CN107602943A - The three-dimensional porous composite of cellulose base of supported nano zinc oxide - Google Patents
The three-dimensional porous composite of cellulose base of supported nano zinc oxide Download PDFInfo
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Abstract
The invention discloses a kind of three-dimensional porous composite of cellulose base of supported nano zinc oxide and preparation method, by weight percentage, 40 60% cellulose beta cyclodextrin composites and 40 60% PAMAM modified konjakus, 1 5% pore-foaming agent are successively scattered in deionized water, bath raio 1:50, after ultrasonic mixing is uniform, at the uniform velocity stirring reaction 24h under normal temperature；It is subsequently poured into mould, is 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 48h in freeze dryer and obtains cellulose/three-dimensional porous composite of konjaku/cyclodextrin.Then by the use of electrostatic interaction as film forming motive force, in the three-dimensional porous composite surface layer layer self-assembled nanometer zinc oxide of cellulose/konjaku/cyclodextrin.The present invention uses konjaku, cellulosic material, beta cyclodextrin, zinc oxide to have the advantages that raw material is sufficient, cheap as raw material, have important application value in fields such as photocatalysis, photoelectric material, sorbing material, biomaterials.
Description
Technical field
The present invention relates to a kind of three-dimensional porous composite of the cellulose base of supported nano zinc oxide, belongs to nano composite material
Field.
Background technology
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.
Konjaku glucomannan（Konjac glucomannan, abbreviation KGM）It is after starch and cellulose, one kind is more
Abundant renewable natural polymer child resource, has biodegradable, and its hydrosol has very high viscosity and multifrequency nature
Such as thickening, gel and film forming performance；And a kind of excellent dietary fiber, available for prevention and treatment hypertension, high fat of blood,
The diseases such as cardiovascular disease, it has also become important food additives and healthy food material.In fields such as chemical industry, environmental protection and oil drillings
Also there is important use（Structural chemistry, 2003,06:633-642）.
Using acidified modified, alkali modification, grafting, copolymerization and modification, it is cross-linking modified and etherification modified the methods of can improve KGM's
Performance, for example add alkali deacetylate processing KGM, its strain resistant ability enhancing, mechanical property are improved after processing, therefore natural
KGM and its modified product, turn into one of focus of research（Material Leader, 2009,19:32-36）.
, can also be by being mixed with other suitable biopolymers to improve KGM property except chemical modification（Material
Leader, 2009,19:32-36）.Such as Wuhan University of Technology Fan Li Hong konjaku is made after sodium periodate oxidation oxidation konjaku
（OKGM）, utilize its aldehyde radical and hydroxypropyl chitosan（HPCS）On amino crosslinking prepare hydrogel, while by graphene oxide
（GO）Added as additive in hydrogel and obtain hydroxypropyl chitosan/oxidized konjaku/graphene oxide hydrogel（Wuhan University
Journal (Edition), 2016,04:361-367）.Guangzhou Business School Huang builds the method for just using physical blending, according to KGM:
Silk peptide=1:0,1:2,2:1,0:1 molal weight is molten by quantitative silk peptide in the case of stirring than preparing blending colloidal sol
In deionized water, after being completely dissolved, add quantitative KGM powder, under 45 DEG C of water bath conditions, with 450rmin-1Stirring
1h, blending colloidal sol is prepared（Concentration is 1.2%）（The biological journal in the torrid zone, 2016,04:472-476）.University Of Agriculture and Forestry In Fujian is thanked
Third clearly according to KGM:Fibroin=1:1、1:2、1:3 mass ratio is mixed and stirred for being allowed to well mixed, have studied silk egg
In vain to konjaku glucomannan（KGM）The influence of structure and sol property（Modern food science and technology, 2016,10:125-130+27）.
In addition, also have largely on KGM and hydroxyapatite, montmorillonite, collagen, chitosan, CNT, concave convex rod
The document report of the Material claddings such as soil, starch, soybean protein, graphene（Silicate is circulated a notice of, and 2011,01:162-166+171；In
Jin Chao Institutes Of Technology Of Zhejiang, 2012；Plastics industry, 2010,07:18-20+33；Materials Science and Engineering journal, 2009,06:
870-875+884；Wuhan University Journal (Edition), 2008,02:139-142；Material Leader, 2009,19:32-36；
The preparation method of CN201611262418.5 thermoplasticity konjaku glucomannan nano composite materials；CN201210153668.0 thermoplastics
Property konjaku glucomannan/graphene oxide composite material and preparation method thereof）.
