CN108912231A - A kind of method that akund prepares cellulose nano microcrystalline - Google Patents
A kind of method that akund prepares cellulose nano microcrystalline Download PDFInfo
- Publication number
- CN108912231A CN108912231A CN201810727985.6A CN201810727985A CN108912231A CN 108912231 A CN108912231 A CN 108912231A CN 201810727985 A CN201810727985 A CN 201810727985A CN 108912231 A CN108912231 A CN 108912231A
- Authority
- CN
- China
- Prior art keywords
- akund
- cellulose
- nano microcrystalline
- cellulose nano
- alkali process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/02—Oxycellulose; Hydrocellulose; Cellulosehydrate, e.g. microcrystalline cellulose
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The present invention relates to a kind of methods that akund prepares cellulose nano microcrystalline, including：Using akund as raw material, pure cellulose is isolated by alkali process and acidic oxidation processing, after the quick acidolysis of pure cellulose, is added in distilled water and stirs evenly, then be centrifuged to obtain white cloudy suspension, be dialyzed to neutrality, dispersion to get.The raphioid fiber element nano microcrystalline with high length-diameter ratio, high intensity, high-crystallinity is made using acidic oxidation isolation technics and quick acidolysis technology in first passage desert plant akund of the present invention, desert plant Calotropis gigantea is set to be fully used, change from conventional fibre element as cotton prepares the traditional route of cellulose nano microcrystalline, it is made to have better prospect and more be widely applied.
Description
Technical field
The invention belongs to the preparation field of cellulose nano microcrystalline, in particular to a kind of akund prepares cellulose and receives
The method of meter Wei Jing.
Background technique
Calotropis gigantea, scientific name Calotropis, alias asthma tree, sheep leaching tree, gelsemium elegan originate in Sahara and I
State Yunnan, Sichuan, Guangxi and Guangdong and wait areas.It is distributed in India, Sri Lanka, Burma, Vietnam and Malaysia etc., it is raw
Be longer than low altitude area endroit, wilderness, desert and seashore.
Calotropis gigantea is ultra-fine natural plant fibre, and wherein akund lignin quality score is 8%~9%, fiber
Element about 64%, hemicellulose is about 20%, and wax is 2%~2.5%, and pectin is about 3%, and ash content is 1.2%~1.8%.
Different from cotton fiber, Calotropis gigantea is grown in desert region, and fiber wax and pectin content are high, and content of lignin is high, cellulose
Separation is difficult, up to the present, receives it has not been found that separating cellulose well from Calotropis gigantea well and preparing cellulose
The method of meter Wei Jing comprehensively utilize a large amount of desert plant Calotropis giganteas cannot effectively.
First passage desert plant akund of the present invention uses acidic oxidation isolation technics and quick acidolysis technology system
There must be the raphioid fiber element nano microcrystalline of high length-diameter ratio, high intensity, high-crystallinity, desert plant Calotropis gigantea is made to obtain abundant benefit
With changing from conventional fibre element as cotton prepares the traditional route of cellulose nano microcrystalline, it made to have better prospect and more
It is widely applied.Obtaining Calotropis gigantea has high draw ratio, can be in preparing the high-technology fields such as high-performance nano material
It is applied.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of method that akund prepares cellulose nano microcrystalline,
First passage desert plant akund using acidic oxidation isolation technics and quick acidolysis technology be made with high length-diameter ratio,
High-intensitive, high-crystallinity raphioid fiber element nano microcrystalline, overcomes and is only with conventional fibre element such as cotton in the prior art
Raw material prepares the traditional route of cellulose nano microcrystalline.Inventor is using desert plant akund as raw material, using acid oxygen
The raphioid fiber element nano microcrystalline for changing separation and the acquisition of quick acidolysis technology has high length-diameter ratio, high intensity, high-crystallinity.
