CN107629243A - The three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material - Google Patents
The three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material Download PDFInfo
- Publication number
- CN107629243A CN107629243A CN201710836883.3A CN201710836883A CN107629243A CN 107629243 A CN107629243 A CN 107629243A CN 201710836883 A CN201710836883 A CN 201710836883A CN 107629243 A CN107629243 A CN 107629243A
- Authority
- CN
- China
- Prior art keywords
- aqueous solution
- nayf
- composite
- silk
- rare earth
- 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.)
- Withdrawn
Links
Abstract
The invention discloses three-dimensional porous composite of cellulose base of a kind of supported rare earth up-conversion nano material and preparation method thereof, the magnetic porous composite material based on cellulosic material silk is prepared first, then utilizes NaYF4:The above-mentioned composite porous Hyperbranched Polymer with Terminal Amido that is immersed in successively is modified NaYF by the electrostatic interaction between Yb, Er/Tm as film forming motive force4:Yb, the Er/Tm aqueous solution and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:Electrostatic LBL self-assembly is carried out in Yb, the Er/Tm aqueous solution, determines composite material surface NaYF as needed4:The number of plies of Yb, Er/Tm assembling, so as to assign composite excellent up-conversion fluorescence performance, there is huge application value in fields such as sorbing material, biomaterials.
Description
Technical field
The present invention relates to a kind of three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material, category are compound
Material Field.
Background technology
Silk is described as fiber queen, and its is soft, abundant, smooth, plentiful, possesses gloss soft as pearl,
Weaving, apparel industry are widely used.Silk is made up of silk gum and fibroin, and wherein silk gum is located at the outer layer of silk, content
Between 20%-30%, fibroin is located at the internal layer of silk, and content is between 70%-80%.Fibroin positioned at silk internal layer is one
Kind natural macromolecular material, by serine（serine）, glycine（Glycine）, alanine（alanine）Deng 18 kinds of amino
Acid composition, molecular weight is about 2300kDa, is made up of heavy chain, light chain and P25, and wherein the molecular weight of heavy chain H chains is 350kDa, gently
Chain L chain molecular weights are 26kDa, and P25 molecular weight is 30kDa, and the ratio of three is 6:6:1.Fibroin share 11 noncrystalline domains and
12 crystal regions, by disulfide bond between heavy chain H chains and light chain L chains, form H-L complexs.
The crystal habit of fibroin is broadly divided into two kinds of the type of fibroin I and II type of fibroin.The type of fibroin I is a kind of knot of meta-stable
Structure, conformation are crank shape or zigzag, are a kind of intermediatenesses between alpha-helix and beta sheet, and structure cell belongs to orthorhombic
System.Handled through damp and hot, sour, polar solvent etc., the type of fibroin I is easy to change to the type of fibroin II.The type of fibroin II is antiparallel β-folding
Stack structure, belong to orthorhombic system, peptide chain arranged regular, hydrogen bond and intermolecular gravitation make adjacent chain is intersegmental to be tightly combined, tension
It is strong to stretch ability, and is insoluble in water, it is strong to the resistance of acid, alkali, salt, enzyme and heat.In addition, recent years are found that one kind is new again
Fibroin crystal habit, i.e. the type of fibroin III, its crystal structure is similar with polyglycine II, belongs to hexagonal crystal system.
Silk obtained regenerated silk fibroin after degumming, dissolving, purification have nontoxic, non-stimulated, biological degradability,
Biocompatibility, good engineering properties, are easily processed into various forms, as silk protein films, gel, fiber, three-dimensional rack,
Sponge etc., it is a kind of important natural function material, available for fields such as biology, medical science, photoelectric materials, is carried as medicament slow release
Body, tissue engineering bracket, operation suture thread, artificial skin, artificial tendon, cell culture vector, wound dressing, electrically conducting transparent are thin
Film, sorbing material etc.（Silk, 2017,03:6-12；Biomedical engineering magazine, 2015,06:1364-1368；Sericulture section
Learn, 2016,02:341-345）.
