CN108505209A - A kind of regenerated cellulose film and preparation method thereof - Google Patents
A kind of regenerated cellulose film and preparation method thereof Download PDFInfo
- Publication number
- CN108505209A CN108505209A CN201810179066.XA CN201810179066A CN108505209A CN 108505209 A CN108505209 A CN 108505209A CN 201810179066 A CN201810179066 A CN 201810179066A CN 108505209 A CN108505209 A CN 108505209A
- Authority
- CN
- China
- Prior art keywords
- regenerated cellulose
- cellulose film
- liquid
- ion
- temperature
- 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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
- D04H1/4258—Regenerated cellulose series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/724—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged forming webs during fibre formation, e.g. flash-spinning
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/06—Vegetable or imitation parchment; Glassine paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The present invention relates to a kind of regenerated cellulose film and preparation method thereof, the preparation method includes the following steps：1) corn stalk fiber element pulp is fully dissolved in ion liquid solvent, to get regenerated cellulose film liquid after ultrasonic deaeration；2) the regenerated cellulose film liquid is laid with to waiting on overlay film object, uses immersion precipitation phase conversion method that regenerated cellulose film is made.Regenerated cellulose film of the present invention, the regenerated cellulose film prepared compared to traditional viscose：Belong to agricultural waste utilization on raw material, solvent green, energy consumption are smaller in whole preparation process, and sulfur content is zero in the final product, can be widely used for the fields such as non-moisture-proof food glassine paper.
Description
Technical field
The invention belongs to cellulose separation and the methods of film；Regenerated cellulose film and its preparation are prepared more particularly to a kind of
Method.
Background technology
With the increasingly reduction of petroleum resources, continuously extensive pass of the soaring and people to environmental problem of oil price
Note, there is lack of raw materials and environmental problem in order to solve, and people are gradually transferred to eye on tellurian renewable resource.Wooden fibre
The plain resource of dimension has become an ideal substitute of fossil resources.Lignocellulosic material main component be cellulose (35%~
50%), hemicellulose (20%~40%) and lignin (15%~25%).In lignocellulosic material, these three are main
Ingredient constitutes the support skeleton of plant, and wherein cellulose forms microfibre, constitutes the mesh skeleton of fiber finer cell wall, and partly
Cellulose and lignin, which are then connected with covalent bond, to be filled between fiber and microfibre, and a kind of similar reinforced concrete of formation interlocks
" concrete structure ".And for the needs of research or application, it is often necessary to be detached to the main component of lignocellulosic
It recycles.
Plant fiber is a kind of natural polymer, grows and is present in a large amount of green plantss, is a kind of inexhaustible, use
Inexhaustible resource.Potential advantages of the plant fiber for synthetic material increasingly attract much attention, it is cheap, close
It spends small, there is higher elasticity modulus, it is close with inorfil, and its biological degradability and recyclability are most outstanding excellent
Point is that other materials are incomparable.
For corn as China staple crops, plantation amount is very big, and the amount of the maize straw of association is also considerable therewith.
It is estimated that the maize straw that China generates every year is more than 200,000,000 tons, and since the utilization rates such as deep processing are low, wherein most corn stalk
Stalk produces environment and is seriously affected by burning disposal.It is well known that maize straw mainly by cellulose, hemicellulose and
Lignin forms, and these ingredients have significant application value in many fields.It is utilized as can stalk is classified separation, it can be very big
Its added value is promoted, not only improves environment protection, and can increase farmers' income.
Regenerated cellulose film (Regenerated Cellulose Film) be raw material with cellulose made of, structure is
The regenerated cellulose film of cellulose II.Current 90% or more fiber enterprise is still based on traditional prezenta film.But because
Viscose process produces the shortcomings of cellulose membrane technique is tediously long, and investment is huge, seriously polluted, and energy consumption is high, makes prezenta film
Production be subject to certain restrictions.Viscose process greatest drawback is exactly to use CS2, and CS is released in process of production2And H2S etc. has
Poisonous gas and zinc-containing water, pollute air and water, and ecological environment is made to be destroyed.Novel organic solvent NMMO is good
It solves the pollution problem in regenerated cellulose film cellulose fiber production process, has greatly facilitated the development of cellulose fibre production
But NMMO methods the shortcomings that also having oneself.First, NMMO preparation processes are more complicated, so solvent price is relatively expensive.Secondly,
NMMO is heated during recycling to decompose a part.In addition, NMMO is easy oxidation, this adds increased solvent transport cost and
Energy consumption.