The method that a kind of akund of the invention prepares cellulose nano microcrystalline, step include：
(1) akund is obtained into cellulose by pre-treatment；
(2) cellulose and acidic aqueous solution are mixed, is quickly stirred to react, obtains mixed colloidal solution, water is then added
In, then be centrifuged to obtain suspension, dialysis to neutrality, dispersion obtains cellulose nano microcrystalline.
The preferred embodiment of the above method is as follows：
In the step (1) akund carry out pre-treatment be specially：Alkali process is carried out after akund is crushed,
Then akund after obtaining alkali process carries out acidic oxidation, cellulose is separated, then is freeze-dried, and crushes, obtains
Villous pure cellulose；
Akund is in the step (1)：Using desert plant Calotropis gigantea (Calotropis gigantea L.),
Or white flower Calotropis gigantea (Calotropis procera L.), both of which can be with.Its fiber is stripped out, nature biotechnology matter is sufficiently sharp
With.
Akund is powdered akund after crushing.
Alkali process is specially：It is 20~60g by akund and lye mass volume ratio：1L, in 70-90 DEG C of condition
Under, handle 1-3h.
The lye is the sodium hydrate aqueous solution that mass percentage concentration is 4%-6%.
Acidic oxidation is specially：By after alkali process akund and oxidizing acidic solution mass volume ratio be 20~
60g：1L handles 1~3h under the conditions of 80-100 DEG C.
The oxidizing acidic solution is hydrogen peroxide-acetic acid solution.
Hydrogen peroxide-the acetic acid solution is that hydrogenperoxide steam generator (concentration expressed in percentage by volume 30%) and acetic acid solution press body
Product ratio 1：0.5~2 prepares.
Akund freeze-drying in step (1) after alkali process and acidic oxidation, obtained solid crush to obtain again
Villous pure cellulose.
Acidic aqueous solution is the aqueous sulfuric acid that mass percentage concentration is 60%~65% in the step (2).
Reaction temperature is 20-60 DEG C, time 10-30min in the step (2), the strict control reaction time.
Mixed colloidal solution is added in distilled water and stirs evenly in step (2), is washed repeatedly with deionized water, until upper layer
Liquid is muddy, collects upper layer white opacity liquid.
It is separated into the step (2)：3~10min is ultrasonically treated under the power of 100W~300W.
It dialyses and is ultrasonically treated 3~10min under the power of 100W~300W to neutral cellulose nano microcrystalline suspension,
Obtain the cellulose nano microcrystalline of good dispersion.
A kind of cellulose nano microcrystalline of above method preparation of the invention, cellulose nano microcrystalline pattern are needle-shaped, fibre
Plain nano microcrystalline length is tieed up within the scope of 150~300nm of range, 10~25nm of width range.
A kind of cellulose nano microcrystalline from akund of the invention, which is characterized in that the nano microcrystalline
Infrared absorption peak is 1058cm-1。
Beneficial effect
The present invention is using akund as raw material, using the raphioid fiber of acidic oxidation separation and the acquisition of quick acidolysis technology
Plain nano microcrystalline has the raphioid fiber element nano microcrystalline of high length-diameter ratio, high intensity, high-crystallinity, has expanded Calotropis gigantea fibre significantly
The application range of dimension.
Detailed description of the invention
Fig. 1 is the transmission electron microscope picture of cellulose nano microcrystalline prepared by embodiment 2；
Fig. 2 is the smashed scanning electron microscope (SEM) photograph of akund in embodiment 1；Wherein illustration is the ox horn for amplifying 2000 times
Melon fiber；
Fig. 3 is the scanning for the cellulose that akund obtains after alkali process and acidic oxidation processing in embodiment 2
Electron microscope；Wherein illustration is that wherein illustration is the purifying akund for amplifying 2000 times；
Fig. 4 is the grain size distribution of cellulose nano microcrystalline prepared by embodiment 2；Wherein a distribution of lengths, b width distribution；
Fig. 5 is the infrared spectrogram of akund before and after the processing in embodiment 3.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.The Calotropis gigantea used in embodiment is Calotropis gigantea (Calotropis gigantea L.).
