CN107670515A - A kind of high-hydrophilic inorganic-organic hybrid antibacterial ultrafiltration membrane and preparation method thereof - Google Patents
A kind of high-hydrophilic inorganic-organic hybrid antibacterial ultrafiltration membrane and preparation method thereof Download PDFInfo
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- CN107670515A CN107670515A CN201710910610.9A CN201710910610A CN107670515A CN 107670515 A CN107670515 A CN 107670515A CN 201710910610 A CN201710910610 A CN 201710910610A CN 107670515 A CN107670515 A CN 107670515A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
- B01D71/68—Polysulfones; Polyethersulfones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/36—Hydrophilic membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/48—Antimicrobial properties
Abstract
The invention discloses a kind of high-hydrophilic inorganic-organic hybrid antibacterial ultrafiltration membrane and preparation method thereof.Preparation method of the present invention will mix the nano-TiO of copper using blending technology2Milipore filter is made with polysulfones blending, blade coating in particle, and preparation method technique is simple, is film-made progress synchronous with membrane modifying, and efficiency high, cost is low, easily realizes industrialization.The high-hydrophilic inorganic-organic hybrid antibacterial ultrafiltration membrane of the present invention mixes copper nano-TiO due to the addition of2Particle, good hydrophilic property, flux is big, and anti-soil anti-microbial property is excellent, overcomes that existing polysulphone super-filter membrane hydrophily is poor, the problem of easily polluting, and is widely used in the fields such as steel machinery factory, sewage and drinking water treatment, food processing, petrochemical industry and papermaking printing and dyeing.
Description
Technical field
The present invention relates to technical field of membrane separation, and in particular to a kind of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane
And preparation method thereof.
Background technology
Hyperfiltration technique is a kind of using static pressure difference as motive force, is acted on according to the microporous entrapment on film surface to carry out separation concentration
Membrane technology.Ultra-filtration process because without phase transformation, separative efficiency is high, simple to operate, energy consumption is low, easily amplify the advantages that, by people
Increasing concern, is one of focus of domestic and international UF membrane area research.But fouling membrane is always to restrict hyperfiltration technique hair
One of obstruction of exhibition, and it is badly in need of the major issue solved.
Fouling membrane mainly includes machine pollution and biological pollution, and organic contamination refers to protein in feed liquid, organic matter etc.
The caused pollution in film surface and fenestra is adsorbed, and biological pollution refers to pollute caused by the microorganisms such as the bacterium in feed liquid.
Biological pollution is to influence milipore filter in water treatment procedure an important factor for effluent characteristics, and biological pollution can cause permeability of the membrane
It can be reduced with separating property, it is necessary to which periodically constantly cleaning or replacing, has had a strong impact on the service life and efficiency of film, added
Use cost.
It has proven convenient that loading antibacterial material on film surface, structure has the film surface of anti-microbial property, Ke Yiyou for many researchs
Effect reduces biological pollution.
Anti-biotic material can be divided mainly into inorganic, organic and natural polymer antiseptic.Inorganic antibacterial material mainly utilizes
The antibacterial ability of the metals such as silver, zinc, copper, mercury, cadmium, lead, but mercury, cadmium, lead are harmful, therefore, silver, copper, zinc etc. from
Son occupies leading position in inorganic antiseptic.In addition inorganic antibacterial material also has titanium dioxide, ammonium dihydrogen phosphate, lithium carbonate
Deng metallic compound.Current inorganic photocatalyst-type anti-biotic agent is mainly TiO2Antiseptic, TiO2Under the catalysis of ultraviolet light, have
The advantages that strong antibacterial, scope are wide, pollution-free, and TiO2With extremely strong hydrophily, adding in film matrix to improve
The hydrophily of film.The A of patent CN 105457504 disclose a kind of preparation of Novel Titanium dioxide nanoparticulate polymer hybridized film
Method, acted on by the blending of titanium dioxide, dopamine and polymer, greatly increase the hydrophily of hybridization film material, significantly
Lift the separating property of film.
Although as described above, TiO2Inorganic antibacterial material has a variety of advantages, but there is also some shortcomings, it is mainly showed
Antibacterial ability can be exactly lost under non-illuminated conditions, and in the case where Weak ultraviolet excites, photocatalytic activity deficiency, hydraulic performance decline.
