CN102839441A - High-elasticity keratin regenerated fiber and preparation method thereof - Google Patents
High-elasticity keratin regenerated fiber and preparation method thereof Download PDFInfo
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- CN102839441A CN102839441A CN2012103594568A CN201210359456A CN102839441A CN 102839441 A CN102839441 A CN 102839441A CN 2012103594568 A CN2012103594568 A CN 2012103594568A CN 201210359456 A CN201210359456 A CN 201210359456A CN 102839441 A CN102839441 A CN 102839441A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 230000001172 regenerating effect Effects 0.000 claims description 27
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 12
- 102000004169 proteins and genes Human genes 0.000 claims description 12
- 108090000623 proteins and genes Proteins 0.000 claims description 12
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 12
- 210000004209 hair Anatomy 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical group [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 239000003398 denaturant Substances 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 8
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 8
- 238000005119 centrifugation Methods 0.000 claims description 7
- 239000012141 concentrate Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000010612 desalination reaction Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 238000009987 spinning Methods 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 6
- 229940001584 sodium metabisulfite Drugs 0.000 claims description 6
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 6
- 210000002268 wool Anatomy 0.000 claims description 6
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- BHZRJJOHZFYXTO-UHFFFAOYSA-L potassium sulfite Chemical compound [K+].[K+].[O-]S([O-])=O BHZRJJOHZFYXTO-UHFFFAOYSA-L 0.000 claims description 5
- 235000019252 potassium sulphite Nutrition 0.000 claims description 5
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims description 5
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 5
- 235000010265 sodium sulphite Nutrition 0.000 claims description 5
- DJEHXEMURTVAOE-UHFFFAOYSA-M potassium bisulfite Chemical compound [K+].OS([O-])=O DJEHXEMURTVAOE-UHFFFAOYSA-M 0.000 claims description 4
- 229940099427 potassium bisulfite Drugs 0.000 claims description 4
- 235000010259 potassium hydrogen sulphite Nutrition 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 241000283973 Oryctolagus cuniculus Species 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 241000282836 Camelus dromedarius Species 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 238000004153 renaturation Methods 0.000 claims description 2
- 150000003384 small molecules Chemical class 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 241001465754 Metazoa Species 0.000 abstract description 5
- 229920002334 Spandex Polymers 0.000 abstract description 3
- 239000004759 spandex Substances 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 230000002194 synthesizing effect Effects 0.000 abstract description 2
- DPSZMPUXFZOWAC-UHFFFAOYSA-N [S].S=O Chemical compound [S].S=O DPSZMPUXFZOWAC-UHFFFAOYSA-N 0.000 abstract 1
- 238000010035 extrusion spinning Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 44
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000008929 regeneration Effects 0.000 description 8
- 238000011069 regeneration method Methods 0.000 description 8
- 238000002166 wet spinning Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000000429 assembly Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 5
- 229960002163 hydrogen peroxide Drugs 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 108010022355 Fibroins Proteins 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920000793 Azlon Polymers 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229920002494 Zein Polymers 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000005019 zein Substances 0.000 description 1
- 229940093612 zein Drugs 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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- Artificial Filaments (AREA)
Abstract
The invention provides a high-elasticity keratin regenerated fiber and a preparation method thereof. The high-elasticity keratin regenerated fiber is prepared by carrying out an extrusion spinning method on pure keratin solution which is obtained by carrying out a reduction method on waste natural keratin fiber, wherein the high-elasticity keratin regenerated fiber is adjustable in elasticity, and has good elastic property and mechanical property. The elastic elongation is adjustable within 200%-420%, the elastic recovery rate is 96%-99%, the breaking strength is 0.2-0.5 GPa, and the initial modulus is 0.05-0.01 GPA. According to the invention, the elasticity of the keratin is adjusted by controlling a disulfide bond cross-linked structure formed by sulfur oxide-sulfur coupling in an extruding and fiber-forming process of the keratin, and the keratin regenerated fiber with elastic property similar to that of spandex fibre can be prepared, so that not only is a novel effective way for making the waste animal fiber profitable provided, but also a biological substitute for synthesizing the high-elasticity keratin regenerated fiber is found.
Description
Technical field
The present invention relates to a kind of high-elastic regenerating ceratin fibres and preparation method thereof, belong to macromolecular material and field of engineering technology.