For a long time, cellulose is always weaving, the key industry raw material of papermaking, with its recyclability, biodegradable
Property and cost advantage are increasingly subject to the attention of people, in medicine control, release tech, immobilization technology, biology sensor, membrane material
Material, performance chemicalses and additive etc. show good development prospect.Reduction and oil, natural gas due to arable land etc.
The increasingly depleted of fossil resource, the yield of synthetic fibers will be restricted more and more.And a kind of green of cellulose conduct,
Environmentally friendly, reproducible resource, obtain a unprecedented opportunity to develop（The preparation of dissaving polymer and the function to cotton fiber
Change and be modified [D] University Of Suzhou, 2009）.
Rare earth upconversion nano luminescent material（UCNPs）Can be by two-photon or multi-photon mechanism the long amplitude of low energy
Penetrate and be converted into high-energy shortwave radiation, it possesses, and toxicity is low, chemical stability is high, photostability is strong, signal to noise ratio is high, emission band
Light penetration depth narrow, fluorescence lifetime is long, anti-Stokes displacement is big, larger, without photobleaching, without background fluorescence and to biology
Many advantages, such as organizing not damaged, controls in immunoassay, biomarker, bio-sensing, bio-imaging, pharmaceutical carrier, light power
The fields such as treatment, photo-thermal therapy, photoconductive switch, information storage, food safety detection, photocatalysis and solar cell have extensively
Research and application.Wherein NaYF4:Yb, Er/Tm are one of luminous efficiency highest UCNPs.
201410701957.9 a kind of salix monogolica regenerated celulose fibre of Chinese invention patent and preparation method thereof, China
A kind of fluorescence Lyocell of patent of invention 201410702142.2 and preparation method thereof, Chinese invention patent 201410702118.9
UCNPs is added in spinning solution by a kind of Static Spinning fluorescence PVA nano fibrous membranes and preparation method thereof, by being efficiently blended, wet
The fiber with excellent fluorescence property is prepared in method spining technology.But co-blended spinning method is only applicable to synthetic fibers, at present
It yet there are no the document report on UCNPs LBL self-assemblies to three-dimensional porous composite.
The content of the invention
In view of the above problems, the present invention provides a kind of cellulose base of supported rare earth up-conversion nano material is three-dimensional porous multiple
Condensation material and preparation method.
The technical scheme is that：
（1）Cellulosic material is immersed into the NaOH solution 60min that mass fraction is 15%, bath raio 1 under normal temperature:50, use deionized water
Neutrality is washed till, is dried；Cellulosic material after NaOH is handled is dispersed in water again, bath raio 1:50, glutaraldehyde is added, wherein
The volume ratio of glutaraldehyde and the cellulosic material aqueous solution is 1:10-1:25, react 1h, be slowly added to 1-100g/L polyamide-
The volume ratio of the amine PAMAM aqueous solution, wherein the PAMAM aqueous solution and the cellulosic material aqueous solution is 1:5-1:10, after reacting 24h,
Washed repeatedly with distilled water and ethanol, obtain PAMAM modified cellulosic materials after drying.（2）Silk-fibroin is dissolved in deionized water
In, the 1g/L-100g/L aqueous solution is configured to, delays the 1g/L-100g/L trivalent iron salt aqueous solution under conditions of 50-80 DEG C
Slowly it is added dropwise in silk protein aqueous solution, stirs, wherein the mass ratio of the silk-fibroin and trivalent iron salt is 1:1-10:1, with
The calcium chloride solution that concentration is 1-5wt% is added dropwise in 30 drops/min speed, and the mass ratio of the calcium chloride and silk-fibroin is 1:
10-1:50, regulation pH value is to 10-12, after 60 DEG C are at the uniform velocity stirred 1h, the PAMAM modified cellulosics that are slowly added in step 1
Material, the mass ratio of the PAMAM modified cellulosic materials and silk-fibroin is 1:10-10:1, after reacting 24h, pour into mould, put
Enter 1min in liquid nitrogen, pre-freeze 6h in -20 DEG C of refrigerators is placed in after taking-up, 6h, Ran Houfang are freezed in -80 DEG C of Thermo ultra low temperature freezers
Entering into freeze dryer 48h, to obtain cellulose base magnetic three-dimensional composite porous.（3）Hyperbranched Polymer with Terminal Amido is modified