Embodiment 1
(1) alkali process of akund
Smashed akund 15g is weighed, is added in the sodium hydrate aqueous solution that 900mL mass fraction is 4%,
1h is reacted under the conditions of 90 DEG C, by filtering after having reacted, akund of the washing after alkali process is at neutrality, after drying
It is spare.
(2) the acidic oxidation processing of akund
Akund 7.5g after weighing alkali process, being added to 450mL volume ratio is 1：0.5 30% hydrogen peroxide and
In acetic acid mixed solution, 3h is reacted under the conditions of 80 DEG C, by filtering after having reacted, washing is until acidic oxidation treated ox
Angle melon obtains villous pure cellulose at neutrality, freeze-drying, crushing.
(3) pure cellulose prepares cellulose nano microcrystalline
Pure cellulose 10g is weighed, is slowly added into the aqueous sulfuric acid that 150mL mass fraction is 60%, in 60 DEG C of items
Mixed colloidal solution is obtained after reacting 1h under part, then mixed colloidal solution is added in distilled water and dilutes 10 times, is centrifuged,
Centrifugal rotational speed control is in 9000r/min, centrifugation time 5min, until supernatant liquid is muddy, collects white opacity and suspends
Liquid, after dialysis 4~7 days, obtained cellulose nano microcrystalline suspension ultrasound 10min under the power of 100W be can be obtained point
Dissipate the good cellulose nano microcrystalline suspension of property.Yield 33.7%.Diameter is at 12-16 nanometers, and length is on a 180-300 nanometers of left sides
It is right.
Embodiment 2
(1) alkali process of akund
Smashed akund 15g is weighed, is added in the sodium hydrate aqueous solution that 750mL mass fraction is 5%,
2h is reacted under the conditions of 80 DEG C, by filtering after having reacted, akund of the washing after alkali process is at neutrality, after drying
It is spare.
(2) the acidic oxidation processing of akund
Akund 7.5g after weighing alkali process, being added to 375mL volume ratio is 1：1 30% hydrogen peroxide and second
In sour mixed solution, 2h is reacted under the conditions of 90 DEG C, by filtering after having reacted, washing is until acidic oxidation treated ox horn
Melon obtains villous pure cellulose at neutrality, freeze-drying, crushing.
(3) pure cellulose prepares cellulose nano microcrystalline
Pure cellulose 10g is weighed, is slowly added into the aqueous sulfuric acid that 100mL mass fraction is 62%, in 45 DEG C of items
The mixed colloidal solution obtained after 25min is reacted under part, then mixed colloidal solution is added in distilled water and dilutes 10 times, from
The heart, centrifugal rotational speed control is in 9000r/min, centrifugation time 5min, and until supernatant liquid is muddy, it is outstanding to collect white opacity
Supernatant liquid, after dialysis 4~7 days, obtained cellulose nano microcrystalline suspension ultrasound 5min under the power of 100W be can be obtained point
Dissipate the good cellulose nano microcrystalline suspension of property.Yield 32.9%.Diameter is at 12-18 nanometers, and length is on a 180-280 nanometers of left sides
It is right.
Embodiment 3
(1) alkali process of akund
Weigh smashed akund 15g, be added to 600mL mass fraction be 5% sodium hydrate aqueous solution in,
2h is reacted under the conditions of 80 DEG C, by filtering after having reacted, washing is until the akund after alkali process dries standby at neutrality
With.
(2) the acidic oxidation processing of akund
Akund 7.5g after weighing alkali process, being added to 300mL volume ratio is 1：1 30% hydrogen peroxide and
In acetic acid mixed solution, 2h is reacted under the conditions of 90 DEG C, by filtering after having reacted, washing is until acidic oxidation treated ox
Angle melon obtains villous pure cellulose at neutrality, freeze-drying, crushing.
