CN106988137A - A kind of clean preparation method of higher concentration nano-cellulose fibril - Google Patents
A kind of clean preparation method of higher concentration nano-cellulose fibril Download PDFInfo
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- CN106988137A CN106988137A CN201710273206.5A CN201710273206A CN106988137A CN 106988137 A CN106988137 A CN 106988137A CN 201710273206 A CN201710273206 A CN 201710273206A CN 106988137 A CN106988137 A CN 106988137A
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- 229920002678 cellulose Polymers 0.000 title claims abstract description 48
- 239000001913 cellulose Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 108090000790 Enzymes Proteins 0.000 claims abstract description 29
- 102000004190 Enzymes Human genes 0.000 claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000000227 grinding Methods 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims description 60
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000000265 homogenisation Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 229920001046 Nanocellulose Polymers 0.000 claims 12
- 102000004533 Endonucleases Human genes 0.000 claims 1
- 108010042407 Endonucleases Proteins 0.000 claims 1
- 238000010009 beating Methods 0.000 claims 1
- 238000004043 dyeing Methods 0.000 claims 1
- 238000009996 mechanical pre-treatment Methods 0.000 claims 1
- 238000007670 refining Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010297 mechanical methods and process Methods 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000006378 damage Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 229940088598 enzyme Drugs 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- 108010059892 Cellulase Proteins 0.000 description 5
- 229940106157 cellulase Drugs 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 241001343274 Dichrostachys spicata Species 0.000 description 3
- 238000004630 atomic force microscopy Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000012978 lignocellulosic material Substances 0.000 description 2
- 239000013081 microcrystal Substances 0.000 description 2
- 239000002121 nanofiber Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 108091008146 restriction endonucleases Proteins 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/063—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using grinding devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Paper (AREA)
Abstract
The invention discloses a kind of clean preparation method of higher concentration nano-cellulose fibril, following steps are specifically included：Lignocellulosic is pre-processed by Mechanical Method, then higher concentration nano-cellulose fibril will be obtained after pretreated material progress ferment treatment, nanosizing grinding, filtering, high-pressure homogeneous processing.The present invention is pre-processed using compound enzyme to lignocellulosic, and obtained nano-cellulose fibril has higher yield and concentration；Without using having to environment, the chemical reagent of destruction, wastewater discharge be low, technique is simple in whole preparation process of the present invention, and the large-scale production for higher concentration nano-cellulose fibril provides safe and environment-friendly method；The lignocellulose raw material of low cost can be converted into the nano-cellulose fibril with high added value by the present invention, with good Social benefit and economic benefit.
Description
Technical field
The invention belongs to natural macromolecular material field, and in particular to a kind of cleaning life of higher concentration nano-cellulose fibril
Production method.
Background technology
Lignocellulosic is that inexhaustible, the nexhaustible natural polymer synthesized by plant by photosynthesis polymerize
Thing, the structure that there is crystal region and noncrystalline domain as other crystalline polymers, i.e. lignocellulosic are by many fibrils
The high molecular polymer of silk aggregation.By the method for controllable chemistry, physics or biology, lignocellulosic material can be turned
Turn to the cellulose fibril that diameter is less than 100 nm, i.e. nano-cellulose.Compared with non-nanofiber element, nano-cellulose tool
There are many good characteristics, such as high-crystallinity, high-purity, high Young's modulus, high intensity, high-hydrophilic, in addition with natural fibre
The dimension element characteristic such as degradable and renewable, makes it show huge application prospect in high-performance composite materials.
At present, the preparation of nano-cellulose is usually required itself and reactants separate by purifying process such as centrifugation, dialysis,
The solids content for finally giving the nano-cellulose colloid of neutrality is relatively low.However, low-solid content increases the transport of nano-cellulose
Cost, limits it and is widely popularized and use.The A of Chinese patent CN201310236188.5 and CN 104072787 discloses one kind
The preparation method of higher concentration nano-cellulose colloid, the former is by the technique of vacuum distillation by the nano microcrystalline fiber of low concentration
Plain colloid is concentrated into higher concentration（Mass fraction is more than 40%）, but the nano micro crystal cellulose needs process before concentration is longer
Time dialysed, so as to remove the residual acid in nano micro crystal cellulose, whole process is time-consuming longer；The latter passes through mistake
Filter, freezing, thaw make nano-cellulose reunite precipitation, then by its press filtration be filter cake, last Mechanical Method redisperse into water so that
Obtain higher concentration（3.77%）Nanofiber colloid, but because intermolecular hydrogen bonding and entanglement are acted on, after reunite precipitation, press filtration
Nano-cellulose, is difficult to be consistent with the original form compared with colloid after redisperse, and the made nano microcrystalline of acid system is fine
The size for tieing up element is smaller, can only be separated by hyperfiltration process, and whole process is time-consuming still longer.Therefore, it is necessary to research and develop
A kind of process more efficiently, economic prepares higher concentration nano-cellulose, so as to realize the scale of nano-cellulose
Production, reduction cost of transportation.