NaYF4:Yb, Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:Yb, Er/Tm are configured to the water-soluble of 0.1-5g/L respectively
Liquid, the composite porous Hyperbranched Polymer with Terminal Amido for being immersed in 80 DEG C of above-mentioned magnetic three-dimensional is then modified into NaYF4:Yb,
10-60min in the Er/Tm aqueous solution, bath raio 1:10, rinsed, dried repeatedly with deionized water after taking-up；Then by above-mentioned composite wood
Material is immersed in 80 DEG C of Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:10-60min in Yb, the Er/Tm aqueous solution, bath raio 1:10,
Rinsed, dried, so far by one layer of NaYF repeatedly with deionized water after taking-up4:Yb, Er/Tm are assembled into the surface of composite,
Then modify NaYF in Hyperbranched Polymer with Terminal Amido successively4:Yb, Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:
Aforesaid operations are repeated in Yb, Er/Tm dressing liquid, determine composite material surface NaYF as needed4:The layer of Yb, Er/Tm assembling
Number.
Preferably, the cellulosic material includes natural cellulosic materials and material of regenerated cellulose
Preferably, the silk-fibroin is that silk is made after degumming, dissolving, dialysis, purification.
Preferably, the trivalent iron salt is the one or more in iron chloride, ferric sulfate, ferric nitrate.
Compared with prior art, the advantage of the invention is that：PAMAM is polyamidoamine dendrimer, and surface is rich
Containing amino, imido grpup.Using cellulosic material and silk-fibroin as carrier, PAMAM is crosslinking agent, is produced between the two firm covalent
Bond is closed, and it is composite porous to obtain after crosslinking, liquid nitrogen, freeze-drying process silk-cellulosic material, final load
NaYF4:Yb, Er/Tm, it ensure that NaYF4:Yb, Er/Tm dispersing uniformity and silk in silk-cellulosic material matrix-
The Stability Analysis of Structures and mechanical strength of cellulosic material porous material.The composite has in fields such as sorbing material, biomaterials
Huge application value.
Embodiment
The invention will be further elucidated with reference to specific embodiments.
Embodiment 1：
（1）Cotton is immersed into the NaOH solution 60min that mass fraction is 15%, bath raio 1 under normal temperature:50, it is washed with deionized water into
Property, drying；Cotton after NaOH is handled is dispersed in water again, bath raio 1:50, glutaraldehyde is added, wherein glutaraldehyde and cotton is water-soluble
The volume ratio of liquid is 1:10, react 1h, be slowly added to the 10g/L polyamide-amide PAMAM aqueous solution, wherein the PAMAM aqueous solution with
The volume ratio of the cotton aqueous solution is 1:5, after reacting 24h, washed repeatedly with distilled water and ethanol, PAMAM modification cottons are obtained after drying；
（2）Silk-fibroin is dissolved in deionized water, is configured to the 10g/L aqueous solution, by 10g/L chlorination molten iron under conditions of 50 DEG C
Solution is slowly dropped into silk protein aqueous solution, is stirred, wherein the mass ratio of the silk-fibroin and iron chloride is 10:1, with
The calcium chloride solution that concentration is 1wt% is added dropwise in 30 drops/min speed, and the mass ratio of calcium chloride and silk-fibroin is 1:10, adjust
After saving pH value to 10,60 DEG C at the uniform velocity stirring 1h, the PAMAM being slowly added in step 1 is modified the matter of cotton, modified cotton and silk-fibroin
Amount is than being 1:10, after reacting 24h, pour into mould, be put into 1min in liquid nitrogen, pre-freeze 6h in -20 DEG C of refrigerators is placed in after taking-up, -
6h is freezed in 80 DEG C of Thermo ultra low temperature freezers, being then placed in 48h in freeze dryer, to obtain cellulose base magnetic three-dimensional porous multiple
Condensation material；（3）Hyperbranched Polymer with Terminal Amido is modified into NaYF4:Yb, Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:
Yb, Er/Tm are configured to the 0.1g/L aqueous solution respectively, then by the composite porous end for being immersed in 80 DEG C of above-mentioned magnetic three-dimensional
Amino dissaving polymer modifies NaYF4:10min in Yb, the Er/Tm aqueous solution, bath raio 1:10, after taking-up with deionized water repeatedly
Rinse, drying；Then the Hyperbranched Polymer with Terminal Hydroxyl for above-mentioned composite being immersed in 80 DEG C modifies NaYF4:Yb,Er/Tm
10min in the aqueous solution, bath raio 1:10, rinsed, dried repeatedly with deionized water after taking-up, finally given conversion on supported rare earth and receive
The three-dimensional porous composite of cellulose base of rice material.
