CN105949514A - Method for preparing nano-crystalline cellulose of flexible screen matrix material - Google Patents
Method for preparing nano-crystalline cellulose of flexible screen matrix material Download PDFInfo
- Publication number
- CN105949514A CN105949514A CN201610284062.9A CN201610284062A CN105949514A CN 105949514 A CN105949514 A CN 105949514A CN 201610284062 A CN201610284062 A CN 201610284062A CN 105949514 A CN105949514 A CN 105949514A
- Authority
- CN
- China
- Prior art keywords
- nano
- chitosan
- suspension
- crystalline cellulose
- slurry
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
Landscapes
- Chemical & Material Sciences (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 discloses a method for preparing the nano-crystalline cellulose of a flexible screen matrix material. According to the preparation method, the bagasse unbleached pulp and the chitosan are adopted as raw materials. The bagasse unbleached pulp is dissolved and dispersed in water to prepare a suspension liquid. A mixed acid is then added in the suspension liquid. After the reaction process, a high-crystallinity suspension liquid is prepared. After the centrifugation process, solid matters are washed, and then are processed by a high-pressure ultrasonic homogenizer to obtain a nano-crystalline cellulose crystal suspension slurry. The potassium periodate is added into the suspension slurry for oxidation treatment to obtain a modified nano-crystalline cellulose suspension slurry. The chitosan material is treated with acetic acid at a low temperature to prepare a chitosan saturated solution. After the ultrasonic atomization freezing treatment, the nano-scale chitosan is prepared. The nano-scale chitosan and the modified nano-crystalline cellulose suspension slurry are subjected to the mixed crosslinking treatment to prepare the composite nano-crystalline cellulose. The two materials of the method, namely the bagasse unbleached pulp and the chitosan, are abundant, easy to obtain and good in biodegradability. Therefore, the environmental protection and the waste treatment are facilitated. The prepared composite nano-crystalline cellulose can be used for manufacturing the flexible screen matrix material.
Description
Technical field
The invention belongs to lignocellulose raw material higher value application technical field, specifically a kind of flexible screen substrate
The preparation method of nano-cellulose used by material.
Background technology
Flexible screen (OLED), have that volume is lighter, power consumption is lower compared with conventional screen, continuation of the journey time longer with
And the more high advantage of robustness.The successful volume production of flexible screen will be to a new generation's high-end smartphones and can
The development of Wearable brings far-reaching influence.According to IHS company, " flexible display technologies is pre-with market
Survey " report, it is contemplated that the global shipment amount of the year two thousand twenty flexible display will increase to 7.92 hundred million, and 2013
Year only 3,200,000.Entirety operating income will increase severely to 41,300,000,000 dollars from trivial 100,000 dollars the same period.
Screen base is the key component producing flexible screen, and the requirement to its performance is higher.Flexible OLED
It is exactly that the material of substrate and packed part is different from the maximum difference of ordinary flat OLED, the material of tradition OLED
Material is glass, at present flexible oled substrate use tens to hundreds of micron (be just coated with electrically conducting transparent
Electrode) thin film, usually polyethylene terephthalate (PET) plastic foil of tin indium oxide (ITO) film.
But the panel of plastic material is strong except drop resistant ability, can be with bending fold outside, processing technology and substrate performance do not have
Reform property is had to promote.Study at present successful OLED base material there is also efficiency, the life-span, process operability and
The deficiency of the several respects such as cost.Additionally, traditional flexible screen base material is due to need to be through superelevation in production process
Temperature heating or containing certain noxious substance, and discarded deposit in afterwards degrade under natural environment the most slow
Slowly, needing year up to ten thousand more than, subsequent recovery needs industry degraded.
The basic research of flexible screen is concentrated mainly on the performances such as efficiency and the life-span of improving device and
Find on material new, that improve.Owing to the thermal coefficient of expansion of traditional polymer plastic is higher, with
The biological laminated film substrate that nano-cellulose is main has that thermal coefficient of expansion is low, visible light transmissivity is high and soft
Property advantage functional, environment amenable is used as flexible screen base material, in organic optoelectronic field
Application in cause and pay close attention to widely.