By cellulase treatment the surface of state of aggregation cellulose fibre can be made to become loose, it is easy to water swelling.In machine
It is easy to make lignocellulosic fibrillation be nano-cellulose in the presence of tool power.And without using environmentally harmfulization in whole process
Learn reagent, do not produce that spent acid, wastewater discharge be low, technique is simple.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, higher concentration nanometer has been prepared by ferment treatment method
Cellulose fibril, a kind of environmentally friendly technique is provided for the production of higher concentration nano-cellulose fibril.
The technical scheme that the present invention takes is as follows.
A kind of clean preparation method of higher concentration nano-cellulose fibril, comprises the following steps：
Lignocellulosic is carried out after Mechanical Method pretreatment and cellulase treatment, then carry out nanosizing grinding, it is concentration, high-pressure homogeneous
Processing obtains higher concentration nano-cellulose fibril.
It is preferred that, this method specifically includes following steps：
（1）Lignocellulosic slurry is subjected to defibrination pretreatment；
（2）By step（1）Slurry after processing carries out cellulase treatment；
（3）By step（2）Slurry after cellulase treatment is stirred decentralized processing；
（4）By step（3）Slurry after dispersed with stirring carries out nanosizing mechanical lapping processing；
（5）By step（4）Slurries filtration separation after grinding；
（6）By step（5）Slurry after being separated by filtration carries out high-pressure homogeneous processing；
（7）By step（6）Slurries filtration separation after homogeneous, obtains higher concentration nano-cellulose fibril.
It is further preferred that step（1）In, the concentration of lignocellulosic slurry is 10wt%-25 wt% after processing.
It is further preferred that the concentration of slurry is 4.5-6 for 2 wt%-10 wt%, pH during the cellulase treatment；It is biological
The temperature of ferment treatment is 35-60 DEG C, and the time is 1-40h.
It is further preferred that step（2）In, the biology enzyme is the enzyme that fibre structure can be made loose.
It is further preferred that the biology enzyme is cellulose complex enzyme, mashing enzyme or restriction endonuclease.
It is further preferred that step（3）In, the rotating speed of dispersed with stirring processing is 500-1500 r/min, and the time is
0.5-10h。
It is further preferred that step（4）In, regulation slurry concentration is 0.01 when carrying out nanosizing mechanical lapping processing
Wt%-3 wt%, pressure is 0-60MPa.
It is further preferred that step（5）In, the filter screen of the filtering is 100-2000 mesh.
It is further preferred that step（6）In, it is 70-250MPa to carry out homogeneous internal fluid pressure during high-pressure homogeneous processing,
Pressure is more than atmospheric pressure at homogenizer spout；The concentration of described nano-cellulose fibril is 3-10wt%.
It is further preferred that step（7）In, the filter screen of the filtering is 100-2000 mesh.
It is further preferred that a kind of process for cleanly preparing for preparing higher concentration nano-cellulose is comprised the following steps that：
（1）Cellulose paste is subjected to defibrination process, slurry concentration is between 10 wt%-25 wt%；
（2）Slurry after above-mentioned processing is digested, slurry concentration is that 1 wt%-10 wt%, pH is 4.5-6, and temperature is 40-
60 DEG C, enzymolysis time is 1-36h；
（3）Slurry after above-mentioned enzymolysis is stirred decentralized processing, rotating speed is 500-1500 r/min, and the time is 1-10h；
（4）Mechanical lapping processing is carried out to the slurry after above-mentioned decentralized processing, regulation slurry concentration is 0.01 wt%-3 wt%, pressure
Power is 0-80MPa；
（5）By the slurries filtration separation after above-mentioned grinding, filter screen is in 100-2000 mesh；
（6）Slurry after above-mentioned filtering is subjected to high-pressure homogeneous processing, homogenization pressure 70-250MPa；
（7）By the slurries filtration separation after above-mentioned grinding, filter screen is in 100-2000 mesh.