Embodiment 2：
（1）Stalk is immersed into the NaOH solution 60min that mass fraction is 15%, bath raio 1 under normal temperature:50, it is washed with deionized water into
Property, drying；Stalk after NaOH is handled is dispersed in water again, bath raio 1:50, add glutaraldehyde, wherein glutaraldehyde and stalk
The volume ratio of the aqueous solution is 1:15,1h is reacted, is slowly added to the 50g/L polyamide-amide PAMAM aqueous solution, wherein PAMAM is water-soluble
The volume ratio of liquid and the stalk aqueous solution is 1:8, after reacting 24h, washed repeatedly with distilled water and ethanol, obtain PAMAM after drying
Modified straw；（2）Silk-fibroin is dissolved in deionized water, is configured to the 50g/L aqueous solution, by 50g/L's under conditions of 80 DEG C
Ferric sulfate aqueous solution is slowly dropped into silk protein aqueous solution, is stirred, wherein the mass ratio of the silk-fibroin and ferric sulfate
For 1:1, calcium chloride solution of the concentration as 2wt% is added dropwise using 30 drops/min speed, the mass ratio of calcium chloride and silk-fibroin is
1:20, after regulation pH value at the uniform velocity stirs 1h to 11,60 DEG C, the PAMAM modified straws that are slowly added in step 1, modified straw with
The mass ratio of silk-fibroin is 1:1, after reacting 24h, pour into mould, be put into 1min in liquid nitrogen, be placed in after taking-up in -20 DEG C of refrigerators
Pre-freeze 6h, 6h is freezed in -80 DEG C of Thermo ultra low temperature freezers, 48h in freeze dryer is then placed in and obtains cellulose base magnetic three
Tie up composite porous；（3）Hyperbranched Polymer with Terminal Amido is modified into NaYF4:Yb, Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl
Modify NaYF4:Yb, Er/Tm are configured to the 1g/L aqueous solution respectively, are then immersed in above-mentioned magnetic three-dimensional is composite porous
80 DEG C of Hyperbranched Polymer with Terminal Amido modification NaYF4:30min in Yb, the Er/Tm aqueous solution, bath raio 1:10, spent after taking-up from
Sub- water rinses repeatedly, drying；Then the Hyperbranched Polymer with Terminal Hydroxyl for above-mentioned composite being immersed in 80 DEG C modifies NaYF4:
30min in Yb, the Er/Tm aqueous solution, bath raio 1:10, rinsed, dried, so far by one layer repeatedly with deionized water after taking-up
NaYF4:Yb, Er/Tm are assembled into the surface of composite, then modify NaYF in Hyperbranched Polymer with Terminal Amido successively4:Yb,
Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:Aforesaid operations are repeated twice in Yb, Er/Tm dressing liquid, are finally given
The three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material.