Inorganic nano material refers to that size is in 1-100nm material, relative to other nano materials, inorganic nano material
With preparing simple, the advantage such as cost is cheap, uniform particle diameter, photocatalysis, solar cell, biology, medicine, weaving, printing and dyeing,
There are extensive research and application in the fields such as wearable electronic.In the inorganic nano material of numerous types, zinc oxide accounts for
According to important position.Nano zine oxide is a kind of important photoelectric semiconductor material, has wider forbidden band wide at room temperature
Degree（3.37eV）With larger exciton bind energy.Nano zine oxide has many excellent physical and chemical properties, as higher
Chemical stability, nontoxic and non-migratory, low-k, photocatalysis performance, fluorescence, piezoelectricity, absorb and scatter ultraviolet
Ability of line etc., therefore nano zine oxide all has important Research Significance in many fields, and before showing tempting application
Scape.Nano zine oxide is in catalyst, gas sensor, semiconductor devices, piezo-resistance, piezoelectric device, field emission in recent years
The field such as display and ultraviolet light screening material is widely used.But do not have also at present compound with cellulose/KGM/ beta-schardinger dextrins
Material is reported for the open source literature of carrier loaded nano zine oxide.
The content of the invention
In view of the above problems, the present invention provides a kind of three-dimensional porous composite of cellulose base of supported nano zinc oxide and
Preparation method.
The technical scheme is that：
（1）Cellulosic material is scattered in deionized water, bath raio 1:50, then add beta-schardinger dextrin, the beta-schardinger dextrin and
The mass ratio of cellulose is 1:10-10:1, after being mixed evenly, 1-100g/L sodium metaperiodate is added, is kept away at 50-80 DEG C
Light reaction 60-300min, cleaned repeatedly with deionized water, drying obtains cellulose-beta-schardinger dextrin composite.（2）Under normal temperature
Konjaku flour is scattered in deionized water, bath raio 1:50, add the volume ratio of glutaraldehyde, wherein glutaraldehyde and konjaku amidin
For 1:10, it is mixed evenly, is then slowly added into the 1-100g/L polyamide-amide PAMAM aqueous solution, wherein PAMAM is water-soluble
The volume ratio of liquid and konjaku amidin is 1:1-1:10, after reacting 24h, washed with distilled water and ethanol, obtained after drying repeatedly
To PAMAM modified konjakus.（3）By weight percentage, by 40-60% celluloses-beta-schardinger dextrin composite and 40-60%
PAMAM modified konjakus, 1-5% pore-foaming agents are successively scattered in deionized water, bath raio 1:50, it is even under normal temperature after ultrasonic mixing is uniform
Fast stirring reaction 24h；It is subsequently poured into mould, is put into 1min in liquid nitrogen, is placed in pre-freeze 6h in -20 DEG C of refrigerators after taking-up, -80 DEG C
6h is freezed in Thermo ultra low temperature freezers, being then placed in 48h in freeze dryer, to obtain cellulose/konjaku/cyclodextrin three-dimensional porous
Composite.（4）1mol/L liquor zinci chloridi is prepared, 1mol/L sodium hydrate aqueous solution, the hydrogen is then added dropwise
Sodium hydroxide solution and the volume ratio of liquor zinci chloridi are 1:2-2:1, after ultrasonic mixing is uniform, it is slowly added to dodecyl sulphate
The mass ratio of sodium, the lauryl sodium sulfate and zinc chloride is 1:1-3:1, ultrasonic 2h, move to 160 DEG C of reaction 6- in reactor
12h, cleaned repeatedly with ethanol and deionized water, centrifuge, Zinc oxide nanoparticle is obtained after drying process.（5）By PAMAM and six
Nitric hydrate zinc is configured to 1-100g/L and the 1mol/L aqueous solution respectively, PAMAM and the zinc nitrate hexahydrate aqueous solution
Volume ratio is 1:1-5:1, after being mixed evenly, 200 DEG C of reaction 5h are moved in reactor, it is repeatedly clear with ethanol and deionized water
Wash, centrifuge, Zinc oxide nanoparticle is obtained after drying process.（6）Zinc oxide nanoparticle in step 5 is configured to quality
The fraction 0.1-5% aqueous solution, then the cellulose in step 4/three-dimensional porous composite of konjaku/cyclodextrin is immersed in and received
30-60min in rice zinc oxide aqueous solution, bath raio 1:10, rinsed, dried repeatedly with deionized water after taking-up；Then by step 6
In Zinc oxide nanoparticle be configured to the mass fraction 0.1-5% aqueous solution, above-mentioned three-dimensional porous composite is immersed in and received
30-60min in rice zinc oxide aqueous solution, bath raio 1:10, rinsed, dried, so far by one layer repeatedly with deionized water after taking-up
Nano zine oxide is assembled into the surface of three-dimensional porous composite, then repeatedly aforesaid operations, determines as needed three-dimensional porous
The number of plies of composite material surface nano zine oxide assembling.
