CN103173876B - Nanometer bacterial cellulose ultrafine fiber processing method - Google Patents
Nanometer bacterial cellulose ultrafine fiber processing method Download PDFInfo
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- CN103173876B CN103173876B CN201110441455.3A CN201110441455A CN103173876B CN 103173876 B CN103173876 B CN 103173876B CN 201110441455 A CN201110441455 A CN 201110441455A CN 103173876 B CN103173876 B CN 103173876B
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Abstract
A kind of Nanometer bacterial cellulose ultrafine fiber processing method take bacterial cellulose wet-coating as matrix material, through puncturing at a high speed, isolating and combing effect, bacterial cellulose wet-coating is become bacteria cellulose fibre; Gained bacteria cellulose fibre is placed in defibrination in fiberizer, forms bacteria cellulose superfine fibre; Again through filter press press filtration process, prepare the superfine fibre cellulose fiber of certain moisture content, diameter, length.The invention has the beneficial effects as follows: microfine cellulose fibre length is long, fineness is thin, avirulence, and processing method cleans, simple economy, and efficiency is high, and process the fiber applications field obtained extensive, gained defibrination solution can be reused, and meets the theory of recycling economy.
Description
Technical field
The present invention relates to a kind of superfine fibre processing method, particularly a kind of Nanometer bacterial cellulose ultrafine fiber processing method.
Background technology
The molecular structure of bacteria cellulose (BacterialCellulose is called for short BC) is substantially identical with plant cellulose, but its important architectural feature and character make its practical application meaning be far longer than plant cellulose.It not only has good mechanical property, gas permeability, bioaffinity, biocompatibility, biocompatibility and good biodegradability, but also there is physicochemical property aspects such as having high-purity, high polymerization degree, high-crystallinity, high-moisture and high mechanical stability be all better than plant cellulose, these character are all caused by the specific mesh nano-supermolecule structure that formed in aqueous medium due to it.Therefore the new type natural biological nano High-tech Material of excellent performance is acknowledged as.At present, BC, in a lot of field, is being have commercial applications potentiality very widely in medicine, biomedical engineering, papermaking, food especially.
Along with the intensification that people are familiar with cellulose biosynthesis mechanism, and bacteria cellulose food, medicine, chemical industry, papermaking, high-end audio equipment, filter membrane permeable membrane and spinning etc. in successful Application.Illustrate it as at present in the world the cellulosic material of performance the best carry out furtheing investigate and realizing the rosy prospect of suitability for industrialized production.But at present, ultra-fine, overlength bacteria cellulose fibre is processed with very large technical difficulty, first, physical refining processes that is simple, convenient, high production capacity is not had; Two is study and utilize the Cheng Mo of bacteria cellulose and shaping technology also not to solve further; Three is as bio-medical material, itself and organism long term effect, degeneration, with host tissue and cell compatibility, and time in vivo, the series of problems such as the machinery of bacteria cellulose, the change of process based prediction model also needs further research.Four be that product structure is single, the problem such as product deep processing and application study insufficient investment, added value of product are low.
Bacteria cellulose is a kind of byproduct of food industries, source is wide, at the bottom of price, in the face of the huge market potential of bacteria cellulose fibre industry and the pressure of international competition, in the urgent need to carrying out the industrialization upgrading of bacteria cellulose fibre fermentation technique and deep processed product research, promote bacteria cellulose industrial progress and technical optimization, by adopting advanced science and technology, the production technology of reform traditional and corresponding process equipment thereof, the technical merit of raising industry, promote bacteria cellulose industry to modernization, industrialization and the development of automation aspect, the Application Areas of developing bacterial cellulose product, increase the added value of bacterial cellulose product, make production technology, product quality has a rapid raising, to improve China's bacteria cellulose industry whole competitiveness worldwide.
Summary of the invention
The object of the invention is to solve the above-mentioned technical problem existed in prior art, a kind of Nanometer bacterial cellulose ultrafine fiber processing method is provided.