Embodiment 3：
（1）Lyocell is immersed into the NaOH solution 60min that mass fraction is 15%, bath raio 1 under normal temperature:50, it is washed with deionized water
To neutrality, drying；Lyocell after NaOH is handled is dispersed in water again, bath raio 1:50, glutaraldehyde is added, wherein penta 2
The volume ratio of aldehyde and the Lyocell aqueous solution is 1:20,1h is reacted, is slowly added to the 80g/L polyamide-amide PAMAM aqueous solution, its
The volume ratio of the middle PAMAM aqueous solution and the Lyocell aqueous solution is 1:10, after reacting 24h, washed repeatedly with distilled water and ethanol,
PAMAM is obtained after drying and is modified Lyocell；（2）Silk-fibroin is dissolved in deionized water, is configured to the 80g/L aqueous solution, 60 DEG C
Under conditions of the 80g/L trivalent iron salt aqueous solution is slowly dropped into silk protein aqueous solution, stir, wherein the silk
The mass ratio of albumen and ferric nitrate is 10:1, calcium chloride solution of the concentration as 5wt%, chlorine are added dropwise using 30 drops/min speed
The mass ratio for changing calcium and silk-fibroin is 1:50, after regulation pH value at the uniform velocity stirs 1h to 12,60 DEG C, it is slowly added in step 1
PAMAM is modified Lyocell, and modified Lyocell and silk-fibroin mass ratio are 10:1, after reacting 24h, pour into mould, be put into
1min in liquid nitrogen, pre-freeze 6h in -20 DEG C of refrigerators is placed in after taking-up, 6h is freezed in -80 DEG C of Thermo ultra low temperature freezers, is then placed in
Into freeze dryer, 48h obtains the composite porous material of cellulose base magnetic three-dimensional；（3）Hyperbranched Polymer with Terminal Amido is modified
NaYF4:Yb, Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:Yb, Er/Tm are configured to the 5g/L aqueous solution respectively, with
The composite porous Hyperbranched Polymer with Terminal Amido for being immersed in 80 DEG C of above-mentioned magnetic three-dimensional is modified into NaYF afterwards4:Yb,Er/Tm
60min in the aqueous solution, bath raio 1:10, rinsed, dried repeatedly with deionized water after taking-up；Then above-mentioned composite is immersed in
80 DEG C of Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:60min in Yb, the Er/Tm aqueous solution, bath raio 1:10, spent after taking-up from
Sub- water rinses repeatedly, drying, so far by one layer of NaYF4:Yb, Er/Tm are assembled into the surface of composite, are then holding successively
Amino dissaving polymer modifies NaYF4:Yb, Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:Yb, Er/Tm dressing liquid
In aforesaid operations in triplicate, finally give the three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.Here all embodiments can not be exhaustive.It is every to belong to this hair
Row of the obvious changes or variations that bright technical scheme is amplified out still in protection scope of the present invention.
Claims (7)
1. a kind of preparation method of the three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material, its feature exist
In：
（1）Cellulosic material is immersed into the NaOH solution 60min that mass fraction is 15%, bath raio 1 under normal temperature:50, use deionized water
Neutrality is washed till, is dried；Cellulosic material after NaOH is handled is dispersed in water again, bath raio 1:50, glutaraldehyde is added, wherein
The volume ratio of glutaraldehyde and the cellulosic material aqueous solution is 1:10-1:25, react 1h, be slowly added to 1-100g/L polyamide-
The volume ratio of the amine PAMAM aqueous solution, wherein the PAMAM aqueous solution and the cellulosic material aqueous solution is 1:5-1:10, after reacting 24h,
Washed repeatedly with distilled water and ethanol, obtain PAMAM modified cellulosic materials after drying；
（2）Silk-fibroin is dissolved in deionized water, is configured to the 1g/L-100g/L aqueous solution, by 1g/ under conditions of 50-80 DEG C
The L-100g/L trivalent iron salt aqueous solution is slowly dropped into silk protein aqueous solution, is stirred, wherein the silk-fibroin and three
The mass ratio of valency molysite is 1:1-10:1, calcium chloride solution of the concentration as 1-5wt% is added dropwise using 30 drops/min speed, adjusted