Preferably, the pore-foaming agent is lauryl sodium sulfate, cetyl trimethylammonium bromide, polyethylene glycol
In one or more.
Compared with prior art, the advantage of the invention is that：Sodium metaperiodate be modified destroy to a certain extent cellulose and
The crystal region of beta-schardinger dextrin, so as to be advantageous to the grafting functional group on cellulose and beta-schardinger dextrin macromolecular chain.PAMAM is
Polyamidoamine dendrimer, surface is rich in amino, imido grpup.Thus cellulose-beta-schardinger dextrin composite, PAMAM
Firm combination can be produced by chemical bond, hydrogen bond, Van der Waals force between modified konjaku and graphene oxide, be prepared
Cellulose/three-dimensional porous composite of konjaku/cyclodextrin has that density is low, intensity is big, high temperature resistant, specific surface area are big, energy of adsorption
The advantages that power is strong.Nano zine oxide is by electrostatic attraction LBL self-assembly strong bonded, in photocatalysis, photoelectric material, adsorption material
The fields such as material, biomaterial have important application value.
Embodiment
The invention will be further elucidated with reference to specific embodiments.
Embodiment 1：
（1）After cotton is shredded, it is scattered in deionized water, bath raio 1:50, then add beta-schardinger dextrin, wherein beta-schardinger dextrin and
The mass ratio of cotton is 1:1, after being mixed evenly, 20g/L sodium metaperiodate is added, lucifuge reacts 300min at 50 DEG C, uses
Deionized water is cleaned repeatedly, and drying obtains cotton-beta-schardinger dextrin composite.（2）Konjaku flour is scattered in deionized water under normal temperature
In, bath raio 1:50, glutaraldehyde is added, the volume ratio of wherein glutaraldehyde and konjaku amidin is 1:10, it is mixed evenly, so
The 50g/L polyamide-amide PAMAM aqueous solution is slowly added to afterwards, and the volume ratio of wherein the PAMAM aqueous solution and konjaku amidin is
1:1, after reacting 24h, washed repeatedly with distilled water and ethanol, obtain PAMAM modified konjakus after drying.（3）By weight percentage
Meter, by 50% cotton-beta-schardinger dextrin composite and 49%PAMAM modified konjakus, 1% lauryl sodium sulfate be successively scattered in from
In sub- water, bath raio 1:50, after ultrasonic mixing is uniform, at the uniform velocity stirring reaction 24h under normal temperature；It is subsequently poured into mould, is put into liquid nitrogen
Middle 1min, 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 jelly
48h obtains cotton/three-dimensional porous composite of konjaku/cyclodextrin in dry machine.（4）Prepare 1mol/L liquor zinci chloridi, then by
1mol/L sodium hydrate aqueous solution is added dropwise to, the volume ratio of the sodium hydroxide solution and liquor zinci chloridi is 1:2, ultrasound is mixed
After closing uniformly, lauryl sodium sulfate is slowly added to, the mass ratio of the lauryl sodium sulfate and zinc chloride is 1:1, ultrasound
2h, 160 DEG C of reaction 6h in reactor are moved to, cleaned repeatedly with ethanol and deionized water, centrifuge, zinc oxide is obtained after drying process
Nano particle.（5）PAMAM and zinc nitrate hexahydrate are configured to 1g/L and the 1mol/L aqueous solution, the PAMAM and six respectively
The volume ratio of the nitric hydrate zinc aqueous solution is 1:1, after being mixed evenly, move in reactor 200 DEG C of reaction 5h, with ethanol and
Deionized water cleans, centrifuges, Zinc oxide nanoparticle is obtained after drying process repeatedly.（6）By the zinc-oxide nano in step 5
Particle formulation into mass fraction 0.1% the aqueous solution, then by the cotton in step 4/three-dimensional porous composite of konjaku/cyclodextrin
It is immersed in 30min in the nano zine oxide aqueous solution, bath raio 1:10, rinsed, dried repeatedly with deionized water after taking-up；Then will step
Zinc oxide nanoparticle in rapid six is configured to the aqueous solution of mass fraction 0.1%, and above-mentioned three-dimensional porous composite is immersed in
30min in the nano zine oxide aqueous solution, bath raio 1:10, rinsed, dried repeatedly with deionized water after taking-up, obtain loading nano oxygen
Change the three-dimensional porous composite of cellulose base of zinc.
Embodiment 2：
（1）After viscose fabric is shredded, it is scattered in deionized water, bath raio 1:50, beta-schardinger dextrin is then added, wherein β-ring paste
The mass ratio of essence and viscose glue is 1:2, after being mixed evenly, 50g/L sodium metaperiodate is added, lucifuge is reacted at 80 DEG C
100min, cleaned repeatedly with deionized water, drying obtains viscose glue-beta-schardinger dextrin composite.（2）Konjaku flour is disperseed under normal temperature
In deionized water, bath raio 1:50, glutaraldehyde is added, the volume ratio of wherein glutaraldehyde and konjaku amidin is 1:10, mixing
Stir, be then slowly added into the 10g/L polyamide-amide PAMAM aqueous solution, the wherein PAMAM aqueous solution and konjaku flour is water-soluble
The volume ratio of liquid is 1:6, after reacting 24h, washed repeatedly with distilled water and ethanol, obtain PAMAM modified konjakus after drying.（3）
By weight percentage, by 49% viscose glue-beta-schardinger dextrin composite and 49%PAMAM modified konjakus, 2% cetyl trimethyl
Ammonium bromide is successively scattered in deionized water, bath raio 1:50, after ultrasonic mixing is uniform, at the uniform velocity stirring reaction 24h under normal temperature；Then
Pour into mould, be put into 1min in liquid nitrogen, be placed in pre-freeze 6h in -20 DEG C of refrigerators after taking-up, in -80 DEG C of Thermo ultra low temperature freezers
6h is freezed, 48h in freeze dryer is then placed in and obtains viscose glue/three-dimensional porous composite of konjaku/cyclodextrin.（4）Prepare 1mol/
L liquor zinci chloridi, 1mol/L sodium hydrate aqueous solution, the sodium hydroxide solution and liquor zinci chloridi is then added dropwise
Volume ratio be 1:1, after ultrasonic mixing is uniform, it is slowly added to lauryl sodium sulfate, the lauryl sodium sulfate and chlorination
The mass ratio of zinc is 2:1, ultrasonic 2h, 160 DEG C of reaction 9h in reactor are moved to, cleaned, centrifuged repeatedly with ethanol and deionized water,
Zinc oxide nanoparticle is obtained after drying process.（5）PAMAM and zinc nitrate hexahydrate are configured to 10g/L and 1mol/L respectively
The aqueous solution, the volume ratio of PAMAM and the zinc nitrate hexahydrate aqueous solution is 2:1, after being mixed evenly, move to reactor
In 200 DEG C reaction 5h, cleaned repeatedly with ethanol and deionized water, centrifuge, Zinc oxide nanoparticle obtained after drying process.（6）
Zinc oxide nanoparticle in step 5 is configured to the aqueous solution of mass fraction 1%, then by viscose glue/konjaku in step 4/
The three-dimensional porous composite of cyclodextrin is immersed in 45min in the nano zine oxide aqueous solution, bath raio 1:10, use deionized water after taking-up
Rinse, dry repeatedly；Then Zinc oxide nanoparticle in step 6 is configured to the aqueous solution of mass fraction 1%, by above-mentioned three
Tie up and composite porous be immersed in 45min in the nano zine oxide aqueous solution, bath raio 1:10, rushed repeatedly with deionized water after taking-up
Wash, dry, one layer of nano zine oxide is so far assembled into the surface of three-dimensional porous composite, is then repeated once above-mentioned behaviour
Make, obtain the three-dimensional porous composite of cellulose base of supported nano zinc oxide.
Embodiment 3：
（1）After stalk is shredded, it is scattered in deionized water, bath raio 1:50, then add beta-schardinger dextrin, wherein beta-schardinger dextrin and
The mass ratio of stalk is 2:1, after being mixed evenly, 100g/L sodium metaperiodate is added, lucifuge reacts 60min at 80 DEG C,
Cleaned repeatedly with deionized water, drying obtains stalk-beta-schardinger dextrin composite.（2）Under normal temperature by konjaku flour be scattered in from
In sub- water, bath raio 1:50, glutaraldehyde is added, the volume ratio of wherein glutaraldehyde and konjaku amidin is 1:10, mix equal
It is even, it is then slowly added into the body of the 100g/L polyamide-amide PAMAM aqueous solution, wherein the PAMAM aqueous solution and konjaku amidin
Product is than being 1:10, after reacting 24h, washed repeatedly with distilled water and ethanol, obtain PAMAM modified konjakus after drying.（3）By weight
Percentages, 45% stalk-beta-schardinger dextrin composite and 50%PAMAM modified konjakus, 5% polyethylene glycol are successively scattered in
In ionized water, bath raio 1:50, after ultrasonic mixing is uniform, at the uniform velocity stirring reaction 24h under normal temperature；It is subsequently poured into mould, is put into liquid
1min in 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
48h obtains stalk/three-dimensional porous composite of konjaku/cyclodextrin in freeze dryer.（4）1mol/L liquor zinci chloridi is prepared, so
1mol/L sodium hydrate aqueous solution is added dropwise afterwards, the volume ratio of the sodium hydroxide solution and liquor zinci chloridi is 2:1, surpass
After sound is well mixed, lauryl sodium sulfate is slowly added to, the mass ratio of the lauryl sodium sulfate and zinc chloride is 3:1,
Ultrasonic 2h, 160 DEG C of reaction 12h in reactor are moved to, cleaned with ethanol and deionized water, centrifuge, obtained after drying process repeatedly
Zinc oxide nanoparticle.（5）PAMAM and zinc nitrate hexahydrate are configured to 50g/L and the 1mol/L aqueous solution respectively, it is described
The volume ratio of PAMAM and the zinc nitrate hexahydrate aqueous solution is 5:1, after being mixed evenly, move to 200 DEG C of reactions in reactor
5h, cleaned repeatedly with ethanol and deionized water, centrifuge, Zinc oxide nanoparticle is obtained after drying process.（6）By in step 5
Zinc oxide nanoparticle is configured to the aqueous solution of mass fraction 5%, then that stalk/konjaku in step 4/cyclodextrin is three-dimensional more
Hole composite material is immersed in 60min in the nano zine oxide aqueous solution, bath raio 1:10, rinsed, dried repeatedly with deionized water after taking-up
It is dry；Then Zinc oxide nanoparticle in step 6 is configured to the aqueous solution of mass fraction 5%, will be above-mentioned three-dimensional porous compound
Material is immersed in 60min in the nano zine oxide aqueous solution, bath raio 1:10, rinsed, dried, so far repeatedly with deionized water after taking-up
One layer of nano zine oxide has been assembled into the surface of three-dimensional porous composite, aforesaid operations has then been repeated twice, is loaded
The three-dimensional porous composite of cellulose base of nano zine oxide.
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 (8)
- A kind of 1. preparation method of the three-dimensional porous composite of the cellulose base of supported nano zinc oxide, it is characterised in that：（1）Cellulosic material is scattered in deionized water, bath raio 1:50, beta-schardinger dextrin is then added, after being mixed evenly, 1-100g/L sodium metaperiodate is added, lucifuge reacts 60-300min at 50-80 DEG C, is cleaned, dried repeatedly with deionized water To cellulose-beta-schardinger dextrin composite；（2）Konjaku flour is scattered in deionized water under normal temperature, bath raio 1:50, add glutaraldehyde, wherein glutaraldehyde and konjaku flour The volume ratio of the aqueous solution is 1:10, it is mixed evenly, is then slowly added into the 1-100g/L polyamide-amide PAMAM aqueous solution, The volume ratio of wherein the PAMAM aqueous solution and konjaku amidin is 1:1-1:10, after reacting 24h, with distilled water and ethanol repeatedly Washing, obtain PAMAM modified konjakus after drying；（3）By weight percentage, by 40-60% celluloses-beta-schardinger dextrin composite and 40-60% PAMAM modified konjakus, 1-5% pore-foaming agents are successively scattered in deionized water, bath raio 1:50, after ultrasonic mixing is uniform, at the uniform velocity stirring reaction 24h under normal temperature； It is subsequently poured into mould, is put into 1min in liquid nitrogen, pre-freeze 6h in -20 DEG C of refrigerators, -80 DEG C of Thermo ultralow temperature ices is placed in after taking-up 6h is freezed in case, 48h in freeze dryer is then placed in and obtains cellulose/three-dimensional porous composite of konjaku/cyclodextrin；（4）1mol/L liquor zinci chloridi is prepared, 1mol/L sodium hydrate aqueous solution is then added dropwise, ultrasonic mixing is uniform Afterwards, lauryl sodium sulfate is slowly added to, ultrasonic 2h, 160 DEG C of reaction 6-12h in reactor are moved to, with ethanol and deionized water Clean repeatedly, centrifuge, obtain Zinc oxide nanoparticle after drying process；（5）PAMAM and zinc nitrate hexahydrate are configured to 1-100g/L and the 1mol/L aqueous solution respectively, are mixed evenly Afterwards, 200 DEG C of reaction 5h in reactor are moved to, cleaned repeatedly with ethanol and deionized water, centrifuge, zinc oxide is obtained after drying process Nano particle；（6）Zinc oxide nanoparticle in step 4 is configured to the mass fraction 0.1-5% aqueous solution, then by step 3 Cellulose/three-dimensional porous composite of konjaku/cyclodextrin be immersed in 30-60min in the nano zine oxide aqueous solution, bath raio 1: 10, rinsed, dried repeatedly with deionized water after taking-up；Then the Zinc oxide nanoparticle in step 5 is configured to mass fraction The 0.1-5% aqueous solution, above-mentioned three-dimensional porous composite is immersed in 30-60min in the nano zine oxide aqueous solution, bath raio 1: 10, rinsed repeatedly with deionized water after taking-up, dry, one layer of nano zine oxide is so far assembled into three-dimensional porous composite Surface, subsequent repeatedly aforesaid operations, determine the number of plies of three-dimensional porous composite material surface nano zine oxide assembling as needed.
- A kind of 2. preparation side of the three-dimensional porous composite of cellulose base of supported nano zinc oxide according to claim 1 Method, the cellulose fibre include native cellulose and regenerated cellulose.
- A kind of 3. preparation side of the three-dimensional porous composite of cellulose base of supported nano zinc oxide according to claim 1 Method, it is characterised in that the mass ratio of beta-schardinger dextrin described in step 2 and cellulose is 1:10-10:1.
- A kind of 4. preparation side of the three-dimensional porous composite of cellulose base of supported nano zinc oxide according to claim 1 Method, it is characterised in that the pore-foaming agent is one in lauryl sodium sulfate, cetyl trimethylammonium bromide, polyethylene glycol Kind is a variety of.
- A kind of 5. preparation side of the three-dimensional porous composite of cellulose base of supported nano zinc oxide according to claim 1 Method, it is characterised in that the volume ratio of the sodium hydroxide solution and liquor zinci chloridi is 1:2-2:1.
- A kind of 6. preparation side of the three-dimensional porous composite of cellulose base of supported nano zinc oxide according to claim 1 Method, it is characterised in that the mass ratio of the lauryl sodium sulfate and zinc chloride is 1:1-3:1.
- A kind of 7. preparation side of the three-dimensional porous composite of cellulose base of supported nano zinc oxide according to claim 1 Method, it is characterised in that the volume ratio of PAMAM and the zinc nitrate hexahydrate aqueous solution is 1:1-5:1.
- A kind of 8. three-dimensional porous composite of cellulose base of the supported nano zinc oxide obtained by claim 1 preparation method.
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| CN109810483A (en) * | 2019-02-28 | 2019-05-28 | 合肥工业大学 | A kind of modifying nanometer cellulose lactic acid composite material and preparation method thereof |
| CN109984188A (en) * | 2019-04-12 | 2019-07-09 | 广西科技师范学院 | A kind of antistaling agent for litchi and preparation method thereof |
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| CN109810483B (en) * | 2019-02-28 | 2021-02-05 | 合肥工业大学 | Nano-cellulose modified polylactic acid composite material and preparation method thereof |
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| CN111793318A (en) * | 2020-08-02 | 2020-10-20 | 特固(江苏)塑料制品有限公司 | Plastic storage cabinet and preparation method thereof |
| CN115093614A (en) * | 2022-06-28 | 2022-09-23 | 江南大学 | Protective starch-based film and preparation method and application thereof |
| CN115093614B (en) * | 2022-06-28 | 2023-03-24 | 江南大学 | Protective starch-based film and preparation method and application thereof |
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