For achieving the above object, the technical solution used in the present invention is as follows:
Nanometer bacterial cellulose ultrafine fiber processing method of the present invention, bacterial cellulose wet-coating is matrix material, comprises the steps:
(1) bacterial cellulose wet-coating after bleaching being placed in a pair diameter is between the gripping roller of 20 ~ 80mm, feeds with the speed of 10mm/min ~ 100m/min;
(2) puncture from the cellulose membrane exported between roller at a high speed through licker-in surface acupuncture, isolate and combing effect, bacterial cellulose wet-coating is become bacteria cellulose fibre;
(3) gained bacteria cellulose fibre is placed in defibrination in fiberizer, forms bacteria cellulose superfine fibre;
(4) by bacteria cellulose superfine fibre through filter press press filtration process, prepare the bacteria cellulose superfine fibre that moisture content is 15% ~ 50000%, superfine fibre diameter 10 ~ 500nm, superfine fibre length 200nm ~ 100mm.
Described licker-in comprises central shaft, on central shaft, cover has cylinder, the outer wall of cylinder is provided with needle-like combing acupuncture, diameter of cylinder is 300 ~ 600mm, acupuncture length 0.1 ~ 5cm, acupuncture bar portion diameter is 0.001 ~ 3mm, and acupuncture tip diameter is 1 ~ 100um, needle puncture tip minister degree is 1 ~ 10mm, needling density 2 ~ 1000/cm
2.
Acupuncture length is preferably 0.1 ~ 0.2cm, and needling density is preferably 10 ~ 100/cm
2.
Described acupuncture is needle-like, superhard, elastic stainless steel silk or B alloy wire.
Described bacteria cellulose film is the bacterial cellulose wet-coating after bleaching, and bacterial cellulose wet-coating is the former film of bacteria cellulose utilizing acetobacter xylinum to obtain for main bacteria seed, and this former film obtains bacterial cellulose wet-coating after NaOH solution process.
Described a pair grips roller diameter is 20 ~ 3000mm.
Adopt the method for physical thinning bacteria cellulose of the present invention, bacteria cellulose film is processed into ultra-fine, the fiber condition of overlength, traditional spinning process is adopted to process again, through carding machine slivering, after slivering, be spun into nanometer bacterial cellulose ultrafine fiber yarn through spinning machine.Utilize this processing method to process, production process is nontoxic, and processing method cleans, simple economy, and efficiency is high, processes the fiber applications field obtained extensive.
Accompanying drawing explanation
Fig. 1 bacteria cellulose superfine fibre processing method schematic flow sheet.
In figure, 1 is bacteria cellulose film, and 2 for gripping roller, and 3 is acupuncture, and 4 is thorn rod.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.
Embodiment 1
Adopt the gripping roller 2 of diameter 20mm grip and feed bacterial cellulose wet-coating 1, feeding speed is 10mm/min.
Be 300mm at diameter, rotating speed is 400 revs/min, and being implanted with density is 2/cm
2under the licker-in effect of acupuncture, carry out combing to bacterial cellulose wet-coating, segmentation obtains fibre diameter 450nm, the superfine bacteria cellulose fiber of length 5 ~ 100mm.Acupuncture length 0.1cm, acupuncture bar portion diameter is 0.001mm, and acupuncture tip diameter is 1um, and needle puncture tip minister degree is 1mm.
Gained bacteria cellulose fibre is placed in defibrination in fiberizer, form bacteria cellulose superfine fibre, then through filter press press filtration process, the bacteria cellulose superfine fibre moisture content prepared is 20000%, superfine fibre diameter is 450nm, and superfine fibre length is 5 ~ 100mm.
Embodiment 2
Adopt the gripping roller of diameter 30mm grip and feed bacterial cellulose wet-coating, feeding speed is 20mm/min.
