption and transpiring moisture; Therefore, bamboo fibre inhale have that moisture pick-up properties is good, gas permeability is strong, soft, fabric fall good, colouring is easy, wear series of advantages such as nice and cool.Simultaneously, bamboo fibre also has bacteriostasis property, does not reduce because of external force such as washing, frictions when wearing or disappears, and therefore develops bamboo fibre and seems and be necessary very much to have the sustainable development function.
China's crudefiber crop aboundresources, great variety of goods has the almost all main crudefiber crops in the world.The main bast fiber crop of cultivation has ramie, flax, hemp, bluish dogbane (former title mestha), jute, piemarker (former title piemarker), hemp and sisal hemp etc.The fiber crops material has natural antibacterial, mildew-resistant character. and agricultural chemicals and pesticide use and lack in growth course, and average product is very high.After natural fiber crops process dissolving regeneration, the spinnability of the regenerated hemp fibre that obtains, weavability, stainability are good, soft, have characteristics such as hygroscopicity, gas permeability, powerful height, the mechanical property of regenerated hemp fibre and wear performance and obviously be better than natural flax fibre.In the production process of regenerated hemp fibre, kept antibacterial, mildew-resistant material to the utmost, it has been bridged on the flax fibre macromolecular chain is not damaged, so still have antibacterial, fungicidal properties.Simultaneously yarn has effects such as antistatic, high-hygroscopicity, ultra-violet radiation resisting.
What at present produce cellulose fibers mainly adopted is viscose process, and production process is tediously long and complicated, energy consumption and operating cost height, and exist waste gas, waste water, waste residue pollution, handle multinomial problem such as recovery.And ionic liquid exists with liquid state in the scope of broad as a kind of novel cellulose solvent, and has good heat endurance, and nontoxic, non-volatility helps environmental protection and operator ' s health.Can change its physicochemical properties by the yin, yang ion population of selecting to suit, be the good solvent of many organic matters, inorganic matter and macromolecular material.Many ionic liquids are very big to cellulosic solubility, some in addition reach 25%; Be no more than 10% and adopt cellulose yellow method to produce the cellulose concentration that viscose adopted, therefore adopt the ionic liquid produce cellulose fibers to enhance productivity greatly.
The wood, cotton, bamboo, the hemp composite report that see report at present mainly are that traditional viscose process is produced bamboo fibre.As 200610020970.3.
Summary of the invention
The purpose of this invention is to provide a kind of method that adopts ion liquid dissolving and processing ceiba bamboo hemp fibre, this method has been utilized wood, cotton, bamboo, the different fiber properties of flax fibre and they are as a kind of native cellulose, can be dissolved in the cosolvent and process, with wood, cotton, bamboo, two or more is combined as raw material arbitrarily and produces composite fibre arbitrarily in the fiber crops raw material, to realize ecological safety production, it is cotton also to have overcome independent use simultaneously, the antibacterial bacteriostatic deodorant function that wood pulp does not have, also overcome independent use jute pulp, bamboo pulp fiber intensity is low, the problem of whiteness difference, and raw material sources are extensive, production technology optimization, the advantage of comprehensive various native celluloses as required.
A kind of method that adopts ion liquid dissolving and processing ceiba bamboo hemp fibre of the present invention comprises the following steps:
(1) wood that will pulverize, cotton, bamboo, hemp dissolving pulp and ionic liquid mix, dissolving, deaeration are 1～120 hour under 35～160 ℃ of temperature, the formation total solid content is 3～40% stable homogeneous spinning solution, wherein wood, cotton, bamboo are 1～96%: 1～96% with numb mass ratio: 1～96%: 1～96%, microwave radiation, apply the dissolving that certain vacuum etc. helps pulp;
(2) after filtration, after the deaeration, adopt wet spinning, dry-jet wet spinning or melt and spray wet spinning and carry out spinning, coagulating bath is solidified, and wherein coagulating bath is the ionic liquid aqueous solution of water or 0～60%, and coagulation bath temperature is 0～90 ℃, and spinning speed is 5～150 meters/minute;
(3) drawn, washing, bleaching again, thoroughly to remove the various impurity in the fiber, again through oiling, operation such as drying, obtain composite fibre.
The wood of described pulverizing, cotton, bamboo, hemp dissolving pulp be with the degree of polymerization 300～2500, the wood of alpha-cellulose content 90～100%, cotton, bamboo, hemp dissolving pulp is through mechanical crushing, pulp passes through activation processing or does not process, and numb kind can be ramie, flax, hemp, bluish dogbane (former title mestha), jute, piemarker, sisal hemp, abaca, pineapple fibre, coconut husk fiber crops etc.