Background technology
Seeing that the production of chemical synthetic fiber depends on limited petroleum resources, the mankind more and more pay close attention to how to develop reproducible natural resources, prepare novel regenerated fiber.At present; True protein regenerated fibers such as milk fibre, fibroin fiber, zein fiber, soybean fiber have been obtained; And protein and synthetic high polymer grafting, copolymerization, blended fiber; Greatly expanded the raw material sources of fibre, simultaneously, made the performance of traditional fibre be improved and promote.
The regeneration keratin fiber also is a member in the azlon, and its raw material sources are extensive, and are cheap.The annual discarded animal fiber that produces up to ten million tons of China's wool industry and animal husbandry; Because the keratin fiber material is rich in disulfide bond; Be difficult for natural degradation, abandon arbitrarily and can cause serious environmental to pollute, and in these natural fiber materials; Keratic content is fabulous reproducible utilization resource then up to more than 90%.Since the nineties in 20th century, the research of regeneration keratin fiber is very active always.
Chinese patent (99116699.x) provides a kind of animal wool of will discarding through degreasing impurity elimination, dissolving (NaOH solution), crosslinked, sealing free amine group, albumen spinning solution, wet spinning, the preparation pure keratin fiber of regeneration and with the method for the regeneration keratin fiber of viscose glue, polyvinyl alcohol blending.The mechanical property of this patent and unexposed regenerating ceratin fibres.
Japan scholar Chai Shan is dried to be born in and to report the keratin that oxidizing process is extracted and the experimental study (fiber process (day) of fibroin blend wet spinning and keratin and polyvinyl alcohol blending wet spinning in 2000; 2000; 52 (8); 351-361), result of study shows that pure keratin and keratin and fibroin blend wet spinning gained strand are fragility, and keratin and polyvinyl alcohol blending wet spinning can obtain having the strand of favorable elasticity.
Domestic scholars Liu lets with adopting reducing process to extract keratin solution; And adopt organic solvent deposition method and salting out method to obtain the high concentration keratin; Prepared nascent regenerating ceratin fibres through wet spinning; And to the pattern of regenerating ceratin fibres carried out characterizing (wool spinning science and technology, 2004 (11), 5-9).Aspect the spinning of pure regenerating ceratin fibres, carried out useful trial.
All adopt wet spinning to prepare the regeneration keratin fiber in above patent and the bibliographical information; Keratin is separated out in coagulating bath; The mechanical property of the pure keratin fiber of gained shows as fragility more, does not have serviceability, and this also is a bottleneck in the keratin regeneration.In fact; Keratin is rich in disulfide bond; Key point through effectively utilizing disulfide bond in the keratin solution leaching process and become the crosslinked again of sulfur-bearing active group in the fine process can be regulated and control the elastic performance of regeneration keratin fiber, the regeneration keratin fiber that preparation has excellent resilient properties.
The present invention provides a kind of high-elastic regenerating ceratin fibres and preparation method thereof, extracts keratin solution with reducing process, and this reducing process is with low cost, and toxicity is little, and is easy to operate, extracts the keratin solution that obtains being rich in unstable sulphur residue.Again through becoming sulfur oxide in the fine process-sulphur coupling to form new disulfide bond crosslinking structure; The regenerating ceratin fibres that can prepare the similar spandex fibre of elastic performance; Not only turning waste into wealth for discarded animal fiber provides an effective way, and has found the biological substitution article for synthesizing high elasticity.
Summary of the invention
The purpose of this invention is to provide a kind of high-elastic regenerating ceratin fibres and preparation method thereof.
In order to achieve the above object, technical scheme of the present invention provides a kind of high-elastic regenerating ceratin fibres.It is characterized in that high-elastic regenerating ceratin fibres is made through extrude spinning method through the pure keratin solution that reducing process obtains by discarded natural keratin fiber, the elasticity of high-elastic regenerating ceratin fibres has Modulatory character, and shows the good mechanical performance.The elastic extension controlled range is 200%-420%, and elastic recovery rate is 96%-99%, and fracture strength is 0.2-0.5GPa, and initial modulus is 0.05-0.01GPa.
Described natural keratin fiber is preferably waste wool, ox hair, pig hair, the rabbit hair, the people sends out or camel hair.
Described reducing process agents useful for same is the composition of reductant, protein denaturant.
Described reductant is sodium sulfite, sodium hydrogensulfite, potassium sulfite, potassium bisulfite or Sodium Metabisulfite, and the mass percent concentration of reductant is 7%-12%.