Invention content
The purpose of the present invention is to provide one kind using corn stalk fiber element pulp as raw material, prepares regenerated cellulose film
Method the described method comprises the following steps：
1) corn stalk fiber element pulp is fully dissolved in ion liquid solvent, it is fine to get regeneration after ultrasonic deaeration
The plain film liquid of dimension.
2) the regenerated cellulose film liquid is laid with to waiting on overlay film object, is made again using immersion precipitation phase conversion method
Raw cellulose membrane.
Present invention further propose that, content of cellulose is not less than 82% in the corn stalk fiber element pulp, lignin
Content is not less than 1%；
Wherein, the content of chemical cellulose is not less than 80% in the cellulose.
Present invention further propose that, the cation of the ionic liquid in the ion liquid solvent be alkyl imidazole from
It is one or two kinds of in son, alkyl quaternary ammonium ion；
The anion of the ion liquid solvent intermediate ion liquid is selected from Cl-、CH3COO-、CF3COO-、CF3SO3 -、BF4 -、
(CF3SO2)3C-、PF6 -、(CF3SO2)2N-In it is one or more.
Preferably, cation is alkyl imidazolium ion, anion CF3COO in the ion liquid solvent-。
Preferably, the mass ratio of the ionic liquid and the ion liquid solvent is 1:2~9；
Solvent in the ion liquid solvent selects the solvent of soluble ion liquid, is not limited to N, N- dimethyl methyls
It is one or more in amide, DMAC N,N' dimethyl acetamide, N-Methyl pyrrolidone, dimethyl sulfoxide (DMSO).
Present invention further propose that, the mass ratio of the corn stalk fiber element pulp and the ion liquid solvent is
1:10~20.
Present invention further propose that, the dissolving of the corn stalk fiber element pulp is specially：By corn stalk fiber
After plain pulp is dissolved in ion liquid solvent, at a temperature of 30~70 DEG C, with the rate of 400~800r/min stirring 4~
12h。
Preferably, the dissolving of the corn stalk fiber element pulp is specially：By corn stalk fiber element pulp be dissolved in from
After in sub- liquid flux, at a temperature of 50~60 DEG C, 6~10h is stirred with the rate of 400~600r/min.
Present invention further propose that, the temperature of the ultrasound deaeration is 35~65 DEG C, and power is 150~250W, time
For 18~36h；
Preferably, the temperature of the ultrasonic deaeration is 50~60 DEG C, and power is 180~220W, and the time is 18~24.
Present invention further propose that the immersion precipitation phase conversion method is specially：The regenerated cellulose film liquid is equal
It is even to be laid with to after on overlay film object, it places in the water at a temperature of 20~30 DEG C, after submerging 8~12min, reuses 20~30
DEG C flowing 30~60h of water washing, it is dry to get regenerated cellulose film.
Preferably, the regenerated cellulose film liquid is uniformly laid with to after on overlay film object, places 23~27 DEG C of temperature
In deionized water under degree, after submerging 8~12min, 22~27 DEG C of flowing 30~60h of water washing is reused, it is dry to get again
Raw cellulose membrane.
It is described to wait for that overlay film object be the smooth horizontal plate face for being not easy to be corroded by cosolvent, and not influencing casting solution property.
Preferably glass plate, stainless steel plate.The overlay film effect of regenerated cellulose film of the present invention on a glass is optimal.
Present invention further propose that, during the immersion precipitation phase conversion method prepares regenerated cellulose film, do
Drying method is dried for drum dryer, and temperature is 100-130 DEG C.
The present invention provides a kind of preferred embodiment, the described method comprises the following steps：
1) after corn stalk fiber element pulp being dissolved in ion liquid solvent, at a temperature of 50~60 DEG C, with 400~
The rate of 600r/min stirs 6~10h；At a temperature of being placed in 50~60 DEG C again, with the power ultrasonic deaeration 18 of 180~220W~
For 24 hours to get regenerated cellulose film liquid；
Wherein, the mass ratio of the ionic liquid and the ion liquid solvent is 1:2~9；The ion liquid solvent
Middle cation is alkyl imidazolium ion, anion CF3COO-；
2) the regenerated cellulose film liquid is laid with to glass plate, places the deionized water at a temperature of 23~27 DEG C
In, after submerging 8~12min, 22~27 DEG C of flowing 30~60h of water washing is reused, it is dry to get regenerated cellulose film.
Another object of the present invention is to provide regenerated cellulose film made from any of the above-described the method.