PH value is saved to 10-12, after 60 DEG C are at the uniform velocity stirred 1h, the PAMAM modified cellulosic materials that are slowly added in step 1 react 24h
Afterwards, pour into mould, be put into 1min in liquid nitrogen, pre-freeze 6h in -20 DEG C of refrigerators, -80 DEG C of Thermo ultralow temperature ices are placed in after taking-up
6h is freezed in case, being then placed in 48h in freeze dryer, to obtain cellulose base magnetic three-dimensional composite porous；
（3）Hyperbranched Polymer with Terminal Amido is modified into NaYF4:Yb, Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:Yb,
Er/Tm is configured to the 0.1-5g/L aqueous solution respectively, then by the composite porous end for being immersed in 80 DEG C of above-mentioned magnetic three-dimensional
Amino dissaving polymer modifies NaYF4:10-60min in Yb, the Er/Tm aqueous solution, bath raio 1:10, use deionized water after taking-up
Rinse, dry repeatedly；Then the Hyperbranched Polymer with Terminal Hydroxyl for above-mentioned composite being immersed in 80 DEG C modifies NaYF4:Yb,
10-60min in the Er/Tm aqueous solution, bath raio 1:10, rinsed, dried, so far by one layer repeatedly with deionized water after taking-up
NaYF4:Yb, Er/Tm are assembled into the surface of composite, then modify NaYF in Hyperbranched Polymer with Terminal Amido successively4:Yb,
Er/Tm and Hyperbranched Polymer with Terminal Hydroxyl modification NaYF4:Aforesaid operations are repeated in Yb, Er/Tm dressing liquid, are determined as needed
Composite material surface NaYF4:The number of plies of Yb, Er/Tm assembling.
A kind of 2. three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material according to claim 1
Preparation method, it is characterised in that the cellulosic material includes natural cellulosic materials and material of regenerated cellulose.
A kind of 3. three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material according to claim 1
Preparation method, it is characterised in that the silk-fibroin be by silk after degumming, dissolving, dialysis, purification be made.
A kind of 4. three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material according to claim 1
Preparation method, it is characterised in that the trivalent iron salt is iron chloride, ferric sulfate, the one or more in ferric nitrate.
A kind of 5. three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material according to claim 1
Preparation method, it is characterised in that the mass ratio of the calcium chloride and silk-fibroin be 1:10-1:50.
A kind of 6. three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material according to claim 1
Preparation method, it is characterised in that the mass ratio of the PAMAM modified cellulosic materials and silk-fibroin be 1:10-10:1.
7. a kind of cellulose base of the supported rare earth up-conversion nano material obtained by claim 1 preparation method is three-dimensional porous multiple
Condensation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710836883.3A CN107629243A (en) | 2017-09-17 | 2017-09-17 | The three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710836883.3A CN107629243A (en) | 2017-09-17 | 2017-09-17 | The three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107629243A true CN107629243A (en) | 2018-01-26 |
Family
ID=61101669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710836883.3A Withdrawn CN107629243A (en) | 2017-09-17 | 2017-09-17 | The three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107629243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438770A (en) * | 2018-11-27 | 2019-03-08 | 东北林业大学 | Light-emitting film and preparation method thereof is converted in a kind of circular polarization based on chiral nematic Cellulose nanocrystal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104357931A (en) * | 2014-11-28 | 2015-02-18 | 赵兵 | Fluorescent salix mongolica regenerated cellulose fibers and preparation method thereof |
| CN104448659A (en) * | 2014-12-14 | 2015-03-25 | 苏州大学 | Magnetic amphoteric cellulose powder material, preparation method and applications |
| CN104761749A (en) * | 2015-04-03 | 2015-07-08 | 四川大学 | Cellulose nanofiber hyperbranched modification method |
| CN106423086A (en) * | 2016-08-30 | 2017-02-22 | 浙江大学宁波理工学院 | Preparation of functional magnetic composite materials modified by biology-based celluloses and application of functional magnetic composite materials |