Described protein denaturant is preferably urea, thiocarbamide or lithium bromide, and the molar concentration of protein denaturant is 6-10M.
The preparation method of described pure keratin solution is:
The first step: after natural keratin fiber carried out shredding, removal of impurities, cleaning and dried successively; Cut into the segment of fiber of 3-6mm; Be that 2.5-10g/250ml is immersed in the solution that contains reductant and protein denaturant and stirs 2-6h at 50-90 ℃ with the solid-to-liquid ratio, agitator speed is 100-400r/min;
Second step: the mixture that will stir the back gained removes by filter unreacted natural keratin fiber with the 80-120 eye mesh screen, and centrifugal treating is removed the fine impurities in the filtrating, centrifugal speed 3000-7000rpm, and centrifugation time 0.2-1h then gets supernatant.
The 3rd step: under the room temperature condition, quick desalination is removed the small-molecule substance in the solution under oxygen-free environment, then concentrates, and obtains pure keratin solution, and concentration is 2%-5%.
Said extrude spinning method is: under the 50-70 ℃ of hot blast environmental condition; Under 2-3MPa by pressurizing unit extrusion film; Evenly spray oxidant to film simultaneously, or in pressurizing unit, feed certain density mobile oxygen, vertically cutting obtains the angular flexibility azelon behind the keratin membrane dry solidification.
The elastic performance regulate and control method of described high-elastic regenerating ceratin fibres is: with concentration is that 0.001-0.01% hydrogen peroxide atomized water solution evenly sprayed the liquid keratin membrane surface that extruding obtains in 1: 100 by mass percentage, with macromolecular crosslinking rate and crosslinking degree in the adjustment keratin liquid film.Perhaps feeding concentration at keratin membrane film forming setting up period is the mobile oxygen of 40-70% volume ratio, to regulate and control the elasticity of the follow-up protein renaturation fiber that obtains.
Description of drawings
The high-elastic regenerating ceratin fibres original appearance photo that Fig. 1 obtains for the inventive method.
Stretch 200% photo of the high-elastic regenerating ceratin fibres that Fig. 2 obtains for the inventive method.
Stretch 300% photo of the high-elastic regenerating ceratin fibres that Fig. 3 obtains for the inventive method.
Stretch 412% photo of the high-elastic regenerating ceratin fibres that Fig. 4 obtains for the inventive method.
The high-elastic regenerating ceratin fibres that Fig. 5 obtains for the inventive method stretches after 412%, removes the photo after external force is replied.
The specific embodiment
Specify the present invention through embodiment below.
Embodiment 1
The people who cleans is sent out the segment of fiber that cuts into 3-5mm length; With the solid-to-liquid ratio is that 1g/100ml is immersed in the solution of 250ml Sodium Metabisulfite and urea; Wherein, said solution is to obtain through Sodium Metabisulfite is added in the 6M aqueous solution of urea, and the mass concentration of Sodium Metabisulfite is 7%; Under 90 ℃, mixture is stirred 2h, agitator speed 200r/min.After 80 eye mesh screens filter, get supernatant behind the 7000rpm centrifugation 0.2h, adopt under the nitrogen protection condition filter assemblies quick desalination to remove to concentrate behind the low molecular weight salt material in the solution that to obtain mass percent concentration be 2% keratin solution.
Keratin solution under 50 ℃ of hot blast environmental conditions, by pressurizing unit extrusion film, is evenly sprayed 0.001% hydrogen peroxide atomized water solution under the 2MPa pressure simultaneously to film, vertically cutting obtains the angular flexibility azelon behind the keratin membrane dry solidification.
Embodiment 2
The waste wool of cleaning is cut into the long segment of fiber of 3-5mm; With the solid-to-liquid ratio is that 3g/100ml is immersed in the solution of 250ml potassium bisulfite and urea; Wherein, said solution is to obtain through Sodium Metabisulfite is added in the 7M aqueous solution of urea, and the mass concentration of potassium bisulfite is 8%; Under 60 ℃, mixture is stirred 5h, agitator speed 300r/min.After 120 eye mesh screens filter, get supernatant behind the 4000rpm centrifugation 0.4h, adopt under the nitrogen protection condition filter assemblies quick desalination to remove to concentrate behind the low molecular weight salt material in the solution that to obtain mass percent concentration be 3% keratin solution.