Summary of the invention
It is an object of the invention to provide the preparation method of nano-cellulose used by a kind of flexible screen host material.
The technical scheme is that
The preparation method of nano-cellulose used by a kind of flexible screen host material, gathers with bagasse brown stock and shell
Sugar is raw material, breaks up and make suspension after first bagasse brown stock being dissolved in water, is then added thereto to mixing
Acid, makes the suspension of high-crystallinity after reaction.After Li Xin, solid content is washed, then utilize high pressure
It is processed by ultrasonic homogenizer, obtains nano cellulose crystal suspension slurry, adds high iodine in the slurry that suspends
Acid potassium carries out oxidation processes, obtains modified nanometer cellulose suspension slurry.Chitosan raw material is through acetic acid K cryogenic treatment
After make chitosan saturated solution, then prepare nano-scale chitosan through ultrasonic atomizatio freezing processing.This is received
Meter level chitosan suspends with modified nano-cellulose after slurry mixes crosslinking and makes a kind of composite nano fiber
Element.
The mixed acid of described addition is mixed by sulphuric acid and trifluoroacetic acid, and its weight ratio is 30:1～1.2.
Described chitosan raw material is 3～7 DEG C through the temperature of acetic acid K cryogenic treatment.
Advantages of the present invention:
Bagasse bleached pulp selected by the present invention and two kinds of raw material resources of chitosan are more rich and easy to get, and have good
Good biological degradability, beneficially environmental conservation and offal treatment, the composite nano fiber element of preparation can use
In making flexible screen host material.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
The preparation method of nano-cellulose used by a kind of flexible screen host material:
With bagasse brown stock and chitosan as raw material, break up after first bagasse brown stock being dissolved in water and make suspension
Liquid, is then added thereto to the mixed acid mixed by the sulphuric acid that weight ratio is 30:1 and trifluoroacetic acid,
The suspension of high-crystallinity is made after reaction.After Li Xin, solid content is washed, then utilize high pressure ultrasonic
It is processed by homogenizer, obtains nano cellulose crystal suspension slurry, adds Potassium metaperiodate. in the slurry that suspends
Carry out oxidation processes, obtain modified nanometer cellulose suspension slurry.Chitosan raw material through acetic acid under 3 DEG C of low temperature
Make chitosan saturated solution after process, then prepare nano-scale chitosan through ultrasonic atomizatio freezing processing.Will
This nano-scale chitosan suspends with modified nano-cellulose after slurry mixes crosslinking and makes a kind of composite Nano
Cellulose.
Embodiment 2
The preparation method of nano-cellulose used by a kind of flexible screen host material:
With bagasse brown stock and chitosan as raw material, break up after first bagasse brown stock being dissolved in water and make suspension
Liquid, is then added thereto to the mixed acid mixed by the sulphuric acid that weight ratio is 30:1.1 and trifluoroacetic acid,
The suspension of high-crystallinity is made after reaction.After Li Xin, solid content is washed, then utilize high pressure ultrasonic
It is processed by homogenizer, obtains nano cellulose crystal suspension slurry, adds Potassium metaperiodate. in the slurry that suspends
Carry out oxidation processes, obtain modified nanometer cellulose suspension slurry.Chitosan raw material through acetic acid under 5 DEG C of low temperature
Make chitosan saturated solution after process, then prepare nano-scale chitosan through ultrasonic atomizatio freezing processing.Will
This nano-scale chitosan suspends with modified nano-cellulose after slurry mixes crosslinking and makes a kind of composite Nano
Cellulose.