(3) pure cellulose prepares cellulose nano microcrystalline
Pure cellulose 10g is weighed, is slowly added into the aqueous sulfuric acid that 120mL mass fraction is 60%, in 45 DEG C of items
The mixed colloidal solution obtained after 35min is reacted under part, then mixed colloidal solution is added in distilled water and dilutes 10 times, is carried out
Centrifugation, centrifugal rotational speed control is in 9000r/min, centrifugation time 5min, until supernatant liquid is muddy, collects white opacity
Suspension, after dialysis 4~7 days, obtained cellulose nano microcrystalline suspension ultrasound 5min under the power of 200W be can be obtained
The cellulose nano microcrystalline suspension of favorable dispersibility.Yield 35.2%.Diameter is at 12-20 nanometers, and length is at 180-260 nanometers
Left and right.
Embodiment 4
(1) alkali process of akund
Weigh smashed akund 15g, be added to 300mL mass fraction be 6% sodium hydrate aqueous solution in,
3h is reacted under the conditions of 70 DEG C, by filtering after having reacted, akund of the washing after alkali process is at neutrality, after drying
It is spare.
(2) the acidic oxidation processing of akund
Akund 7.5g after weighing alkali process, being added to 150mL volume ratio is 1：2 30% hydrogen peroxide and
In acetic acid mixed solution, 1h is reacted under the conditions of 90 DEG C, by filtering after having reacted, washing is until acidic oxidation treated ox
Angle melon is at neutrality and has certain water, then by freeze-drying, crushing obtains villous pure cellulose.
(3) pure cellulose prepares cellulose nano microcrystalline
Pure cellulose 10g is weighed, is slowly added into the aqueous sulfuric acid that 100mL mass fraction is 64%, in 20 DEG C of items
The mixed colloidal solution obtained after 20min is reacted under part, then mixed colloidal solution is added in distilled water and dilutes 10 times, is carried out
Centrifugation, centrifugal rotational speed control is in 9000r/min, centrifugation time 5min, until supernatant liquid is muddy, collects white opacity
Suspension, after dialysis 4~7 days, obtained cellulose nano microcrystalline suspension ultrasound 3min under the power of 300W be can be obtained
The cellulose nano microcrystalline suspension of favorable dispersibility.Yield 32.5%.Diameter is at 12-18 nanometers, and length is at 180-280 nanometers
Left and right.
Using the scanning electron microscope (SEM) photograph of smashed akund in conventional method measurement embodiment 1, as shown in Figure 2.It surveys
It tries by the scanning electron microscope (SEM) photograph of alkali process and acidic oxidation treated akund in embodiment 2, as shown in Figure 3.As a result
It was found that the hollow structure of akund is obviously destroyed after alkali process and acidic oxidation processing, become laminated structure.
The transmission electron microscope of cellulose nano microcrystalline obtained in embodiment 2 is measured, as a result as shown in Figure 1.It can from Fig. 1
Cellulose nano microcrystalline is in acicular pattern out.It is as shown in Figure 4 by calculating particle size results again.Calotropis gigantea is utilized from Fig. 4
The cellulose nano microcrystalline length of fiber preparation is in 150~300nm, and width is in 12~25nm.
Using the infrared spectrogram of the akund obtained in conventional method measurement embodiment 3 before and after the processing, as a result
As shown in Figure 5.As can be seen from Figure 5 there is 3400cm in the spectrogram of sample-1O-H is special in neighbouring cellulose molecular chain
Levy stretching vibration absworption peak；2900cm-1The stretching vibration peak of C-H in neighbouring cellulose molecular chain；1058cm-1Neighbouring fibre
The stretching vibration absworption peak of C-O-C in plain macromolecular is tieed up, these are all the characteristic absorption peaks of cellulose.And it can be seen that and pass through alkali
After processing and acidic oxidation processing, 1734cm-1And 1502cm-1Neighbouring lignin characteristic peak disappears, and illustrates wooden after treatment
Quality is removed.
