CN109745874A - A kind of preparation method of chloromethyl polyether ketone anti-pollution ultrafiltration membrane - Google Patents
A kind of preparation method of chloromethyl polyether ketone anti-pollution ultrafiltration membrane Download PDFInfo
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- CN109745874A CN109745874A CN201910200041.8A CN201910200041A CN109745874A CN 109745874 A CN109745874 A CN 109745874A CN 201910200041 A CN201910200041 A CN 201910200041A CN 109745874 A CN109745874 A CN 109745874A
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- polyether ketone
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- 239000012528 membrane Substances 0.000 title claims abstract description 91
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 title claims abstract description 78
- 229920001643 poly(ether ketone) Polymers 0.000 title claims abstract description 78
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 73
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000005266 casting Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000004048 modification Effects 0.000 claims abstract description 8
- 238000012986 modification Methods 0.000 claims abstract description 8
- 230000003373 anti-fouling effect Effects 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 239000008367 deionised water Substances 0.000 claims description 28
- 229910021641 deionized water Inorganic materials 0.000 claims description 28
- 239000003607 modifier Substances 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 7
- FSSPGSAQUIYDCN-UHFFFAOYSA-N 1,3-Propane sultone Chemical group O=S1(=O)CCCO1 FSSPGSAQUIYDCN-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- 229920002873 Polyethylenimine Polymers 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical group CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 239000003361 porogen Substances 0.000 claims 3
- 238000000614 phase inversion technique Methods 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000007790 scraping Methods 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 125000001424 substituent group Chemical group 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 27
- 210000002469 basement membrane Anatomy 0.000 abstract description 18
- 210000004379 membrane Anatomy 0.000 abstract description 17
- 239000003795 chemical substances by application Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 230000010148 water-pollination Effects 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 13
- 238000011056 performance test Methods 0.000 description 12
- 235000019441 ethanol Nutrition 0.000 description 6
- 238000002242 deionisation method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000004088 foaming agent Substances 0.000 description 4
- TZBAVQKIEKDGFH-UHFFFAOYSA-N n-[2-(diethylamino)ethyl]-1-benzothiophene-2-carboxamide;hydrochloride Chemical compound [Cl-].C1=CC=C2SC(C(=O)NCC[NH+](CC)CC)=CC2=C1 TZBAVQKIEKDGFH-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 150000002576 ketones Chemical class 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000004695 Polyether sulfone Substances 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 150000002500 ions Chemical group 0.000 description 2
- 238000001471 micro-filtration Methods 0.000 description 2
- 238000001728 nano-filtration Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- -1 alkene imines Chemical class 0.000 description 1
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical group ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000009881 electrostatic interaction Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to technical field of membrane, and in particular to a kind of preparation method of chloromethyl polyether-ketone antipollution ultrafiltration membrane.This method is using chloromethyl polyether-ketone as basal lamina material, it is dissolved in organic solvent and forms casting solution by standing and defoaming, chloromethyl polyether-ketone plate basement membrane is prepared using phase inversion, reselection is grafted obtained plate membrane with the big molecular modification agent of hydrophilic radical, then it is further introduced into amphoteric ion group and achievees the effect that surface hydrophilic modification, obtain chloromethyl polyether-ketone antipollution ultrafiltration membrane.The disadvantage that simple chloromethyl polyether-ketone ultrafiltration membrane hydrophily and contamination resistance difference can be made up using the method for the present invention is obtained the chloromethyl polyether-ketone ultrafiltration membrane with appropriate water flux and good antifouling property, extends the service life of ultrafiltration membrane.
Description
Technical field
The present invention relates to technical field of membrane, and in particular to a kind of preparation method of chloromethyl polyether-ketone antipollution ultrafiltration membrane.
Background technique
Compared to other isolation technics, membrane separation technique is simple with operating process, does not generate secondary pollution, phase does not occur
The advantages that change, energy saving is the important new and high technology for solving the problems, such as the contemporary energy, resource and environment.Currently, membrane separation technique
Micro-filtration (MF), ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO) etc. are broadly divided into according to pore size.
As described above, ultrafiltration membrane is the major class in membrane separation technique.Ultrafiltration membrane is that a kind of aperture specification is consistent, specified hole
Diameter range is 0.01 micron of micropore filtering film below.Appropriate pressure is imposed in the side of film, can be sifted out molten less than aperture
Matter molecule.Ultrafiltration membrane has wide practical use in fields such as food industry, pharmaceuticals industries, can be used for drug, fruit juice, dairy products
Deng concentration purification, pure water, mineral spring Water warfare etc..
Although being considered as most promising technology, there are this main problems of fouling membrane in application, i.e., in feed liquid
Macromolecules adsorption is deposited on film surface, causes Pore Blocking, causes flux that irreversible decaying occurs, and separating effect decline shows
As.Currently, membrane pollution problem seriously restricts the development and application of ultrafiltration membrane, is urgent problem to be solved in UF membrane application, such as
The stain resistance what improves ultrafiltration membrane is also one of hot spot of current research.Studies have shown that most pollutants macromolecular is hydrophilic
For the degree of absorption on property surface well below hydrophobic surface, hydrophilic surface has excellent antifouling property.Therefore, pass through enhancing
The hydrophily of ultrafiltration membrane surface, the antifouling property of Lai Tigao film play important work to expanding application field, saving operating cost
With.
As CN102626595A discloses formula and its preparation side of the industrial high-intensitive ultrafiltration polyether sulfone plate membrane of one kind
Method is coated with the casting of the polyether sulfone, Hydrophilic Nanofibrous cellulose crystal, pore-foaming agent of certain mass ratio on high strength non-woven fabric substrate
Film liquid passes through a series of process preparation film forming such as vacuum outgas, air bath, sizing bath.The deficiency of the technology is film build method
Complexity and uncertainty, cause the antipollution effect of ultrafiltration membrane not ideal enough.
If CN104667768A discloses a kind of preparation method of novel antipollution polysulfone ultrafiltration membrane, by polysulfones and pore-foaming agent
It is dissolved in solvent and prepares casting solution, be coated on non-woven fabrics supporting layer and prepare basement membrane using phase inversion, then ultraviolet/red
Surface grafting is carried out using cladding process under the conditions of outer, hydrophilic layer is formed in ultrafiltration membrane surface, improves antifouling property.The technology is not
Foot is that the method being modified to basement membrane is complex, and influence factor is more, such as light intensity, light application time, more difficult to modified result
Control.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of chloromethyl polyether-ketone antipollution ultrafiltration membrane, carry out to basement membrane
Surface hydrophilic modification is to solve the membrane pollution problem in existing membrane separation technique.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of preparation method of chloromethyl polyether-ketone antipollution ultrafiltration membrane, comprising the following steps: by chloromethyl polyether-ketone and pore
Agent is dissolved in organic solvent, and stirring obtains flat plate ultrafiltration membrane casting solution after standing and defoaming；Then the casting solution is existed
Film on matrix prepares chloromethyl polyether-ketone plate basement membrane using phase inversion in coagulating bath；By the plate basement membrane band
There is the big molecular modification agent of hydrophilic radical to carry out hydrophilic modifying, obtains modified chloromethyl polyether-ketone antipollution ultrafiltration membrane；It will
The Modified Membrane carries out second step hydrophilic modifying, introduces amphoteric ion group, and it is super to obtain final chloromethyl polyether-ketone antipollution
Filter membrane.
The chloromethyl polyether-ketone is the chloromethyl substituent of polyether-ketone, and structure is,
Wherein x=10-70%.
The pore-foaming agent is polyethylene glycol or polyvinylpyrrolidone.
The organic solvent is N-Methyl pyrrolidone or N,N-dimethylformamide.