Described ionic liquid is made up of CATION and anion, and CATION is that substituting group is hydrogen, C
1～C
6Alkyl, vinyl, propenyl, cyclobutenyl, ethoxy, hydroxypropyl, alkoxyl in one or more quaternary ammonium alkyl ion, alkyl quaternary phosphonium ion, alkyl imidazole ion, alkyl pyridine ion; Described anion is halide ion, BF
4 -, PF
4 -, SCN
-, CN
-, OCN
-, CNO
-, CF
3SO
3 -, CF
3COO
-, (CF
3SO
2)
2N
-, (CF
3SO
2)
2Cl
-In a kind of.
Described stretching is that fiber stretches through one or more combinations such as nervous stretching, jet stretch, plasticization drawing, air bath after-drawing or retractions, and total extensibility is 3～200%.
Described composite fibre comprises blend staple fibre and long filament, and fibre strength is 2～5cN/dtex, and the shape of fiber has routine and abnormity, and the fiber that obtains not only can be used as textile raw material, and can be used as the precursor of charcoal fiber.
Beneficial effect of the present invention:
(1) adopt ionic liquid to prepare fiber, avoided the tediously long and complicated production process of viscose process, production process obviously shortens, process energy consumption and operating cost are low, and ionic liquid is as a kind of novel cellulose solvent, nontoxic, non-volatility, help environmental protection and operator ' s health, the ion liquid aqueous solution also can be used as coagulating bath, and ionic liquid is easy to reclaim, and meets the requirement of green production;
(2) the preparation-obtained kapok bamboo of the present invention hemp composite has excellent mechanical intensity, the conventional viscose that its mechanical performance is produced apparently higher than corresponding employing viscose process;
(3) fabric made of composite fibre have that moisture pick-up properties is good, gas permeability is strong, soft, fabric fall good, colouring is easy, have feel cool, anti-microbial property, simultaneously for a kind of material being provided, as having can be made into mouth mask, protection pad, gasket material, sanitary napkin, packaging bag etc. as medicine, hygienic material.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Umber among each embodiment is parts by weight.
Embodiment 1
3 parts of wood pulps, 3 parts of cotton pulp dregs of rice, 3 parts of bamboo pulps, 1 part of fiber crops, 90 parts of [BMIM] Cl (1-butyl-3-methylimidazole hydrochloride) ionic liquid of pulverizing are mixed, stirred 24 hours down, obtain spinning solution at 45 ℃.
Spinning solution after filtration, after the deaeration, enter into through the porous spinnerets and to contain 5% ion liquid coagulating bath, coagulation bath temperature is 25 ℃.After 10% stretching, again through wash, bleach, oil, dry supervisor, spinning speed is 5 meters/minute, obtains the fiber that intensity is 3.2cN/dtex.
Embodiment 2
1 part of wood pulps, 2 parts of cotton pulp dregs of rice, 1 part of bamboo pulp, 1 part of fiber crops, 20 parts of [BMIM] Cl (1-butyl-3-methylimidazole hydrochloride) ionic liquid of pulverizing are mixed, stirred 120 hours down, obtain spinning solution at 100 ℃.
Spinning solution after filtration, after the deaeration, enter into the water coagulating bath through the porous spinnerets, coagulation bath temperature is 15 ℃.After 3% stretching, again through wash, bleach, oil, dry supervisor, spinning speed is 20 meters/minute, obtains the fiber that intensity is 3.5cN/dtex.
Embodiment 3
1 part of bamboo pulp, 1 part of bamboo pulp, 1 part of bamboo pulp, 9 parts of fiber crops, 100 parts of [AMIM] Cl (1-allyl-3-methylimidazole hydrochloride) ionic liquids of pulverizing are mixed, stirred 80 hours down, obtain spinning solution at 60 ℃.
Spinning solution after filtration, after the deaeration, enter into through the porous spinnerets and to contain 25% ion liquid coagulating bath, coagulation bath temperature is 55 ℃.Behind 8% plasticization drawing, again through wash, bleach, oil, dry supervisor, spinning speed is 30 meters/minute, obtains the fiber that intensity is 4.0cN/dtex.