Embodiment 3
The preparation method of nano-cellulose used by a kind of flexible screen host material:
With bagasse brown stock and chitosan as raw material, break up after first bagasse brown stock being dissolved in water and make suspension
Liquid, is then added thereto to the mixed acid mixed by the sulphuric acid that weight ratio is 30:1.2 and trifluoroacetic acid,
The suspension of high-crystallinity is made after reaction.After Li Xin, solid content is washed, then utilize high pressure ultrasonic
It is processed by homogenizer, obtains nano cellulose crystal suspension slurry, adds Potassium metaperiodate. in the slurry that suspends
Carry out oxidation processes, obtain modified nanometer cellulose suspension slurry.Chitosan raw material through acetic acid under 7 DEG C of low temperature
Make chitosan saturated solution after process, then prepare nano-scale chitosan through ultrasonic atomizatio freezing processing.Will
This nano-scale chitosan suspends with modified nano-cellulose after slurry mixes crosslinking and makes a kind of composite Nano
Cellulose.
Claims (1)
1. the preparation method of nano-cellulose used by a flexible screen host material, it is characterised in that: with
Bagasse brown stock and chitosan are raw material, break up and make suspension, so after first bagasse brown stock being dissolved in water
After be added thereto to mixed acid, make the suspension of high-crystallinity after reaction, to solid content after suspension is centrifugal
Wash, then utilize the ultrasonic homogenizer of high pressure that it is processed, obtain nano cellulose crystal and suspend
Slurry, adds Potassium metaperiodate. in the slurry that suspends and carries out oxidation processes, obtains modified nanometer cellulose suspension slurry；Shell
Chitosan saturated solution made after acetic acid K cryogenic treatment by polysaccharide raw material, then through ultrasonic atomizatio freezing processing system
Obtain nano-scale chitosan；After the slurry that suspended with modified nano-cellulose by this nano-scale chitosan mixes crosslinking
Make a kind of composite nano fiber element；Described mixed acid is mixed by sulphuric acid and trifluoroacetic acid, its weight ratio
For 30:1～1.2；Described chitosan raw material is 3～7 DEG C through the temperature of acetic acid K cryogenic treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284062.9A CN105949514B (en) | 2016-05-03 | 2016-05-03 | The preparation method of nano-cellulose used in a kind of flexible screen host material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284062.9A CN105949514B (en) | 2016-05-03 | 2016-05-03 | The preparation method of nano-cellulose used in a kind of flexible screen host material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105949514A true CN105949514A (en) | 2016-09-21 |
| CN105949514B CN105949514B (en) | 2018-08-14 |
Family
ID=56913500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610284062.9A Active CN105949514B (en) | 2016-05-03 | 2016-05-03 | The preparation method of nano-cellulose used in a kind of flexible screen host material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105949514B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107141436A (en) * | 2017-07-12 | 2017-09-08 | 合肥东恒锐电子科技有限公司 | A kind of preparation method of novel electronic product flexible screen base material |
| CN108399964A (en) * | 2018-01-22 | 2018-08-14 | 浙江理工大学 | The preparation method of graphene conductive film based on nano micro crystal cellulose substrate |
| CN110591169A (en) * | 2019-09-30 | 2019-12-20 | 台州学院 | Sugarcane fiber/chitosan composite film for food packaging and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130431A (en) * | 2014-07-06 | 2014-11-05 | 东北林业大学 | Chitosan-furfural residue nano-fiber composite membrane preparation method |
| CN104558677A (en) * | 2015-02-05 | 2015-04-29 | 东北林业大学 | Preparation method of nano cellulose/chitosan composite foam |
| CN105498709A (en) * | 2015-12-16 | 2016-04-20 | 郑州大学 | High-strength dialdehyde microfibrillar cellulose/chitosan composite membrane and preparation method and application thereof |
-
2016
- 2016-05-03 CN CN201610284062.9A patent/CN105949514B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130431A (en) * | 2014-07-06 | 2014-11-05 | 东北林业大学 | Chitosan-furfural residue nano-fiber composite membrane preparation method |