Preferably, the thickness of the regenerated cellulose film is 10~30 μm.
Third object of the present invention is, application of the regenerated cellulose film on moisture-proof food glassine paper.
Beneficial effects of the present invention：
Regenerated cellulose film prepared by corn stalk fiber element pulp provided by the present invention, uses maize straw for raw material
It is prepared by solvent method, wherein raw material corn stalk fiber element, which is a kind of renewable resource of rich reserves, has green, environmental protection
Etc. advantages.
The mixed solvent for quaternary ammonium salt/polar non-solute that this method uses can dissolve fiber at a lower temperature
Element, preparation condition is mild, simple flow.Gained regenerated cellulose film properties are stablized, and quality is uniform.
Regenerated cellulose film of the present invention, the regenerated cellulose film prepared compared to traditional viscose：Belong on raw material
In agricultural waste utilization, solvent green, energy consumption are smaller in whole preparation process, and sulfur content is in the final product
Zero, it can be widely used for the fields such as non-moisture-proof food glassine paper.
Specific implementation mode
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Jilin Chemical Fiber Group Co., Ltd. is purchased from using corn stalk fiber element pulp in following examples.
Embodiment 1
A kind of method of regenerated cellulose film, includes the following steps：
1) 8g corn stalk fiber element pulps are taken to be dissolved in 92g ion liquid solvents, at 55 DEG C, with 500r/min rates
After stirring 8h, with 200w power, ultrasonic deaeration is for 24 hours to get regenerated cellulose film liquid at a temperature of 55 DEG C；
Wherein, the mass ratio of the ionic liquid and the ion liquid solvent is 1:7~9；The ion liquid solvent
Middle cation is alkyl imidazolium ion, anion CF3COO-；
2) knifing machine is used at ambient temperature, uniformly paving is prolonged on glass plate by the regenerated cellulose film liquid, then is put
It sets after submerging 10min in 25 DEG C of deionized water, 48h is washed in 25 DEG C of circulating water, 25min is dried at 120 DEG C, obtains
Regenerated cellulose film.
After testing, in the present embodiment, regenerated cellulose film liquid, lignin content 1.12%, alpha-cellulose is made in step 1)
Content is 82%, content of cellulose 83.65%；The total amount that three accounts for regenerated cellulose film liquid is 8%.
Regenerated cellulose film in step 2) takes three parts, is tested respectively, as a result as follows：
Table 1
| Serial number | Pulling force/(N/15mm) | Extension at break/% | Thickness/mm | Intensity/Mpa |
| 1 | 0.042 | 4.081 | 0.014 | 44.48 |
| 2 | 0.048 | 5.982 | 0.016 | 45.13 |
| 3 | 0.045 | 4.57 | 0.015 | 44.78 |
| Average value | 0.045 | 4.878 | 0.015 | 44.78 |
Embodiment 2
A kind of method of regenerated cellulose film, includes the following steps：
1) 6g corn stalk fiber element pulps are dissolved in 94g ion liquid solvents, at 55 DEG C, are stirred with 500r/min rates
8h is mixed, with 200w power, at a temperature of 55 DEG C, ultrasonic deaeration is for 24 hours to get regenerated cellulose film liquid；
Wherein, the mass ratio of the ionic liquid and the ion liquid solvent is 1:2~4；The ion liquid solvent
Middle cation is alkyl imidazolium ion, anion CF3COO-；
2) using knifing machine at room temperature by the regenerated cellulose film liquid uniformly paving prolong on glass plate, gone at 25 DEG C from
After submerging 10min in sub- water, immersion precipitation inversion of phases is completed, 48h is washed in 25 DEG C of circulating water, is dried at 120 DEG C
25min obtains regenerated cellulose film.
After testing, in the present embodiment, regenerated cellulose film liquid, lignin content 1.12%, alpha-cellulose is made in step 1)
Content is 82%, content of cellulose 83.65%；The total amount that three accounts for regenerated cellulose film liquid is 6%.
Regenerated cellulose film in step 2) takes three parts, is tested respectively, as a result as follows：
Table 2
Although above having used general explanation, specific implementation mode and experiment, the present invention is made to retouch in detail
It states, but on the basis of the present invention, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed
Range.
Claims (10)
1. a kind of method preparing regenerated cellulose film, which is characterized in that include the following steps：
1) corn stalk fiber element pulp is fully dissolved in ion liquid solvent, to get regenerated cellulose after ultrasonic deaeration
Film liquid；
2) the regenerated cellulose film liquid is laid with to waiting on overlay film object, uses immersion precipitation phase conversion method that regeneration is made fine
The plain film of dimension.