Compared with prior art, the present invention has the advantages that：
（1）Nano-cellulose obtained by the present invention has higher yield and concentration；
（2）The present invention is without spent acid, waste liquid, waste residue discharge, and ferment treatment liquid can be recycled, and be that nano-cellulose large-scale production is carried
The method of economic environmental protection is supplied；
（3）Cheap lignocellulosic can be converted into the nano-cellulose of high added value by the present invention, with good society's effect
Benefit and economic benefit.
Brief description of the drawings
Fig. 1 a are the size characteristic atomic force microscopy diagram of the gained nano-cellulose fibril of embodiment 1.
Fig. 1 b are the size characteristic atomic force microscopy diagram of the gained nano-cellulose fibril of embodiment 2.
Fig. 1 c are the size characteristic atomic force microscopy diagram of the gained nano-cellulose fibril of embodiment 3.
Embodiment
The specific implementation of the present invention is described in further detail below in conjunction with example, but embodiments of the present invention are not
It is limited to this.
The present invention is not particularly limited to the species of lignocellulosic material, source, below by taking softwood pulp as an example,
The present invention is described in further detail with example with reference to accompanying drawing.
Embodiment 1
The present invention follows these steps softwood pulp to prepare higher concentration nano-cellulose：
（1）60g needlebush slurry is subjected to defibrination process, processing disposed slurry concentration is 10wt%；
（2）By step（1）Slurry after processing is digested, first cellulose complex enzyme（Enzyme activity is 180 PFU/g）Dissolving
In deionized water, enzyme liquid is obtained；It is again 5 wt% with enzyme liquid regulation slurry concentration, enzyme dosage is 50g/kg（Relative to oven dry stock）,
PH be 5.5, temperature be 50 DEG C at digest 5h；
（3）By step（2）Slurry distillation water washing 5 times after enzymolysis, dispersed with stirring processing, rotating speed is 9000r/min, time
For 3h；
（4）By step（3）Slurry after decentralized processing carries out mechanical lapping processing, plus deionized water regulation slurry concentration is 1
Wt%, pressure is 40MPa；
（5）By step（4）Slurry after grinding is separated with the strainer filtering of 200 mesh；
（6）By step（5）Slurry after filtering carries out high-pressure homogeneous processing, and homogenization pressure is to be pressed at 80MPa, homogenizer spout
Power is more than atmospheric pressure；
（7）By step（6）Slurry after homogeneous is separated with the strainer filtering of 200 mesh, obtains nano-cellulose fibril；
As a result：The yield of gained nano-cellulose fibril be 94.1 wt%, concentration be 6.7 wt%, form as shown in Figure 1a, nanometer
The diameter of fibril is 1-4 μm in 20-60nm, length, belongs to nano-grade cellulosic fibril.
Embodiment 2
（1）60g needlebush slurry is subjected to defibrination process, processing disposed slurry concentration is 17 wt%；
（2）By step（1）Slurry after processing is digested, first cellulose complex enzyme（Enzyme activity is 180 PFU/g）Dissolving
In deionized water, enzymolysis liquid is obtained；It is again 5 wt% with enzymolysis liquid regulation slurry concentration, enzyme dosage is 50g/kg（Relative to over dry
Slurry）, pH be 5.5, temperature be 60 DEG C at digest 15h；
（3）By step（2）Slurry distillation water washing 5 times after enzymolysis, dispersed with stirring processing, rotating speed is 9000r/min, time
For 5h；
（4）To step（3）Slurry after decentralized processing carries out mechanical lapping processing, plus distilled water regulation slurry concentration is 1
Wt ‰, is circulated 4 times in the case where pressure is 40MPa；
（5）By step（4）Slurry after grinding is separated with the strainer filtering of 500 mesh；
（6）By step（5）Slurry after filtering carries out high-pressure homogeneous processing, and homogenization pressure is to be pressed at 80MPa, homogenizer spout
Power is more than atmospheric pressure；
（7）By step（6）Slurry after homogeneous is separated with the strainer filtering of 500 mesh, obtains nano-cellulose fibril；
As a result：The yield of gained nano-cellulose fibril is 80.1 wt%, and concentration is 6.8wt%, form as shown in Figure 1 b, nanometer
The diameter of fibril is 1-4 μm in 10-30nm, length, belongs to nano-grade cellulosic fibril.