-
2017
- 2017-09-17 CN CN201710836883.3A patent/CN107629243A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104357931A (en) * | 2014-11-28 | 2015-02-18 | 赵兵 | Fluorescent salix mongolica regenerated cellulose fibers and preparation method thereof |
| CN104448659A (en) * | 2014-12-14 | 2015-03-25 | 苏州大学 | Magnetic amphoteric cellulose powder material, preparation method and applications |
| CN104761749A (en) * | 2015-04-03 | 2015-07-08 | 四川大学 | Cellulose nanofiber hyperbranched modification method |
| CN106423086A (en) * | 2016-08-30 | 2017-02-22 | 浙江大学宁波理工学院 | Preparation of functional magnetic composite materials modified by biology-based celluloses and application of functional magnetic composite materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438770A (en) * | 2018-11-27 | 2019-03-08 | 东北林业大学 | Light-emitting film and preparation method thereof is converted in a kind of circular polarization based on chiral nematic Cellulose nanocrystal |
| CN109438770B (en) * | 2018-11-27 | 2020-07-10 | 东北林业大学 | Chiral nematic cellulose nanocrystalline-based circularly polarized up-conversion luminescent film and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103665439B (en) | With environmental response Nano bacteria cellulose composite material and preparation method and application | |
| CN107603240A (en) | Cellulose based on graphene/nano silver wire/silk magnetic porous composite material | |
| Li et al. | Structure and properties of silk fibroin–poly (vinyl alcohol) gel | |
| CN107501961A (en) | Titanium dioxide/Nano Silver/silk magnetic porous composite material and preparation method thereof | |
| Zuo et al. | Analysis of structure and properties of biodegradable regenerated silk fibroin fibers | |
| JP5761736B2 (en) | Sericin nanofiber and production method thereof, metal ion adsorbent, dyeing function enhancement material, chemical resistance enhancement material, sericin / fibroin composite nanofiber and production method thereof | |
| CN104032572B (en) | The hydrophilic modification method of a kind of sodium alginate to polyster fibre | |
| CN107474304A (en) | A kind of graphene oxide sodium alginate magnetic composite and preparation method | |
| CN106496608B (en) | Collagen-based compounds the preparation method of non-ionic polysaccharide building composite hydrogel | |
| Reddy et al. | Unique natural‐protein hollow‐nanofiber membranes produced by weaver ants for medical applications | |
| Rising et al. | Biological materials processing: time-tested tricks for sustainable fiber fabrication | |
| Sun et al. | Growing silk fibroin in advanced materials for food security | |
| CN110117830B (en) | High-toughness organic-inorganic composite macroscopic fiber and preparation and application thereof | |
| CN107629243A (en) | The three-dimensional porous composite of cellulose base of supported rare earth up-conversion nano material | |
| CN106492286B (en) | A kind of fibroin/bacteria cellulose composite hydrogel and its preparation method and application | |
| CN110028685B (en) | Preparation method of fibroin/chitosan/porous graphene oxide composite three-dimensional scaffold | |
| CN105297440A (en) | Method for graft modification of silks | |
| CN107556762A (en) | A kind of titanic oxide/zinc oxide/silk/salix monogolica composite and preparation method | |
| CN107603239A (en) | A kind of graphene silk salix monogolica nano composite material and preparation method thereof | |
| CN107556522A (en) | Silk/the sodium alginate for loading graphene and nano silver wire is composite porous | |
| CN107619501A (en) | A kind of graphene composite material and preparation method thereof | |
| JP2004131647A (en) | Composite of silk protein with chitosan and method for producing the same | |
| CN107556760A (en) | Graphene oxide silk salix monogolica nano composite material and preparation method thereof | |
| CN115353672B (en) | Luminous hydrogel material with shape memory function and preparation and application thereof | |
| CN115948862A (en) | Collagen cellulose fiber cloth and production 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180126 |
|
| WW01 | Invention patent application withdrawn after publication |