And non-illuminated conditions are more suitable for the growth and breeding of bacterium.Therefore, it is necessary to take measures to improve its anti-microbial property, make it unglazed
Also there is antimicrobial effect according under the conditions of；Its photocatalytic activity is improved, makes its photocatalysis antibacterial rate higher.Copper metal and copper ion exist
Sterilizing ability in metal is only second to argent, but its price is well below silver.The A of patent CN 104437139 are preparing copper
On the basis of being nano-particle, copper system nano particle, which is soughed with self-control hydrophily sulfonated polyether, to be blended into polyethers and soughs in matrix,
Obtained milipore filter has excellent anti-microbial property.By copper ion and TiO2It is compound, copper can be utilized under non-illuminated conditions
Ion kills bacterium so that TiO2Also there is certain anti-microbial property under non-illuminated conditions；And research shows, copper doped
Ion can improve TiO2Photocatalytic activity, so as to improve TiO2Anti-microbial property.
There is presently no see mixing copper nano-TiO on utilizing2Particle blending prepares milipore filter and opened applied to water process
The report in hair field, therefore, using mixing copper nano-TiO2The hydrophilic antimicrobial performance of particle applies it to water treatment field, improves
The antipollution and anti-microbial property of milipore filter, there is very big development prospect.
The content of the invention
The defects of in order to overcome prior art with deficiency, it is an object of the invention to provide a kind of high-hydrophilic it is inorganic-have
Machine hydridization antibacterial ultrafiltration membrane, the good hydrophilic property of the milipore filter, flux is big, and anti-soil anti-microbial property is excellent.
The present invention also aims to provide a kind of preparation of described high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane
Method.The preparation method will mix the nano-TiO of copper using blending technology2Milipore filter is made with polysulfones blending, blade coating in particle, improves
It is hydrophilic at the same cause PS membrane there is anti-microbial property, technique is simple, and cost is low, it is easy to accomplish industrialization.
The purpose of the present invention is achieved through the following technical solutions.
A kind of preparation method of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane, comprises the following steps：
（1）Mix copper nano-TiO2The preparation of particle
At room temperature by TiO2Particle ultrasonic disperse is dried immediately in copper nitrate solution after ultrasonic disperse, roasting, is obtained mixing copper and is received
Rice TiO2Particle；
（2）The preparation of casting solution
Polysulfones and pore creating material are added in organic solvent, it is to be mixed be completely dissolved after, copper nano-TiO is mixed in addition2Particle, ultrasound point
Dissipate uniformly, vacuum defoamation, obtain casting solution；
（3）Casting solution is poured on the glass plate of dried and clean, is at the uniform velocity scratched with scraper uniformly, then puts glass plate immediately
Enter freezing film in pure water coagulating bath, protect hole processing after the entirely autonomous disengaging glass plate of diaphragm, then through washing, soaking, obtain
The high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane.
Further, step（1）In, the TiO2The mass ratio of copper nitrate in particle and copper nitrate solution is 16.85-
33.7:1。
Further, step（1）In, the solvent of the copper nitrate solution includes absolute ethyl alcohol.
Further, step（1）In, the time of the ultrasonic disperse is 10-15min.
Further, step（1）In, the temperature of the drying is 70-80 DEG C.
Further, step（1）In, the temperature of the roasting is 450-500 DEG C, time 2-2.5h.
Further, step（2）In, the polysulfones first dries 24h at 60 DEG C in an oven before use.
Further, step（2）In, the amount of the polysulfones accounts for the 14-18% of casting solution gross mass.
Further, step（2）In, the organic solvent is N-N dimethylformamides, N-N dimethyl acetamides, diformazan
One kind in base sulfoxide and 1-METHYLPYRROLIDONE.
Further, step（2）In, the amount of the organic solvent accounts for the 76-83.5% of casting solution gross mass.
Further, step（2）In, the pore creating material is one kind in polyvinylpyrrolidone and polyethylene glycol.
Further, step（2）In, the amount of the pore creating material accounts for the 2-4% of casting solution gross mass.
Further, step（2）In, it is described to mix copper nano-TiO2The amount of particle accounts for the 0.5-2% of casting solution gross mass.
Further, step（2）In, the temperature being completely dissolved that stirs is 65-75 DEG C.
Further, step（2）In, the time of the ultrasonic disperse is 10-15min.
Further, step（3）In, the temperature of the pure water coagulating bath is room temperature.
Further, step（3）In, the washing is to use pure water 24-48h.
Further, step（3）In, it is with glycerine-formalin that mass concentration is 20% that hole processing is protected in the immersion
Soak 12-24h.
Further, step（3）In, in the glycerine-formalin, the mass ratio of glycerine and formaldehyde is 19:1.
A kind of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane as made from the preparation method described in any of the above-described,
Pure water flux is 195-313.93L/ (m under 0.1MPa2H), to bovine serum albumin（BSA）Rejection in 89%-93%, it is right
The antibiotic rate of Escherichia coli is in 90%-93.73%；Water contact angle is 52 ° -57 °.
Compared with prior art, the invention has the advantages that and beneficial effect：
（1）The high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane of the present invention mixes copper nano-TiO due to the addition of2Particle, it is hydrophilic
Property it is good, flux is big, and anti-soil anti-microbial property is excellent, overcomes that existing polysulphone super-filter membrane hydrophily is poor, the problem of easily polluting, suitable extensively
For fields such as steel machinery factory, sewage and drinking water treatment, food processing, petrochemical industry and papermaking printing and dyeing；
（2）Preparation method technique of the present invention is simple, is film-made progress synchronous with membrane modifying, and efficiency high, cost is low, easily realizes industry
Change.
Embodiment
Technical solution of the present invention is described in further detail below in conjunction with specific embodiment, but the scope of the present invention is not
It is limited to this.
Embodiment 1
A kind of preparation of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane, specifically comprises the following steps：
（1）Mix copper nano-TiO2The preparation of particle：Weigh 1g copper nitrates to be dissolved in absolute ethyl alcohol, added after being completely dissolved
33.7g TiO2Particle, ultrasonic disperse 15min, after drying at 80 DEG C, 2.5h is calcined at 450 DEG C, obtains mixing copper nano-TiO2Grain
Son；
（2）The preparation of casting solution：Precise 8.0g fully dries 24h polysulfones and 2g polyvinyl pyrroles at 60 DEG C in an oven
Alkanone（Pore creating material）, it is added in 39.5g DMAs, mechanical agitation is completely dissolved polysulfones at 70 DEG C, then
Add 0.5g and mix copper TiO2Particle, after ultrasonic disperse 10min, the vacuum defoamation 1.5h under -0.1MPa, obtain casting solution；
（3）Casting solution after deaeration is poured on the glass plate of dried and clean, formation was at the uniform velocity scraped with 200 μm of scraper of thickness
Liquid primary membrane, then glass plate is put into pure water coagulating bath immediately at room temperature, inversion of phases generation solid film, treats that diaphragm is complete
It is autonomous depart from glass plate after, then through pure water wash 24h, mass concentration is 20% glycerine-formalin（Glycerine:Formaldehyde=19：1,
w/w）After soaking 12h guarantors hole processing, high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane is obtained.
After tested, the water contact angle of the inorganic-organic hybridization antibacterial ultrafiltration membrane of preparation is 56 °, pure water flux under 0.1MPa
For 240.98 L/ (m2H), the rejection to BSA is 91%, and the antibiotic rate to Escherichia coli is 91.37%.
It is not added with mixing copper TiO with what is prepared under above-mentioned steps the same terms2The milipore filter of particle, water contact angle are 66 °,
Pure water flux is 175.58 L/ (m under 0.1MPa2H), the rejection to BSA is 89%, and the antibiotic rate to Escherichia coli is
20%。
Embodiment 2
A kind of preparation of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane, specifically comprises the following steps：
（1）Mix copper nano-TiO2The preparation of particle：Weigh 1g copper nitrates to be dissolved in absolute ethyl alcohol, added after being completely dissolved
16.85g TiO2Particle, ultrasonic disperse 10min, after drying at 70 DEG C, 2h is calcined at 500 DEG C, obtains mixing copper nano-TiO2Particle；
（2）The preparation of casting solution：Precise 9.0g fully dries 24h polysulfones and 1.0g polyethylene pyrroles at 60 DEG C in an oven
Pyrrolidone（Pore creating material）, it is added in 39.0g 1-METHYLPYRROLIDONEs, mechanical agitation is completely dissolved polysulfones at 75 DEG C, then
Add 1.0g and mix copper TiO2Particle, after ultrasonic disperse 10min, the vacuum defoamation 1.5h under -0.1MPa, obtain casting solution；
（3）Casting solution after deaeration is poured on the glass plate of dried and clean, formation was at the uniform velocity scraped with 200 μm of scraper of thickness
Liquid primary membrane, then glass plate is put into pure water coagulating bath immediately at room temperature, inversion of phases generation solid film, treats that diaphragm is complete
It is autonomous depart from glass plate after, then through pure water wash 48h, mass concentration is 20% glycerine-formalin（Glycerine:Formaldehyde=19：1,
w/w）Soak after 24h protects hole processing, obtain and high arrive hydrophilic inorganic-organic hybrid antibacterial ultrafiltration membrane.