Keratin solution under 70 ℃ of hot blast environmental conditions, by pressurizing unit extrusion film, is evenly sprayed 0.01% hydrogen peroxide atomized water solution under the 3MPa pressure simultaneously to film, vertically cutting obtains the angular flexibility azelon behind the keratin membrane dry solidification.
Embodiment 3
The pig hair of cleaning is cut into the long segment of fiber of 3-5mm; With the solid-to-liquid ratio is that 4g/100ml is immersed in the solution of 250ml potassium sulfite and thiocarbamide; Wherein, said solution is to obtain through potassium sulfite is added in the 10M thiourea solution, and the mass concentration of potassium sulfite is 12%; Under 50 ℃, mixture is stirred 4h, agitator speed 100r/min.After 100 eye mesh screens filter, get supernatant behind the 3000rpm centrifugation 1h, adopt under the nitrogen protection condition filter assemblies quick desalination to remove to concentrate behind the low molecular weight salt material in the solution that to obtain mass percent concentration be 5% keratin solution.
Keratin solution under 60 ℃ of hot blast environmental conditions, by pressurizing unit extrusion film, is evenly sprayed 0.005% hydrogen peroxide atomized water solution under the 2.5MPa pressure simultaneously to film, vertically cutting obtains the angular flexibility azelon behind the keratin membrane dry solidification.
Embodiment 4
The rabbit hair of cleaning is cut into the long segment of fiber of 3-5mm; With the solid-to-liquid ratio is that 2g/100ml is immersed in the solution of 250ml sodium hydrogensulfite and lithium bromide; Wherein, said solution is to obtain through sodium hydrogensulfite is added in the 8M lithium bromide water solution, and the mass concentration of sodium hydrogensulfite is 10%; Under 70 ℃, mixture is stirred 6h, agitator speed 400r/min.After 80 eye mesh screens filter, get supernatant behind the 5000rpm centrifugation 0.5h, adopt under the nitrogen protection condition filter assemblies quick desalination to remove to concentrate behind the low molecular weight salt material in the solution that to obtain mass percent concentration be 4% keratin solution.
At 70 ℃, under the oxygen volume ratio 40% hot blast environmental condition, by pressurizing unit extrusion film, vertically cutting obtains the angular flexibility azelon behind the keratin membrane dry solidification under the 2.5MPa pressure with keratin solution.
Embodiment 5
The ox hair of cleaning is cut into the long segment of fiber of 3-5mm; With the solid-to-liquid ratio is that 3g/100ml is immersed in the solution of 250ml sodium sulfite and thiocarbamide; Wherein, said solution is to obtain through sodium sulfite is added in the 9M thiourea solution, and the mass concentration of sodium sulfite is 8%; Under 60 ℃, mixture is stirred 4h, agitator speed 300r/min.After 100 eye mesh screens filter, get supernatant behind the 4000rpm centrifugation 0.5h, adopt under the nitrogen protection condition filter assemblies quick desalination to remove to concentrate behind the low molecular weight salt material in the solution that to obtain mass percent concentration be 5% keratin solution.
At 50 ℃, under the oxygen volume ratio 70% hot blast environmental condition, by pressurizing unit extrusion film, vertically cutting obtains the angular flexibility azelon behind the keratin membrane dry solidification under the 2MPa pressure with keratin solution.
The relation of table 1 oxide concentration and high-elastic keratin fiber mechanical property
Can find out from table 1; Reduce with hydrogenperoxide steam generator concentration, the oxidized degree of the macromolecular mercapto groups of the keratin that reducing process makes reduces, and the crosslinking degree again of keratin molecule reduces; The elastic extension of the angular flexibility azelon of gained increases; Elastic recovery rate descends, and fracture strength reduces, and modulus descends.Compare with the chemical oxidization method of peroxide atomized water solution spraying, air oxidation process is gentle more, and the elasticity of the angular flexibility azelon that obtains is higher, can reach elastic extension and the mechanical property close with spandex fibre.
Claims (6)
1. high-elastic regenerating ceratin fibres and preparation method thereof; It is characterized in that; High-elastic regenerating ceratin fibres is made through extrude spinning method through the pure keratin solution that reducing process obtains by discarded natural keratin fiber; The elasticity of high-elastic regenerating ceratin fibres has Modulatory character, and shows the good mechanical performance.The elastic extension controlled range is 200%-420%, and elastic recovery rate is 96%-99%, and fracture strength is 0.2-0.5GPa, and initial modulus is 0.05-0.01GPa.