Be 300mm at diameter, rotating speed is 400 revs/min, and being implanted with density is 20/cm
2under the licker-in effect of acupuncture, carry out combing to bacterial cellulose wet-coating, segmentation obtains fibre diameter 450nm, the superfine bacteria cellulose fiber of length 5 ~ 100mm.Acupuncture length 1cm, acupuncture bar portion diameter is 0.1mm, and acupuncture tip diameter is 10um, and needle puncture tip minister degree is 2mm.
Gained bacteria cellulose fibre is placed in defibrination in fiberizer, form bacteria cellulose superfine fibre, then through filter press press filtration process, the bacteria cellulose superfine fibre moisture content prepared is 20000%, superfine fibre diameter is 350nm, and superfine fibre length is 5 ~ 100mm.
Embodiment 3
Adopt the gripping roller of diameter 40mm grip and feed bacterial cellulose wet-coating, feeding speed is 40mm/min.
Be 300mm at diameter, rotating speed is 400 revs/min, and being implanted with density is 100/cm
2under the licker-in effect of acupuncture, carry out combing to bacterial cellulose wet-coating, segmentation obtains fibre diameter 450nm, the superfine bacteria cellulose fiber of length 5 ~ 100mm.Acupuncture length 2cm, acupuncture bar portion diameter is 2mm, and acupuncture tip diameter is 20um, and needle puncture tip minister degree is 5mm.
Gained bacteria cellulose fibre is placed in defibrination in fiberizer, form bacteria cellulose superfine fibre, then through filter press press filtration process, the bacteria cellulose superfine fibre moisture content prepared is 20000%, superfine fibre diameter is 250nm, and superfine fibre length is 5 ~ 100mm.
Embodiment 4
Adopt the gripping roller of diameter 60mm grip and feed bacterial cellulose wet-coating, feeding speed is 60mm/min.
Be 300mm at diameter, rotating speed is 400 revs/min, and being implanted with density is 200/cm
2under the licker-in effect of acupuncture, carry out combing to bacterial cellulose wet-coating, segmentation obtains fibre diameter 450nm, the superfine bacteria cellulose fiber of length 5 ~ 100mm.Acupuncture length 4cm, acupuncture bar portion diameter is 1mm, and acupuncture tip diameter is 50um, and needle puncture tip minister degree is 8mm.
Gained bacteria cellulose fibre is placed in defibrination in fiberizer, form bacteria cellulose superfine fibre, then through filter press press filtration process, the bacteria cellulose superfine fibre moisture content prepared is 20000%, superfine fibre diameter is 200nm, and superfine fibre length is 5 ~ 100mm.
Embodiment 5
Adopt the gripping roller of diameter 55mm grip and feed bacterial cellulose wet-coating, feeding speed is 80mm/min.
Be 300mm at diameter, rotating speed is 400 revs/min, and being implanted with density is 500/cm
2under the licker-in effect of acupuncture, carry out combing to bacterial cellulose wet-coating, segmentation obtains fibre diameter 450nm, the superfine bacteria cellulose fiber of length 5 ~ 100mm.Acupuncture length 5cm, acupuncture bar portion diameter is 3mm, and acupuncture tip diameter is 10um, and needle puncture tip minister degree is 10mm.
Gained bacteria cellulose fibre is placed in defibrination in fiberizer, form bacteria cellulose superfine fibre, then through filter press press filtration process, the bacteria cellulose superfine fibre moisture content prepared is 20000%, superfine fibre diameter is 150nm, and superfine fibre length is 5 ~ 100mm.
Embodiment 6
Adopt the gripping roller of diameter 60mm grip and feed bacterial cellulose wet-coating, feeding speed is 100mm/min.
Be 300mm at diameter, rotating speed is 400 revs/min, and being implanted with density is 1000/cm
2under the licker-in effect of acupuncture, carry out combing to bacterial cellulose wet-coating, segmentation obtains fibre diameter 450nm, the superfine bacteria cellulose fiber of length 5 ~ 100mm.Acupuncture length 0.2cm, acupuncture bar portion diameter is 0.2mm, and acupuncture tip diameter is 2um, and needle puncture tip minister degree is 1mm.