| CN104558677A (en) * | 2015-02-05 | 2015-04-29 | 东北林业大学 | Preparation method of nano cellulose/chitosan composite foam |
| CN105498709A (en) * | 2015-12-16 | 2016-04-20 | 郑州大学 | High-strength dialdehyde microfibrillar cellulose/chitosan composite membrane and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| MATTI S.TOIVONEN等: "Water-Resistant,Transparent Hybrid Nanopaper by Physical Cross-Linking with Chitosan", 《BIOMACROMOLECULES》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107141436A (en) * | 2017-07-12 | 2017-09-08 | 合肥东恒锐电子科技有限公司 | A kind of preparation method of novel electronic product flexible screen base material |
| CN108399964A (en) * | 2018-01-22 | 2018-08-14 | 浙江理工大学 | The preparation method of graphene conductive film based on nano micro crystal cellulose substrate |
| CN110591169A (en) * | 2019-09-30 | 2019-12-20 | 台州学院 | Sugarcane fiber/chitosan composite film for food packaging and preparation method thereof |
| CN110591169B (en) * | 2019-09-30 | 2022-04-05 | 台州学院 | Sugarcane fiber/chitosan composite film for food packaging and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105949514B (en) | 2018-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Nie et al. | Enzymatic pretreatment for the improvement of dispersion and film properties of cellulose nanofibrils | |
| Ling et al. | Deconstruction of oriented crystalline cellulose by novel levulinic acid based deep eutectic solvents pretreatment for improved enzymatic accessibility | |
| Squinca et al. | Nanocellulose production in future biorefineries: An integrated approach using tailor-made enzymes | |
| Sun et al. | Hydrolysis of cotton fiber cellulose in formic acid | |
| Lu et al. | Extraction of cellulose nanocrystals with a high yield of 88% by simultaneous mechanochemical activation and phosphotungstic acid hydrolysis | |
| Wang et al. | Kinetics of strong acid hydrolysis of a bleached kraft pulp for producing cellulose nanocrystals (CNCs) | |
| Zhang et al. | Structure and properties of regenerated cellulose films prepared from cotton linters in NaOH/urea aqueous solution | |
| Liimatainen et al. | Enhancement of the nanofibrillation of wood cellulose through sequential periodate–chlorite oxidation | |
| Xu et al. | Preparation and characterization of spherical cellulose nanocrystals with high purity by the composite enzymolysis of pulp fibers | |
| CN110485188B (en) | Method for synchronously preparing high-purity cellulose and lignin nanoparticles from wood fibers and application of method | |
| CN105566502B (en) | The preparation method of the renewable nano-cellulose film of water resistance | |
| CN103102419A (en) | Method for preparing nano microcrystalline cellulose by hydrolyzing phyllostachys edulis fiber with cellulase | |
| CN105568730A (en) | Method for preparing renewable nano-celluloses | |
| CN105949514A (en) | Method for preparing nano-crystalline cellulose of flexible screen matrix material | |
| CN108822315B (en) | High-strength transparent hydrophobic cellulose nano-film and preparation method thereof | |
| Song et al. | Sustainable and superhydrophobic lignocellulose-based transparent films with efficient light management and self-cleaning | |
| Li et al. | Cellulase pretreatment for enhancing cold caustic extraction-based separation of hemicelluloses and cellulose from cellulosic fibers | |
| Duan et al. | Ultrafast process of microwave-assisted deep eutectic solvent to improve properties of bamboo dissolving pulp | |
| Li et al. | Kinetics and mechanism of hemicelluloses removal from cellulosic fibers during the cold caustic extraction process | |
| CN103342826B (en) | Preparation method of chitin nano-fiber/montmorillonite composite membrane material | |
| Pirich et al. | Disruptive enzyme-based strategies to isolate nanocelluloses: a review | |
| CN107287956B (en) | Method for preparing nano-cellulose by combining enzyme pretreatment with mechanical grinding | |
| CN105754123B (en) | A method of preparing flexible screen host material | |
| CN111499768A (en) | Preparation method of zwitterionic xylose residue cellulose nanocrystalline | |
| CN109754951A (en) | A kind of cellulose-graphene composite transparent conductive film and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |