CN108991014A - A kind of preparation method of sepiolite supported chitosan-zinc antibacterial powder - Google Patents
A kind of preparation method of sepiolite supported chitosan-zinc antibacterial powder Download PDFInfo
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- CN108991014A CN108991014A CN201810793263.0A CN201810793263A CN108991014A CN 108991014 A CN108991014 A CN 108991014A CN 201810793263 A CN201810793263 A CN 201810793263A CN 108991014 A CN108991014 A CN 108991014A
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- 229910052624 sepiolite Inorganic materials 0.000 title claims abstract description 80
- 235000019355 sepiolite Nutrition 0.000 title claims abstract description 80
- 239000004113 Sepiolite Substances 0.000 title claims abstract description 78
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 53
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 50
- 239000011701 zinc Substances 0.000 title claims abstract description 50
- 239000000843 powder Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229920001661 Chitosan Polymers 0.000 claims abstract description 23
- 230000000845 anti-microbial effect Effects 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- 229910017604 nitric acid Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 239000003242 anti bacterial agent Substances 0.000 abstract description 10
- 229910052709 silver Inorganic materials 0.000 abstract description 6
- 239000004332 silver Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 235000012054 meals Nutrition 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 11
- 238000005342 ion exchange Methods 0.000 description 9
- 241000588724 Escherichia coli Species 0.000 description 7
- 241000191967 Staphylococcus aureus Species 0.000 description 7
- 229910021645 metal ion Inorganic materials 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 241000228197 Aspergillus flavus Species 0.000 description 4
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical group [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 4
- 229910001415 sodium ion Inorganic materials 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000009514 concussion Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010130 dispersion processing Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- -1 papermaking Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/06—Aluminium; Calcium; Magnesium; Compounds thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention discloses a kind of preparation method of chitosan-zinc sepiolite antibacterial powder.The present invention first mixes chitosan-acetic acid solution with zinc nitrate solution, forms chitosan-zinc antibacterial agent, and then chitosan-zinc antibacterial agent meal with wine is added dropwise in sepiolite virgin pulp liquid, obtains sepiolite supported chitosan-zinc antibacterial powder.The present invention replaces noble silver with zinc, reduce industrial cost, cheap chitosan is quoted simultaneously, not only reduce the usage amount of zinc, it further reduces the cost, chitosan plays peptizaiton and antibacterial action simultaneously, prevent the reunion of Nano-Zinc, chitosan and zinc play synergetic antibacterial effect simultaneously, significantly enhance the anti-microbial property of sepiolite antibacterial powder, even if using low-purity sepiolite, corresponding antibacterial action can equally be played, to promote the market competitiveness of sepiolite, increase the utility value of sepiolite, furthermore whole set process flow operations of the present invention are simple, it is reusable to filter antibacterial agent, use cost can be saved.
Description
Technical field
The present invention relates to field of material preparation, in particular to a kind of preparation side of sepiolite supported chitosan-zinc antibacterial powder
Method.
Background technique
Sepiolite is a kind of aqueous magnesium silicate of threadiness, it has specific surface area height, and (theoretical specific surface area is reachable
900m2/ g), porosity is big, thermal stability is good, adsorptivity is good (the strongest clay mineral of generally acknowledged adsorption capacity) and price is low
The features such as, wherein being mainly used for coating, papermaking, paint, ceramics, refractory material, industrial plastic, graphite, cosmetics, food medicine
The key areas such as product, fungus-resistant.Due to being widely present microorganism in human habitat, fertility is strong, if not being subject to
Control will seriously affect human lives' health, if using the widely used of sepiolite and having the characteristics that multiple advantage performance,
By the substance with antiseptic and mildew resistant ability in conjunction with sepiolite, is formed to have and kill or suppress growth of microorganism the one of breeding function
Class new function material, this will improve the competitiveness of sepiolite, while the use scope of further expansion sepiolite.
Currently, it in sepiolite antibacterial agent preparation synthesis process, is mainly mixed to form using inorganic antiseptic with sepiolite,
The anti-microbial property using the metal ions such as silver, copper, zinc is wherein referred mainly to, by ion exchange and the method for absorption by metal ion
It is supported on sepiolite and antibacterial agent is prepared, in addition to this, the metal for further including light excitation and having antibacterial ability aoxidizes
Object synthesizes and preparation with sepiolite.Study comparative maturity at this stage is the preparation that sepiolite carries the serial antibacterial powder of silver, mainly
Using the high-efficiency antimicrobial of nano silver, using technologies such as ion exchange and multilayer coating structures, in liquid phase environment, reducing agent is added,
Form nano silver, then with sodium ion exchange in sepiolite or be adsorbed in sepiolite surface, form sepiolite nanometer silver antimicrobial
Agent, research shows that numerous carrying nano silver sepiolite antibacterial powders reach Escherichia coli, staphylococcus aureus anti-microbial property
99% or more.Wherein the ion-exchange of technology maturation refers in liquid phase environment, and reducing agent is added, and is stirred and is utilized by power
Other metals replace the sodium ion in sepiolite, so that the metal ion with anti-microbial property is successfully supported on sepiolite,
The advantages of this method is maximumlly to swap metal ion and the sodium ion in sepiolite in liquid phase environment, reach
It is balanced to adsorption/desorption, it is easy to operate, it is only necessary to power stirring.Multilayer coating structure technology, one refer in ion exchange adsorption
Basis on, prevent in sepiolite sodium ion exchange metal ion be desorbed, to make metal ion point nano silver
Maximumlly it is adsorbed on sepiolite；Secondly referring to the metal ion for being adsorbed on sepiolite surface in order to prevent due to external environment
Variation falls off from sepiolite surface, and special adhesive, such as polyvinyl alcohol, glutaraldehyde etc. is added, and forms one on sepiolite surface
Layer protective film, increases sepiolite surface excess, to increase the anti-microbial property and stability of sepiolite antibacterial agent.Experiment card
Bright, ion exchange technique and multilayer coating structure technology are applied not only to monometallic, while being all suitable for bimetallic, such as silver-copper Hai Pao
Stone antibacterial powder etc..
Liquid-phase ion exchange and multilayer coating structure technology are although have been relatively mature, but still come with some shortcomings: liquid phase
For ion-exchange since reaction is to carry out in the solution, the metallic solutions such as silver form metal-sol, and metallic particles has group in colloid
Poly- tendency, to influence the mass production of nano-silver powder；Silver system anti-biotic material, it is more sensitive to light, easily occur under light illumination
Metachromatism seriously affects the appearance property of antibacterial agent；It additionally, there may be the problems such as process flow is complicated, with high costs, simultaneously
It is also possible to lead to silver-colored pollution.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the present invention provides a kind of sepiolite supported chitosan-zinc antibacterial powder
Preparation method.
The technical solution of the present invention is as follows:
A kind of preparation method of sepiolite supported chitosan-zinc antibacterial powder, includes the following steps:
(1) chitosan solution is prepared using acetum as solvent respectively and zinc nitrate solution is prepared with distilled water；
(2) zinc nitrate solution is mixed with chitosan solution, control pH is 3~6,20~65 DEG C and reacts 2~12 hours；
(3) chitosan-zinc antimicrobial obtained by step (2) is mixed with sepiolite virgin pulp liquid, 20~45 DEG C of reactions 12
It~24 hours, then filters, is dry, sepiolite supported chitosan-zinc antibacterial powder.
Further, in step (1), the concentration of chitosan solution is 5~10g/L, preferably 8~10g/L；Zinc nitrate solution
Concentration be 0.08~0.2mol/L, preferably 0.15~0.2mol/L.
Further, in step (1), the mass fraction of solvent acetic acid solution is 0.5~5%, more preferably 1%.
Further, in step (2), the hybrid mode of zinc nitrate solution and chitosan solution preferably by zinc nitrate solution by
It being added dropwise in chitosan solution, the volume ratio of zinc nitrate solution and chitosan solution is 0.9~1.1:1~1.2, more preferably 1:
1~1.2.
Further, in step (2), pH is more preferably 4~5, and more preferable 25~40 DEG C of reaction temperature, the reaction time is more excellent
It selects 6~8 hours.
Further, in step (3), the preparation method of sepiolite virgin pulp liquid is the sepiolite water dispersion processing after purifying
0.5~4 hour；The mass concentration of sepiolite virgin pulp liquid is 3~15%, preferably 10~12%.
Further, in step (3), the hybrid mode of chitosan-zinc antimicrobial and sepiolite virgin pulp liquid preferably will
Chitosan-zinc antimicrobial is added dropwise in sepiolite virgin pulp liquid, chitosan-zinc antimicrobial and sepiolite virgin pulp liquid
Volume ratio is 1~4:1, more preferably 2:1.
Further, in step (3), more preferable 25~30 DEG C of reaction temperature, the reaction time more preferable 18~21 hours.
The beneficial effects of the present invention are:
The present invention by natural antibacterial agent chitosan in conjunction with metallic zinc, the introducing of zinc, instead of the usage amount of noble silver,
Industrial cost is significantly reduced, while quoting cheap chitosan, the usage amount of zinc is not only reduced, further reduced into
This, while chitosan plays peptizaiton and antibacterial action, prevents the reunion of Nano-Zinc, while chitosan and zinc can play association
Same antibacterial action significantly enhances the anti-microbial property of sepiolite antibacterial powder, so that even if using low-purity sepiolite, equally
Corresponding antibacterial action can be played.In addition, process flow of the invention is easy to operate, and filtering antibacterial agent is reusable, also
The effect for saving use cost can be further functioned as.
Detailed description of the invention
Fig. 1 is the 1 sepiolite supported chitosan-zinc antibacterial powder of gained of embodiment to staphylococcus aureus antibacterial effect figure.
Fig. 2 is the 1 sepiolite supported chitosan-zinc antibacterial powder of gained of embodiment to Escherichia coli antibacterial effect figure.
Fig. 3 is the 1 sepiolite supported chitosan-zinc antibacterial powder of gained of embodiment to Aspergillus flavus antibacterial effect figure.
Fig. 4 is the 2 sepiolite supported chitosan-zinc antibacterial powder of gained of embodiment to staphylococcus aureus antibacterial effect figure.
Fig. 5 is the 2 sepiolite supported chitosan-zinc antibacterial powder of gained of embodiment to Escherichia coli antibacterial effect figure.
Fig. 6 is the 2 sepiolite supported chitosan-zinc antibacterial powder of gained of embodiment to Aspergillus flavus antibacterial effect figure.
Fig. 7 is preparation and the testing process block diagram of antibacterial powder of the present invention.
Specific embodiment
The present invention is described in further details combined with specific embodiments below, but the present invention is not limited thereto.
Embodiment 1
(1) meerschaum pretreatment: the water dispersion that the sepiolite after purification carries out 1h is handled first, is configured to mass concentration
For 5% sepiolite virgin pulp liquid；
(2) 1g chitosan is dissolved in 100ml, mass fraction to be configured to the chitosan of 10g/L in 1% acetum
Solution, while 100ml, 0.1mol/L zinc nitrate solution are prepared with distilled water；
(3) 10ml, 0.1mol/L zinc nitrate solution are measured, the chitosan-acetic acid solution of 10ml, 10g/L are added dropwise to
In, pH=4.0, the pH can be within the scope of 3-6,25 DEG C of concussion reaction 2h；
(4) chitosan-zinc antimicrobial obtained by step (3) is added dropwise to the sepiolite virgin pulp liquid in step (1)
In, 25 DEG C of reactions are for 24 hours.
(5) mixing material obtained by step (4) is filtered, 60 DEG C of dry 12h obtain sepiolite supported chitosan-zinc antibacterial
Powder, grinding cross 200 meshes, do Escherichia coli, staphylococcus aureus antibacterial experiment, antibacterial dense using antibacterial around-France and minimum
The judgement of degree method show that sepiolite supported chitosan-zinc antibacterial powder is to staphylococcus aureus, Escherichia coli Aspergillus flavus antibacterial ring size
Diameter is respectively 43.30mm, 30.20mm, 42.12mm, and antibacterial effect figure is as shown in Figures 1 to 3.
Embodiment 2
(1) meerschaum pretreatment: the water dispersion that the sepiolite after purification carries out 1h is handled first, is configured to mass concentration
For 10% sepiolite virgin pulp liquid；
(2) 1g chitosan is dissolved in 200ml, in 1% acetum of mass fraction, is configured to the chitosan solution of 5g/L,
100ml, 0.08mol/L zinc nitrate solution are prepared with distilled water simultaneously；
(3) 10ml, 0.08mol/L zinc nitrate solution are measured, the chitosan-acetic acid solution of 10ml, 5g/L are added dropwise to
In, pH=6.0,65 DEG C of concussion reaction 4h；
(4) chitosan-zinc antimicrobial obtained by step (3) is added dropwise to sepiolite virgin pulp liquid obtained by step (1)
In, 45 DEG C of reaction 21h.
(5) mixing material obtained by step (4) is filtered, 60 DEG C of dry 12h obtain sepiolite supported chitosan-zinc antibacterial
200 meshes are crossed in powder, grinding, and tabletting is fabricated to 10mm original piece and does Escherichia coli, staphylococcus aureus antibacterial experiment, utilize suppression
Collarium method and the judgement of minimal inhibitory concentration method show that chitosan-zinc sepiolite antibacterial powder is to Escherichia coli, Staphylococcus aureus
Bacterium, Aspergillus flavus inhibition zone diameter are respectively 34.20mm, 29.62mm, 20.40mm, and antibacterial effect figure is as shown in Figs. 4-6.
Claims (8)
1. a kind of preparation method of sepiolite supported chitosan-zinc antibacterial powder, which comprises the steps of:
(1) chitosan solution is prepared by solvent of acetum, zinc nitrate solution is prepared with distilled water；
(2) zinc nitrate solution is mixed with chitosan solution, control pH is 3~6,20~65 DEG C and reacts 2~12 hours；
(3) chitosan-zinc antimicrobial obtained by step (2) is mixed with sepiolite virgin pulp liquid, 20~45 DEG C of reactions 12~24
Hour, it then filters, is dry, sepiolite supported chitosan-zinc antibacterial powder.
2. the preparation method of sepiolite supported chitosan-zinc antibacterial powder according to claim 1, which is characterized in that step
(1) in, the concentration of chitosan solution is 5~10g/L；The concentration of zinc nitrate solution is 0.08~0.2mol/L.
3. the preparation method of sepiolite supported chitosan-zinc antibacterial powder according to claim 1, which is characterized in that step
(1) in, the mass fraction of solvent acetic acid solution is 0.5~5%.
4. the preparation method of sepiolite supported chitosan-zinc antibacterial powder according to claim 1, which is characterized in that step
(2) in, the hybrid mode of zinc nitrate solution and chitosan solution is that zinc nitrate solution is added dropwise in chitosan solution, nitric acid
The volume ratio of zinc solution and chitosan solution is 0.9~1.1:1~1.2.
5. the preparation method of sepiolite supported chitosan-zinc antibacterial powder according to claim 1, which is characterized in that step
(2) in, pH is 4~5, and reaction temperature is 25~40 DEG C, and the reaction time is 6~8 hours.
6. the preparation method of sepiolite supported chitosan-zinc antibacterial powder according to claim 1, which is characterized in that step
(3) in, the preparation method of sepiolite virgin pulp liquid is that the sepiolite water dispersion after purifying is handled 0.5~4 hour；Sepiolite magma
The mass concentration of liquid is 3~15%.
7. the preparation method of sepiolite supported chitosan-zinc antibacterial powder according to claim 1, which is characterized in that step
(3) in, the hybrid mode of chitosan-zinc antimicrobial and sepiolite virgin pulp liquid be by chitosan-zinc antimicrobial dropwise
It is added in sepiolite virgin pulp liquid, the volume ratio of chitosan-zinc antimicrobial and sepiolite virgin pulp liquid is 1~4:1.
8. the preparation method of sepiolite supported chitosan-zinc antibacterial powder according to claim 1, which is characterized in that step
(3) in, reaction temperature is 25~30 DEG C, and the reaction time is 18~21 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109349272A (en) * | 2018-10-09 | 2019-02-19 | 湘潭大学 | A kind of preparation method of sepiolite supported Chitosan-Silver antibacterial powder |
| CN109744256A (en) * | 2019-01-21 | 2019-05-14 | 河南永泽环境科技有限公司 | A kind of preparation method of water-feeding leaching pool bed course antibacterial filtrate |
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Application publication date: 20181214 |