Embodiment 3
（1）60g needlebush slurry is subjected to defibrination process, processing disposed slurry concentration is 15 wt%；
（2）By step（1）Slurry after processing is digested, first cellulose complex enzyme（Enzyme activity is 180 PFU/g）Dissolving
In deionized water, enzyme liquid is obtained；It is again 5 wt% with enzyme liquid regulation slurry concentration, enzyme dosage is 50g/kg（Relative to oven dry stock）,
PH be 5.5, temperature be 40 DEG C at digest 25h；
（3）By step（2）Slurry distillation water washing 5 times after enzymolysis, dispersed with stirring processing, rotating speed is 9000r/min, time
For 10h；
（4）To step（3）Slurry after decentralized processing carries out mechanical lapping processing, plus distilled water regulation slurry concentration is 1
Wt ‰, is circulated 4 times in the case where pressure is 40MPa；
（5）By step（4）Slurry after grinding is separated with the strainer filtering of 1000 mesh；
（6）By step（6）Slurry after filtering carries out high-pressure homogeneous processing, and homogenization pressure is to be pressed at 80MPa, homogenizer spout
Power is more than atmospheric pressure；
（7）By step（6）Slurry after homogeneous is separated with the strainer filtering of 1000 mesh, obtains nano-cellulose fibril；
As a result：The yield of gained nano-cellulose fibril is 60.7 wt%, and concentration is 5.3wt%, form as illustrated in figure 1 c, nanometer
The diameter of fibril is 1-4 μm in 10-30nm, length, belongs to nano-grade cellulosic fibril.
Claims (10)
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| CN201710273206.5A Pending CN106988137A (en) | 2017-04-25 | 2017-04-25 | A kind of clean preparation method of higher concentration nano-cellulose fibril |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252136A (en) * | 2018-01-16 | 2018-07-06 | 南京林业大学 | A kind of preparation method of the wooden nanofiber of wheat stalk |
| CN109090246A (en) * | 2018-08-08 | 2018-12-28 | 华南理工大学 | A method of improving dairy products viscosity |
| CN109957984A (en) * | 2017-12-14 | 2019-07-02 | 杭州富伦生态科技有限公司 | A method of using the cellulose nano-fibrous raising paper strength of enzymatic hydrolysis |
| CN110373441A (en) * | 2019-06-10 | 2019-10-25 | 浙江金昌特种纸股份有限公司 | A kind of preparation method of high length-diameter ratio nano-cellulose |
| CN110528336A (en) * | 2019-07-29 | 2019-12-03 | 华南理工大学 | A kind of high tensile high density fiberboard and its environment-friendly preparation method thereof |
| CN117461830A (en) * | 2023-11-14 | 2024-01-30 | 北京工商大学 | A kind of cellulose nanofiber and sodium alginate composite microgel with lubricating effect and preparation method thereof |
| WO2024146227A1 (en) * | 2023-01-06 | 2024-07-11 | 华南理工大学 | Method for detecting pore size distribution in micro/nano cellulose concentration process |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007091942A1 (en) * | 2006-02-08 | 2007-08-16 | Stfi-Packforsk Ab | Method for the manufacturing of microfibrillated cellulose |
| CN102472013A (en) * | 2009-07-07 | 2012-05-23 | 斯托拉恩索公司 | Method for producing microfibrillated cellulose |
| CN103103847A (en) * | 2013-01-18 | 2013-05-15 | 中南林业科技大学 | Method for preparing cellulose nanocrystals by combining biological enzymolysis and mechanical shearing |
| CN104099794A (en) * | 2013-04-09 | 2014-10-15 | 金东纸业（江苏）股份有限公司 | Preparation method for nanocellulose |
| CN104114765A (en) * | 2012-05-21 | 2014-10-22 | 王子控股株式会社 | Method for producing fine fiber, fine fiber, non-woven fabric, and fine fibrous cellulose |
| CN104603229A (en) * | 2012-07-27 | 2015-05-06 | 克鲁科姆有限公司 | Plant derived cellulose compositions for use as drilling muds |