Claims (10)
1. a kind of method that akund prepares cellulose nano microcrystalline, step include：
(1) akund pre-treatment is obtained into cellulose；
(2) cellulose and acidic aqueous solution are mixed, reaction obtains mixed colloidal solution, is then added to the water, then is centrifuged
Isolated suspension, dialysis to neutrality, dispersion obtain cellulose nano microcrystalline.
2. the method according to claim 1, wherein pre-treatment is specially in the step (1)：By Calotropis gigantea fibre
Dimension carries out alkali process after crushing, then the akund after obtaining alkali process carries out acidic oxidation, then is freeze-dried, and crushes,
Obtain cellulose.
3. according to the method described in claim 2, it is characterized in that, alkali process is specially：By akund and lye quality
Volume ratio is 20~60g：1L handles 1-3h under the conditions of 70-90 DEG C.
4. according to the method described in claim 2, it is characterized in that, acidic oxidation is specially：It is fine by the Calotropis gigantea after alkali process
Peacekeeping oxidizing acidic solution mass volume ratio is 20~60g：1L handles 1~3h under the conditions of 80-100 DEG C.
5. the method according to claim 1, wherein acidic aqueous solution is that quality percentage is dense in the step (2)
The aqueous sulfuric acid that degree is 60%~70%.
6. the method according to claim 1, wherein in the step (2) cellulose and pickling aqueous solution matter
Amount volume ratio is 1g:10~15mL.
7. the method according to claim 1, wherein in the step (2) reaction temperature be 20-60 DEG C, the time
For 20-60min.
8. a kind of cellulose nano microcrystalline of claim 1 the method preparation.
9. cellulose nano microcrystalline according to claim 8, which is characterized in that 150~300nm of its length range, width
12~25nm of range；Alternatively, average length, within the scope of 226.25 ± 75.42nm, mean breadth is in 18.78 ± 6.62nm range
It is interior.
10. a kind of cellulose nano microcrystalline from akund, which is characterized in that the infrared absorption peak of the nano microcrystalline
1058cm-1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810727985.6A CN108912231A (en) | 2018-07-05 | 2018-07-05 | A kind of method that akund prepares cellulose nano microcrystalline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810727985.6A CN108912231A (en) | 2018-07-05 | 2018-07-05 | A kind of method that akund prepares cellulose nano microcrystalline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108912231A true CN108912231A (en) | 2018-11-30 |
Family
ID=64424124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810727985.6A Pending CN108912231A (en) | 2018-07-05 | 2018-07-05 | A kind of method that akund prepares cellulose nano microcrystalline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108912231A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101250A (en) * | 2020-01-11 | 2020-05-05 | 南通纺织丝绸产业技术研究院 | Preparation method of multifunctional mudar floss blended yarn |
| CN111480852A (en) * | 2019-01-29 | 2020-08-04 | 丰益(上海)生物技术研发中心有限公司 | Rice bran soluble dietary fiber, preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005215846A1 (en) * | 2004-02-23 | 2005-09-01 | Caiteng Zhang | A solution of metal-polymer chelate(s) and applications thereof |
| CN105332286A (en) * | 2015-10-21 | 2016-02-17 | 东华大学 | Method for improving calotropis gigantea fiber elastic modulus |
| CN106632700A (en) * | 2016-12-11 | 2017-05-10 | 闫博文 | Preparation method of stable composite microcrystalline cellulose |
| CN107522789A (en) * | 2017-09-05 | 2017-12-29 | 广西师范学院 | The preparation method of banana cellulose nanofibers g-polycaprolactone composite |
-
2018
- 2018-07-05 CN CN201810727985.6A patent/CN108912231A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005215846A1 (en) * | 2004-02-23 | 2005-09-01 | Caiteng Zhang | A solution of metal-polymer chelate(s) and applications thereof |
| CN105332286A (en) * | 2015-10-21 | 2016-02-17 | 东华大学 | Method for improving calotropis gigantea fiber elastic modulus |