Claims (6)
1. a method that adopts ion liquid dissolving and processing ceiba bamboo hemp fibre comprises the following steps:
(1) wood that will pulverize, cotton, bamboo, hemp dissolving pulp and ionic liquid mix, dissolving, deaeration are 1～120 hour under 35～160 ℃ of temperature, the formation total solid content is 3～40% stable homogeneous spinning solution, and wherein the mass ratio of wood, cotton, bamboo and fiber crops is 1～96%: 1～96%: 1～96%: 1～96%;
(2) after filtration, after the deaeration, spinning, coagulating bath is solidified;
(3) drawn, washing, bleaching again, again through oiling, drying process, composite fibre.
2. the method for employing ion liquid dissolving according to claim 1 and processing ceiba bamboo hemp fibre is characterized in that: the wood of described pulverizing, cotton, bamboo, hemp dissolving pulp be with the degree of polymerization 300～2500, the wood of alpha-cellulose content 90～100%, cotton, bamboo, hemp dissolving pulp is through mechanical crushing.
3. the method for employing ion liquid dissolving according to claim 1 and processing ceiba bamboo hemp fibre is characterized in that:
Described ionic liquid is made up of CATION and anion, and CATION is that substituting group is hydrogen, C
1～C
6Alkyl, vinyl, propenyl, cyclobutenyl, ethoxy, hydroxypropyl, alkoxyl in one or more quaternary ammonium alkyl ion, alkyl quaternary phosphonium ion, alkyl imidazole ion, alkyl pyridine ion;
Described anion is halide ion, BF
4 -, PF
4 -, SCN
-, CN
-, OCN
-, CNO
-, CF
3SO
3 -, CF
3COO
-, (CF
3SO
2)
2N
-, (CF
3SO
2)
2Cl
-In a kind of.
4. the method for employing ion liquid dissolving according to claim 1 and processing ceiba bamboo hemp fibre, it is characterized in that: the spinning in the described step (2) is wet spinning, dry-jet wet spinning or melts and sprays wet spinning and carry out spinning, wherein coagulating bath is the ionic liquid aqueous solution of water or 0～60%, coagulation bath temperature is 0～90 ℃, and spinning speed is 5～150 meters/minute.
5. the method for employing ion liquid dissolving according to claim 1 and processing ceiba bamboo hemp fibre, it is characterized in that: the stretching in the described step (3) is that fiber stretches through the one or more combination in nervous stretching, jet stretch, plasticization drawing, air bath after-drawing or the retraction, and total extensibility is 3～200%.
6. the method for employing ion liquid dissolving according to claim 1 and processing ceiba bamboo hemp fibre is characterized in that: described composite fibre comprises blend staple fibre and long filament, and fibre strength is 2～5cN/dtex, and the cross sectional shape of fiber is conventional or special-shaped.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100335141A CN101225553A (en) | 2008-02-04 | 2008-02-04 | Method for dissolving and processing ceiba bamboo hemp fibre by employing ionic liquid |
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|---|---|---|---|
| CNA2008100335141A CN101225553A (en) | 2008-02-04 | 2008-02-04 | Method for dissolving and processing ceiba bamboo hemp fibre by employing ionic liquid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358138A (en) * | 2014-10-15 | 2015-02-18 | 安徽颍元农业科技股份有限公司 | Cotton fiber with beauty efficacy and preparation method of cotton fiber |
| CN105200558A (en) * | 2015-10-20 | 2015-12-30 | 江苏科技大学 | Preparation method of sericulture fiber material |
| CN109898169A (en) * | 2018-03-26 | 2019-06-18 | 新乡化纤股份有限公司 | A kind of ionic liquid method regenerated celulose fibre and preparation method thereof |
| CN111040449A (en) * | 2019-12-26 | 2020-04-21 | 合肥中汇睿能能源科技有限公司 | Modified polyimide film and preparation method thereof |
-
2008
- 2008-02-04 CN CNA2008100335141A patent/CN101225553A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358138A (en) * | 2014-10-15 | 2015-02-18 | 安徽颍元农业科技股份有限公司 | Cotton fiber with beauty efficacy and preparation method of cotton fiber |
| CN105200558A (en) * | 2015-10-20 | 2015-12-30 | 江苏科技大学 | Preparation method of sericulture fiber material |
| CN105200558B (en) * | 2015-10-20 | 2017-09-15 | 江苏科技大学 | A kind of preparation method of silkworm and mulberry fibrous material |
| CN109898169A (en) * | 2018-03-26 | 2019-06-18 | 新乡化纤股份有限公司 | A kind of ionic liquid method regenerated celulose fibre and preparation method thereof |
| CN111040449A (en) * | 2019-12-26 | 2020-04-21 | 合肥中汇睿能能源科技有限公司 | Modified polyimide film and preparation method thereof |
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Open date: 20080723 |