2. a kind of high-elastic regenerating ceratin fibres as claimed in claim 1 and preparation method thereof is characterized in that, described natural keratin fiber is preferably waste wool, ox hair, pig hair, the rabbit hair, the people sends out or camel hair.
3. a kind of high-elastic regenerating ceratin fibres as claimed in claim 1 and preparation method thereof is characterized in that, described reducing process agents useful for same is the composition of reductant, protein denaturant.Described reductant is sodium sulfite, sodium hydrogensulfite, potassium sulfite, potassium bisulfite or Sodium Metabisulfite, and the mass percent concentration of reductant is 7%-12%.Described protein denaturant is preferably urea, thiocarbamide or lithium bromide, and the molar concentration of protein denaturant is 6-10M.
4. a kind of high-elastic regenerating ceratin fibres as claimed in claim 1 and preparation method thereof is characterized in that, described pure keratin solution preparation method's concrete steps are:
1. after natural keratin fiber being carried out shredding, removal of impurities, cleaning and dried successively; Cut into the segment of fiber of 3-6mm; Be that 2.5-10g/250ml is immersed in the solution that contains reductant and protein denaturant and stirs 2-6h at 50-90 ℃ with the solid-to-liquid ratio, agitator speed is 100-400r/min;
The mixture that 2. will stir the back gained removes by filter unreacted natural keratin fiber with the 80-120 eye mesh screen, and centrifugal treating is removed the fine impurities in the filtrating, centrifugal speed 3000-7000rpm, and centrifugation time 0.2-1h then gets supernatant.
3. under the room temperature condition, quick desalination is removed the small-molecule substance in the solution under oxygen-free environment, then concentrates, and obtains pure keratin solution, and concentration is 2%-5%.
5. a kind of high-elastic regenerating ceratin fibres as claimed in claim 1 and preparation method thereof; It is characterized in that described preparation method is an extrude spinning method, concrete operations are: under the 50-70 ℃ of hot blast environmental condition; Under 2-3MPa by pressurizing unit extrusion film; Evenly spray oxidant to film simultaneously, or in pressurizing unit, feed certain density mobile oxygen, vertically cutting obtains the angular flexibility azelon behind the keratin membrane dry solidification.
6. a kind of high-elastic regenerating ceratin fibres as claimed in claim 1 and preparation method thereof; It is characterized in that; The elastic performance regulate and control method of described high-elastic regenerating ceratin fibres is: with concentration is that 0.001-0.01% hydrogen peroxide atomized water solution evenly sprayed the liquid keratin membrane surface that extruding obtains in 1: 100 by mass percentage, with macromolecular crosslinking rate and crosslinking degree in the adjustment keratin liquid film.Perhaps feeding concentration at keratin membrane film forming setting up period is the mobile oxygen of 40-70% volume ratio, to regulate and control the elasticity of the follow-up protein renaturation fiber that obtains.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941005A (en) * | 2015-05-18 | 2015-09-30 | 天津工业大学 | Preparation method of hydroxyapatite-enhanced keratin composite aggregate |
| CN105924654A (en) * | 2016-05-05 | 2016-09-07 | 东华大学 | Method for regenerating human hair keratin by means of L-cysteine |
| CN115151235A (en) * | 2020-01-21 | 2022-10-04 | 纽泰克温图斯公司 | Continuous production of keratin fibers |
| CN116334772A (en) * | 2021-12-23 | 2023-06-27 | 北京石墨烯研究院 | Regenerated keratin fiber and wet spinning method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104941005A (en) * | 2015-05-18 | 2015-09-30 | 天津工业大学 | Preparation method of hydroxyapatite-enhanced keratin composite aggregate |
| CN104941005B (en) * | 2015-05-18 | 2018-02-02 | 天津工业大学 | A kind of preparation method of hydroxyapatite enhancing keratin compound bone |
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| CN115151235A (en) * | 2020-01-21 | 2022-10-04 | 纽泰克温图斯公司 | Continuous production of keratin fibers |
| CN116334772A (en) * | 2021-12-23 | 2023-06-27 | 北京石墨烯研究院 | Regenerated keratin fiber and wet spinning method thereof |
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