2. according to the method described in claim 1, it is characterized in that, the cation of the ion liquid solvent intermediate ion liquid is
It is one or two kinds of in alkyl imidazolium ion, alkyl quaternary ammonium ion；
And/or the anion of the ion liquid solvent intermediate ion liquid is selected from Cl-、CH3COO-、CF3COO-、CF3SO3 -、BF4 -、
(CF3SO2)3C-、PF6 -、(CF3SO2)2N-In it is one or more.
3. method according to claim 1 or 2, which is characterized in that the corn stalk fiber element pulp and the ion
The mass ratio of liquid flux is 1:10~20；
And/or the mass ratio of the ionic liquid and the ion liquid solvent is 1:2~9.
4. according to any method of claims 1 to 3, which is characterized in that the dissolving of the corn stalk fiber element pulp
Specially：After corn stalk fiber element pulp is dissolved in ion liquid solvent, at a temperature of 30~70 DEG C, with 400~
The rate of 800r/min stirs 4~12h；
Preferably, the dissolving of the corn stalk fiber element pulp is specially：Corn stalk fiber element pulp is dissolved in ionic liquid
After in body solvent, at a temperature of 50~60 DEG C, 6~10h is stirred with the rate of 400~600r/min.
5. method according to any one of claims 1 to 4, which is characterized in that the temperature of the ultrasound deaeration is 35~65 DEG C,
Power is 150~250W, and the time is 18~36h；
Preferably, the temperature of the ultrasonic deaeration is 50~60 DEG C, and power is 180~220W, the time is 18~for 24 hours.
6. any method of Claims 1 to 5, which is characterized in that the immersion precipitation phase conversion method is specially：It will
The regenerated cellulose film liquid is uniformly laid with to after on overlay film object, is placed in the water at a temperature of 20~30 DEG C, is immersed in 8
After~12min, 20~30 DEG C of flowing 30~60h of water washing is reused, it is dry to get regenerated cellulose film；
Preferably, the regenerated cellulose film liquid is uniformly laid with to after on overlay film object, is placed at a temperature of 23~27 DEG C
Deionized water in, after submerging 8~12min, reuse 22~27 DEG C of flowing 30~60h of water washing, it is dry fine to get regeneration
The plain film of dimension.
7. according to any method of claim 1~6, which is characterized in that described to wait for that overlay film object is glass plate or stainless
Steel plate.
8. according to claim 1 any one of them method, which is characterized in that include the following steps：
1) corn stalk fiber element pulp is dissolved in containing after in ionic liquid, at a temperature of 50~60 DEG C, with 400~
The rate of 600r/min stirs 6~10h；At a temperature of being placed in 50~60 DEG C again, with the power ultrasonic deaeration 18 of 180~220W~
For 24 hours to get regenerated cellulose film liquid；
Wherein, the mass ratio of the ionic liquid and the ion liquid solvent is 1:2~9；The ion liquid solvent middle-jiao yang, function of the spleen and stomach
Ion is alkyl imidazolium ion, anion CF3COO-；
2) the regenerated cellulose film liquid is laid with to glass plate, is placed in the deionized water at a temperature of 23~27 DEG C, leaching
Not after 8~12min, 22~27 DEG C of flowing 30~60h of water washing is reused, it is dry to get regenerated cellulose film.
9. regenerated cellulose film made from claim 1~8 any one of them method；
Preferably, the thickness of the regenerated cellulose film is 10~30 μm.