| CN106632700A (en) * | 2016-12-11 | 2017-05-10 | 闫博文 | Preparation method of stable composite microcrystalline cellulose |
| CN107522789A (en) * | 2017-09-05 | 2017-12-29 | 广西师范学院 | The preparation method of banana cellulose nanofibers g-polycaprolactone composite |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111480852A (en) * | 2019-01-29 | 2020-08-04 | 丰益(上海)生物技术研发中心有限公司 | Rice bran soluble dietary fiber, preparation method and application thereof |
| CN111480852B (en) * | 2019-01-29 | 2024-04-05 | 丰益(上海)生物技术研发中心有限公司 | A testa oryzae soluble dietary fiber, its preparation method and application |
| CN111101250A (en) * | 2020-01-11 | 2020-05-05 | 南通纺织丝绸产业技术研究院 | Preparation method of multifunctional mudar floss blended yarn |
| CN111101250B (en) * | 2020-01-11 | 2021-05-28 | 南通纺织丝绸产业技术研究院 | Preparation method of multifunctional mudar floss blended yarn |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Feng et al. | Characteristics and environmentally friendly extraction of cellulose nanofibrils from sugarcane bagasse | |
| Kargarzadeh et al. | Effects of hydrolysis conditions on the morphology, crystallinity, and thermal stability of cellulose nanocrystals extracted from kenaf bast fibers | |
| Al-Dulaimi et al. | Isolation and characterization of nanocrystalline cellulose from totally chlorine free oil palm empty fruit bunch pulp | |
| Barbash et al. | Preparation and characterization of nanocellulose obtained by TEMPO-mediated oxidation of organosolv pulp from reed stalks | |
| Lu et al. | A mechanochemical approach to manufacturing bamboo cellulose nanocrystals | |
| CN107345372B (en) | A method of it is prepared based on biomass material cellulose nano-fibrous | |
| CN102690358B (en) | Cellulose nanocrystal suspension and preparation method thereof | |
| Islam et al. | Effect of low pressure alkaline delignification process on the production of nanocrystalline cellulose from rice husk | |
| Cao et al. | Combined bleaching and hydrolysis for isolation of cellulose nanofibrils from waste sackcloth | |
| CN103387686B (en) | Method for preparing micro/nanofiber graphene composite membrane from recycled corrugated paper | |
| CN104452436A (en) | Nano-cellulose dispersing agent as well as preparation method and application of nano-cellulose dispersing agent | |
| CN111116762B (en) | Preparation method of hydrophobic cellulose nanocrystals | |
| CN108912231A (en) | A kind of method that akund prepares cellulose nano microcrystalline | |
| CN114025619A (en) | Natural composite material derived from seaweed and method for producing the same | |
| KR101551850B1 (en) | Manufacturing method porous paper filter and porous paper filter manufactured by the method | |
| CN108221438A (en) | A kind of preparation method of bleached eucalyptus pulp nano-cellulose | |
| CN106967176A (en) | A kind of nanocrystalline beam of modified bacteria cellulose and preparation method thereof | |
| Liu et al. | Effects of size and dispersity of microcrystalline celluloses on size, structure and stability of nanocrystalline celluloses extracted by acid hydrolysis | |
| Rubleva et al. | Production of cellulose nanocrystals by hydrolysis in mixture of hydrochloric and nitric acids | |
| Sihag et al. | Extraction and characterization of nanocellulose from wheat straw: facile approach | |
| CN109970874A (en) | Improve Cellulose nanocrystal redispersibility, the end modified method of stability of suspension | |
| Chen et al. | Preparation of peanut shell cellulose nanofibrils and their superhydrophobic aerogels and their application on cotton fabrics | |
| CN108976303A (en) | A kind of method that solid acid catalysis sand milling prepares cellulose nano microcrystalline | |
| CN109134942A (en) | A kind of transparent nanofiber element anti-bacteria paper and preparation method thereof | |
| EP3202978A1 (en) | Method for producing nanocrystalline cellulose from linter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181130 |