| WO2015180844A1 (en) * | 2014-05-30 | 2015-12-03 | Borregaard As | Microfibrillated cellulose |
| CN105829605A (en) * | 2013-12-18 | 2016-08-03 | 芬兰国家技术研究中心股份公司 | Process For Producing Fibrillated Cellulose Material |
| CN105926339A (en) * | 2016-04-26 | 2016-09-07 | 天津科技大学 | Manufacturing method and film formation method for microfibrillated cellulose |
| CN106460326A (en) * | 2014-03-31 | 2017-02-22 | 芬欧汇川集团 | A method for producing fibrillated cellulose |
| CN106565907A (en) * | 2016-11-07 | 2017-04-19 | 九洲生物技术（苏州）有限公司 | Preparation method for nanocellulose enhanced bio-based nano rubber latex |
-
2017
- 2017-04-25 CN CN201710273206.5A patent/CN106988137A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007091942A1 (en) * | 2006-02-08 | 2007-08-16 | Stfi-Packforsk Ab | Method for the manufacturing of microfibrillated cellulose |
| CN102472013A (en) * | 2009-07-07 | 2012-05-23 | 斯托拉恩索公司 | Method for producing microfibrillated cellulose |
| CN104114765A (en) * | 2012-05-21 | 2014-10-22 | 王子控股株式会社 | Method for producing fine fiber, fine fiber, non-woven fabric, and fine fibrous cellulose |
| CN104603229A (en) * | 2012-07-27 | 2015-05-06 | 克鲁科姆有限公司 | Plant derived cellulose compositions for use as drilling muds |
| CN103103847A (en) * | 2013-01-18 | 2013-05-15 | 中南林业科技大学 | Method for preparing cellulose nanocrystals by combining biological enzymolysis and mechanical shearing |
| CN104099794A (en) * | 2013-04-09 | 2014-10-15 | 金东纸业（江苏）股份有限公司 | Preparation method for nanocellulose |
| CN105829605A (en) * | 2013-12-18 | 2016-08-03 | 芬兰国家技术研究中心股份公司 | Process For Producing Fibrillated Cellulose Material |
| CN106460326A (en) * | 2014-03-31 | 2017-02-22 | 芬欧汇川集团 | A method for producing fibrillated cellulose |
| WO2015180844A1 (en) * | 2014-05-30 | 2015-12-03 | Borregaard As | Microfibrillated cellulose |
| CN105926339A (en) * | 2016-04-26 | 2016-09-07 | 天津科技大学 | Manufacturing method and film formation method for microfibrillated cellulose |
| CN106565907A (en) * | 2016-11-07 | 2017-04-19 | 九洲生物技术（苏州）有限公司 | Preparation method for nanocellulose enhanced bio-based nano rubber latex |
Non-Patent Citations (1)
| Title |
|---|
| M.PAAKKO等: "Enzymatic Hydrolysis Combined with Mechanical Shearing and High-Pressure Homogenization for Nanoscale Cellulose Fibrils and Strong Gels", 《BIOMACROMOLECULES》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109957984A (en) * | 2017-12-14 | 2019-07-02 | 杭州富伦生态科技有限公司 | A method of using the cellulose nano-fibrous raising paper strength of enzymatic hydrolysis |
| CN108252136A (en) * | 2018-01-16 | 2018-07-06 | 南京林业大学 | A kind of preparation method of the wooden nanofiber of wheat stalk |
| CN109090246A (en) * | 2018-08-08 | 2018-12-28 | 华南理工大学 | A method of improving dairy products viscosity |
| CN110373441A (en) * | 2019-06-10 | 2019-10-25 | 浙江金昌特种纸股份有限公司 | A kind of preparation method of high length-diameter ratio nano-cellulose |
| CN110373441B (en) * | 2019-06-10 | 2021-06-15 | 浙江金昌特种纸股份有限公司 | Preparation method of high-length-diameter ratio nanocellulose |
| CN110528336A (en) * | 2019-07-29 | 2019-12-03 | 华南理工大学 | A kind of high tensile high density fiberboard and its environment-friendly preparation method thereof |
| WO2024146227A1 (en) * | 2023-01-06 | 2024-07-11 | 华南理工大学 | Method for detecting pore size distribution in micro/nano cellulose concentration process |
| CN117461830A (en) * | 2023-11-14 | 2024-01-30 | 北京工商大学 | A kind of cellulose nanofiber and sodium alginate composite microgel with lubricating effect and preparation method thereof |
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Application publication date: 20170728 |