After tested, the water contact angle of the inorganic-organic hybridization antibacterial ultrafiltration membrane of preparation is 52 °, pure water flux under 0.1MPa
For 301.7 L/ (m2H), it is 92% to BSA rejections, the antibiotic rate to Escherichia coli is 93.14%.
It is not added with mixing copper TiO with what is prepared under above-mentioned steps the same terms2The milipore filter of particle, its water contact angle are 62 °,
Pure water flux is 189.27 L/ (m under 0.1MPa2H), the rejection to BSA is 89%, and the antibiotic rate to Escherichia coli is
20%。
Embodiment 3
A kind of preparation of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane, specifically comprises the following steps：
（1）Mix copper nano-TiO2The preparation of particle：Weigh 2g copper nitrates to be dissolved in absolute ethyl alcohol, added after being completely dissolved
50.55g TiO2Particle, ultrasonic disperse 13min, after drying at 75 DEG C, 2.3h is calcined at 475 DEG C, obtains mixing copper nano-TiO2Grain
Son；
（2）The preparation of casting solution：Precise 7.0g fully dries 24h polysulfones and 1g polyethylene glycol at 60 DEG C in an oven
（Pore creating material）, it is added in 41.75g DMAs, mechanical agitation is completely dissolved polysulfones at 65 DEG C, then adds
Enter 0.25g and mix copper TiO2Particle, ultrasonic disperse 10min, the vacuum defoamation 1.5h under -0.1MPa, obtain casting solution；
（3）Casting solution after deaeration is poured on the glass plate of dried and clean, formation was at the uniform velocity scraped with 200 μm of scraper of thickness
Liquid primary membrane, then glass plate is put into pure water coagulating bath immediately at room temperature, inversion of phases generation solid film, treats that diaphragm is complete
It is autonomous depart from glass plate after, then through pure water wash 36h, mass concentration is 20% glycerine-formalin（Glycerine:Formaldehyde=19：1,
w/w）After soaking 18h guarantors hole processing, high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane is obtained.
After tested, the water contact angle of the inorganic-organic hybridization antibacterial ultrafiltration membrane of preparation is 55 °, pure water flux under 0.1MPa
For 274.98 L/ (m2H), it is 92.99% to BSA rejections, the antibiotic rate to Escherichia coli is 93.73%.
It is not added with mixing copper TiO with what is prepared under above-mentioned steps the same terms2The milipore filter of particle, its water contact angle are 62 °,
Pure water flux is 184.12 L/ (m under 0.1MPa2H), the rejection to BSA is 90%, and the antibiotic rate to Escherichia coli is
19%。
Embodiment 4
A kind of preparation of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane, specifically comprises the following steps：
（1）Mix copper nano-TiO2The preparation of particle：Weigh 1g copper nitrates to be dissolved in absolute ethyl alcohol, added after being completely dissolved
16.85g TiO2Particle, ultrasonic disperse 15min, after drying at 80 DEG C, 2h is calcined at 450 DEG C, obtains mixing copper nano-TiO2Particle；
（2）The preparation of casting solution：Precise 8.0g fully dries 24h polysulfones and 1.5g polyethylene pyrroles at 60 DEG C in an oven
Pyrrolidone（Pore creating material）, it is added in 40g DMAs, mechanical agitation is completely dissolved polysulfones at 65 DEG C, then
Add 0.5g and mix copper TiO2Particle, ultrasonic disperse 10min, the vacuum defoamation 1.5h under -0.1MPa, obtain casting solution；
（3）Casting solution after deaeration is poured on the glass plate of dried and clean, formation was at the uniform velocity scraped with 200 μm of scraper of thickness
Liquid primary membrane, then glass plate is put into pure water coagulating bath immediately at room temperature, inversion of phases generation solid film, treats that diaphragm is complete
It is autonomous depart from glass plate after, then through pure water wash 24h, mass concentration is 20% glycerine-formalin（Glycerine:Formaldehyde=19：1,
w/w）After soaking 12h guarantors hole processing, high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane is obtained.
After tested, the water contact angle of the inorganic-organic hybridization antibacterial ultrafiltration membrane of preparation is 57 °, pure water flux under 0.1MPa
For 195.01 L/ (m2H), it is 89% to BSA rejections, the antibiotic rate to Escherichia coli is 92.78%.
It is not added with mixing copper TiO with what is prepared under above-mentioned steps the same terms2The milipore filter of particle, its water contact angle are 66 °,
Pure water flux is 175.58 L/ (m under 0.1MPa2H), the rejection to BSA is 89%, and the antibiotic rate to Escherichia coli is
20%。
Embodiment 5
A kind of preparation of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane, specifically comprises the following steps：
（1）Mix copper nano-TiO2The preparation of particle：Weigh 1g copper nitrates to be dissolved in absolute ethyl alcohol, added after being completely dissolved
33.7g TiO2Particle, ultrasonic disperse 15min, after drying at 80 DEG C, 2h is calcined at 450 DEG C, obtains mixing copper nano-TiO2Particle；
（2）The preparation of casting solution：Precise 9.0g fully dries 24h polysulfones and 2.0g polyethylene glycol at 60 DEG C in an oven
（Pore creating material）, it is added in 38g 1-METHYLPYRROLIDONEs, mechanical agitation is completely dissolved polysulfones at 75 DEG C, adds 1g and mixes
Copper TiO2Particle, ultrasonic disperse 10min, the vacuum defoamation 1.5h under -0.1MPa, obtain casting solution；
（3）Casting solution after deaeration is poured on the glass plate of dried and clean, formation was at the uniform velocity scraped with 200 μm of scraper of thickness
Liquid primary membrane, then glass plate is put into pure water coagulating bath immediately at room temperature, inversion of phases generation solid film, treats that diaphragm is complete
It is autonomous depart from glass plate after, then through pure water wash 48h, mass concentration is 20% glycerine-formalin（Glycerine:Formaldehyde=19：1,
w/w）After soaking 24h guarantors hole processing, high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane is obtained.
After tested, the water contact angle of the inorganic-organic hybridization antibacterial ultrafiltration membrane of preparation is 52 °, pure water flux under 0.1MPa
For 313.93 L/ (m2H), it is 93% to BSA rejections, the antibiotic rate to Escherichia coli is 93.4%.
It is not added with mixing copper TiO with what is prepared under above-mentioned steps the same terms2The milipore filter of particle, its water contact angle are 61 °,
Pure water flux is 195.37 L/ (m under 0.1MPa2H), the rejection to BSA is 90%, and the antibiotic rate to Escherichia coli is
19%。
The analysis result of embodiment 1 ~ 5 shows that the high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane of preparation is ensureing to cut
The hydrophily and antibiotic property of milipore filter are improved while staying rate.
Above example is only preferrred embodiment of the present invention, is only used for explaining the present invention, is not intended to limit the present invention, this
Change that art personnel are made under without departing from spirit of the invention, replacement, modification etc. all should belong to the guarantor of the present invention
Protect scope.
Claims (10)
1. a kind of preparation method of high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane, it is characterised in that comprise the following steps：
（1）Mix copper nano-TiO2The preparation of particle
At room temperature by TiO2Particle ultrasonic disperse is dried immediately in copper nitrate solution after ultrasonic disperse, roasting, is obtained mixing copper and is received
Rice TiO2Particle；
（2）The preparation of casting solution
Polysulfones and pore creating material are added in organic solvent, it is to be mixed be completely dissolved after, copper nano-TiO is mixed in addition2Particle, ultrasound point
Dissipate uniformly, vacuum defoamation, obtain casting solution；
（3）Casting solution is poured on the glass plate of dried and clean, is at the uniform velocity scratched with scraper uniformly, then puts glass plate immediately
Enter freezing film in pure water coagulating bath, protect hole processing after the entirely autonomous disengaging glass plate of diaphragm, then through washing, soaking, obtain
The high-hydrophilic inorganic-organic hybridization antibacterial ultrafiltration membrane.
2. preparation method according to claim 1, it is characterised in that step（1）In, the TiO2Particle and copper nitrate are molten
The mass ratio of copper nitrate in liquid is 16.85-33.7:1；The solvent of the copper nitrate solution includes absolute ethyl alcohol.
3. preparation method according to claim 1, it is characterised in that step（1）In, the time of the ultrasonic disperse is
10-15min；The temperature of the drying is 70-80 DEG C；The temperature of the roasting is 450-500 DEG C, time 2-2.5h.
4. preparation method according to claim 1, it is characterised in that step（2）In, the polysulfones is first drying before use
24h is dried in case at 60 DEG C；The amount of the polysulfones accounts for the 14-18% of casting solution gross mass.
5. preparation method according to claim 1, it is characterised in that step（2）In, the organic solvent is N-N diformazans
One kind in base formamide, N-N dimethyl acetamides, dimethyl sulfoxide (DMSO) and 1-METHYLPYRROLIDONE；The amount of the organic solvent
Account for the 76-83.5% of casting solution gross mass.
6. preparation method according to claim 1, it is characterised in that step（2）In, the pore creating material is polyvinyl pyrrole
One kind in alkanone and polyethylene glycol；The amount of the pore creating material accounts for the 2-4% of casting solution gross mass.
7. preparation method according to claim 1, it is characterised in that step（2）In, it is described to mix copper nano-TiO2Particle
Amount accounts for the 0.5-2% of casting solution gross mass.
8. preparation method according to claim 1, it is characterised in that step（2）In, it is described to stir the temperature being completely dissolved
For 65-75 DEG C；The time of the ultrasonic disperse is 10-15min.
9. preparation method according to claim 1, it is characterised in that step（3）In, the temperature of the pure water coagulating bath is
Room temperature；The washing is to use pure water 24-48h；It is with glycerine-formaldehyde that mass concentration is 20% that hole processing is protected in the immersion
Aqueous solution soaking 12-24h；In the glycerine-formalin, the mass ratio of glycerine and formaldehyde is 19:1.
10. a kind of high-hydrophilic inorganic-organic hybridization antibacterial surpasses as made from the preparation method described in any one of claim 1 ~ 9
Filter membrane, it is characterised in that pure water flux is 195-313.93L/ (m under 0.1MPa2H), to the rejection of bovine serum albumin
In 89%-93%, to the antibiotic rates of Escherichia coli in 90%-93.73%；Water contact angle is 52 ° -57 °.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110548401A (en) * | 2019-08-27 | 2019-12-10 | 武汉艾科滤膜技术有限公司 | Antibacterial ultrafiltration membrane component |
| CN110694478A (en) * | 2019-10-09 | 2020-01-17 | 宁波泰意德过滤技术有限公司 | Ultrafiltration membrane and preparation method thereof |
| CN110711501A (en) * | 2019-11-22 | 2020-01-21 | 深圳市君脉膜科技有限公司 | Preparation method of porous nano antibacterial particles and composite forward osmosis membrane |
| CN111804151A (en) * | 2020-07-27 | 2020-10-23 | 上海恩捷新材料科技有限公司 | MBR (membrane bioreactor) flat filter membrane for domestic sewage treatment and preparation method thereof |
| CN114984784A (en) * | 2022-06-10 | 2022-09-02 | 宁夏清研高分子新材料有限公司 | Modified titanium dioxide nanotube and polysulfone hybrid membrane and preparation method thereof |
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| CN110548401A (en) * | 2019-08-27 | 2019-12-10 | 武汉艾科滤膜技术有限公司 | Antibacterial ultrafiltration membrane component |
| CN110694478A (en) * | 2019-10-09 | 2020-01-17 | 宁波泰意德过滤技术有限公司 | Ultrafiltration membrane and preparation method thereof |
| CN110711501A (en) * | 2019-11-22 | 2020-01-21 | 深圳市君脉膜科技有限公司 | Preparation method of porous nano antibacterial particles and composite forward osmosis membrane |
| CN110711501B (en) * | 2019-11-22 | 2024-01-23 | 深圳市君脉膜科技有限公司 | Preparation method of porous nano antibacterial particles and composite forward osmosis membrane |
| CN111804151A (en) * | 2020-07-27 | 2020-10-23 | 上海恩捷新材料科技有限公司 | MBR (membrane bioreactor) flat filter membrane for domestic sewage treatment and preparation method thereof |
| CN114984784A (en) * | 2022-06-10 | 2022-09-02 | 宁夏清研高分子新材料有限公司 | Modified titanium dioxide nanotube and polysulfone hybrid membrane and preparation method thereof |
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Application publication date: 20180209 |