Gained bacteria cellulose fibre is placed in defibrination in fiberizer, form bacteria cellulose superfine fibre, then through filter press press filtration process, the bacteria cellulose superfine fibre moisture content prepared is 20000%, superfine fibre diameter is 100nm, and superfine fibre length is 5 ~ 100mm.
Claims (3)
1. a Nanometer bacterial cellulose ultrafine fiber processing method, is characterized in that: comprise the steps:
(1) bacterial cellulose wet-coating after bleaching being placed in a pair diameter is between the gripping roller of 20 ~ 80mm, feeds with the speed of 10mm/min ~ 100mm/min;
(2) puncture from the cellulose wet-coating exported between roller at a high speed through licker-in surface acupuncture, isolate and combing effect, bacterial cellulose wet-coating is become bacteria cellulose fibre;
(3) gained bacteria cellulose fibre is placed in defibrination in fiberizer, forms bacteria cellulose superfine fibre;
(4) by bacteria cellulose superfine fibre through filter press press filtration process, prepare the bacteria cellulose superfine fibre that moisture content is 15% ~ 50000%, superfine fibre diameter 10 ~ 500nm, superfine fibre length 5 ~ 100mm;
Described licker-in comprises central shaft, on central shaft, cover has cylinder, the outer wall of cylinder is provided with needle-like combing acupuncture, diameter of cylinder is 300 ~ 600mm, acupuncture length 0.1 ~ 5cm, acupuncture bar portion diameter is 0.001 ~ 3mm, and acupuncture tip diameter is 1 ~ 100 μm, needle puncture tip minister degree is 1 ~ 10mm, needling density 2 ~ 1000/cm
2.
2. Nanometer bacterial cellulose ultrafine fiber processing method according to claim 1, is characterized in that: described acupuncture is needle-like, superhard, elastic stainless steel silk.
3. Nanometer bacterial cellulose ultrafine fiber processing method according to claim 1, it is characterized in that: bacterial cellulose wet-coating is the former film of bacteria cellulose utilizing acetobacter xylinum to obtain for main bacteria seed, and this former film obtains bacterial cellulose wet-coating after NaOH solution process.
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| US3302501A (en) * | 1965-09-24 | 1967-02-07 | Phillips Petroleum Co | Method of fibrillating plastic film by passing the film through rotating piercing means |
| US3724198A (en) * | 1970-07-10 | 1973-04-03 | Hercules Inc | Method for preparing spun yarns |
| CN100494262C (en) * | 2006-05-12 | 2009-06-03 | 四川省宜宾五粮液集团有限公司 | Preparation method for cellulose membrane |
| CN101215388A (en) * | 2008-01-15 | 2008-07-09 | 东华大学 | Method for preparing bacteria cellulose composite membrane |
| CN101509026A (en) * | 2009-03-27 | 2009-08-19 | 上海应用技术学院 | Bacteria cellulose compound film, preparation and uses thereof |
| CN101942705B (en) * | 2010-06-29 | 2013-04-17 | 东华大学 | Preparation method of regenerated bacterial cellulose fiber |
| CN101914823A (en) * | 2010-07-12 | 2010-12-15 | 青岛东佳纺机（集团）有限公司 | Airflow nozzle stripping device |
| CN102146166B (en) * | 2010-12-21 | 2012-08-08 | 东华大学 | Method for loading oil soluble additive into bacterial cellulose |
| CN102127236B (en) * | 2010-12-31 | 2012-11-28 | 石家庄学院 | Cellulose dissolvent, and application thereof in dissolving and regenerating cellulose |
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| Title |
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| PFI磨处理细菌纤维素湿膜的分散性能及成纸性能;王志杰 等;《纸和造纸》;20121115;第31卷(第11期);38-41 * |
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