10. application of the regenerated cellulose film on moisture-proof food glassine paper described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179066.XA CN108505209A (en) | 2018-03-05 | 2018-03-05 | A kind of regenerated cellulose film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179066.XA CN108505209A (en) | 2018-03-05 | 2018-03-05 | A kind of regenerated cellulose film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108505209A true CN108505209A (en) | 2018-09-07 |
Family
ID=63376056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810179066.XA Pending CN108505209A (en) | 2018-03-05 | 2018-03-05 | A kind of regenerated cellulose film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108505209A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274988A (en) * | 2007-03-26 | 2008-10-01 | 江苏龙马绿色纤维有限公司 | Industrial method for preparing regenerated cellulose film |
| CN102168323A (en) * | 2011-02-24 | 2011-08-31 | 天津工业大学 | Method for preparing chitosan and chitin functional materials by taking ionic liquid as solvent |
| CN102181945A (en) * | 2011-06-01 | 2011-09-14 | 山东海龙股份有限公司 | Deaeration method of cellulose ionic liquid solution for solvent spinning |
| CN102498122A (en) * | 2009-07-01 | 2012-06-13 | 威斯康星校友研究基金会 | Biomass hydrolysis |
| CN104610557A (en) * | 2013-11-01 | 2015-05-13 | 中国科学院化学研究所 | Regenerated cellulose membrane, functional membrane, and preparation method of regenerated cellulose membrane and functional membrane |
| CN105597551A (en) * | 2015-10-16 | 2016-05-25 | 福建农林大学 | Production method of regenerated cellulose nanofiltration membrane |
-
2018
- 2018-03-05 CN CN201810179066.XA patent/CN108505209A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274988A (en) * | 2007-03-26 | 2008-10-01 | 江苏龙马绿色纤维有限公司 | Industrial method for preparing regenerated cellulose film |
| CN102498122A (en) * | 2009-07-01 | 2012-06-13 | 威斯康星校友研究基金会 | Biomass hydrolysis |
| CN102168323A (en) * | 2011-02-24 | 2011-08-31 | 天津工业大学 | Method for preparing chitosan and chitin functional materials by taking ionic liquid as solvent |
| CN102181945A (en) * | 2011-06-01 | 2011-09-14 | 山东海龙股份有限公司 | Deaeration method of cellulose ionic liquid solution for solvent spinning |
| CN104610557A (en) * | 2013-11-01 | 2015-05-13 | 中国科学院化学研究所 | Regenerated cellulose membrane, functional membrane, and preparation method of regenerated cellulose membrane and functional membrane |
| CN105597551A (en) * | 2015-10-16 | 2016-05-25 | 福建农林大学 | Production method of regenerated cellulose nanofiltration membrane |
Non-Patent Citations (1)
| Title |
|---|
| 曹妍等: ""玉米秸秆纤维素在离子液体中的溶解再生研究"", 《现代化工》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104992853B (en) | The method for preparing ultracapacitor flexible membrane electrode | |
| CN100572432C (en) | A kind of cellulose solution and preparation method thereof | |
| CN101215725B (en) | Cellulose solvent and method for preparing spinning fluid from the same | |
| CN105566502B (en) | The preparation method of the renewable nano-cellulose film of water resistance | |
| CN105713100A (en) | Method for rapidly preparing cellulose nanocrystalline | |
| CN106057279B (en) | A kind of new polymers/Graphene compliant conductive composite membrane and preparation method thereof | |
| CN107915853A (en) | A kind of nano-cellulose/graphene composite and flexible film and preparation method and application | |
| CN105801883B (en) | A kind of method for preparing cellulose solution | |
| CN104130425B (en) | A kind of preparation method of material of regenerated cellulose | |
| CN102304238B (en) | Renewable cellulose composite film and preparation method thereof | |
| CN104004207B (en) | Ionic liquid prepares corn cob fiber cellulosic material or the method for blended fiber material | |
| CN104300164B (en) | A kind of preparation method of compound proton exchange membrane | |
| CN106012667A (en) | Hollocellulose transparent paper and preparation method thereof | |
| CN105498709A (en) | High-strength dialdehyde microfibrillar cellulose/chitosan composite membrane and preparation method and application thereof | |
| CN108252136A (en) | A kind of preparation method of the wooden nanofiber of wheat stalk | |
| WO2018068583A1 (en) | Artificial wood material and preparation method therefor | |
| CN108794799A (en) | A kind of preparation method of porous absorption oil absorption material | |
| CN108688285A (en) | A kind of the biomass overlay film greaseproof and preparation process of nano-cellulose enhancing | |
| CN107501884A (en) | A kind of fire-retardant and smoke-inhibiting type bamboo fibre/lactic acid composite material and preparation method thereof | |
| CN103214598A (en) | Quaternization xylan, preparation method via semi-dry process and application of quaternization xylan | |
| CN107880292A (en) | A kind of method that cellulose composite membrane is prepared using rice straw | |
| CN107501615A (en) | A kind of preparation method of high strength regenerative cellulose film | |
| CN107474854A (en) | A kind of preparation method of agricultural type cellulose water retention agent | |
| CN110241141A (en) | A kind of method that preprocessing lignocellulose improves anaerobic fermentation gas production rate | |
| CN110903606B (en) | Plant oil-based composite material and preparation method thereof |
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: 20180907 |