The mass concentration of chloromethyl polyether-ketone is 10-20wt% in the casting solution, and pore-foaming agent mass concentration is 2-10wt%,
Mixing time is 4-10h, and the standing and defoaming time is 12-24h.
The phase inversion specifically: casting solution is taken on a glass it is appropriate, using being soaked after manual knifing cutter painting film
Enter in deionization water-bath, film forming Automatic-falling from glass plate is fully cured to casting solution and obtains chloromethyl polyether-ketone plate base
Film, wherein deionized water bath temperature is 10-25 DEG C, and gained wet-film thickness is 50-100 μm；The plate basement membrane be stored in from
In sub- water.
The hydrophilic modifying method particularly includes: chloromethyl polyether-ketone plate basement membrane is immersed in modifier solution, is controlled
Temperature and time makes modified molecules carry out graft reaction in membrane surface, obtains chloromethyl polyether-ketone antipollution ultrafiltration membrane；
The big molecular modification agent is polyethyleneimine, structural formula are as follows:
For the modifier solution using water, ethyl alcohol or methanol as solvent, the mass concentration of modifying agent is 3-10wt%；Graft reaction temperature
Degree is 20-70 DEG C；The reaction time is 1-5h；The modified chloromethyl polyether-ketone antipollution ultrafiltration membrane be stored in from
In sub- water；Modified chloromethyl polyether-ketone antipollution ultrafiltration membrane structure are as follows:。
Wherein x=10-70%.
The modified modifying agent of the second step is propane sultone, structural formula are as follows:;
For the modifier solution using ethyl alcohol as solvent, modifying agent mass concentration is 3-10wt%；The reaction temperature is 20-70 DEG C；
The reaction time is 1-6h；The final chloromethyl polyether-ketone antipollution ultrafiltration membrane is stored in deionized water.It is described final
Chloromethyl polyether-ketone antipollution ultrafiltration membrane structure are as follows:。
Wherein x=10-70%.
The advantages and positive effects of the present invention are:
1. film build method of the invention is easy to operate and is easy to control, it can guarantee that the film-formation result of basement membrane under the same terms is consistent
And it is good, be conducive to carry out hydrophilic modifying.
2. the present invention carries out hydrophilic modifying, reaction process letter to chloromethyl polyether-ketone ultrafiltration membrane using chemical surface treatment method
Single, mild condition, modified effect is stablized, and has good economy and the feature of environmental protection.Poly- second of the selection with a large amount of amidos first
For alkene imines as modifying agent, amido reactivity is high, easily reacts with the benzyl chloride group in chloromethyl polyether-ketone, completes in film surface
Crosslinking, guarantees the presence of hydrophilic radical.Second step is modified to introduce amphoteric ion group, makes its surrounding water molecules by electrostatic interaction
Electrostatic-dipole effect is generated, and combines closely hydrone to form hydrated sheath, effectively improves the hydrophilicity of film surface.
3. comparing simple chloromethyl polyether-ketone ultrafiltration membrane, chloromethyl polyether-ketone antipollution ultrafiltration membrane parent prepared by the present invention
Aqueous to significantly improve, flux recovery rate is up to 99.7%.
Specific embodiment
In order to make content of the present invention easily facilitate understanding, With reference to embodiment to work of the present invention
Process is described further, but protection scope of the present invention is not limited to the following examples.
Embodiment 1
It takes 15g chloromethyl polyether-ketone and 5g Macrogol 4000 to be dissolved in 80gN- methyl pyrrolidone, 5h is stirred after sealing,
Standing and defoaming 12h obtains the casting solution of 15wt%；Appropriate casting solution is taken on a glass, is 150 μm of scraper with intermembrane space is scraped
It is immersed in 15 DEG C of deionization water-baths after hand coatings, film forming is fully cured from glass plate after Automatic-falling, by base after casting solution
Film collection saves in deionized water.
The performance test of gained basement membrane is as follows: water contact angle is 79.3 °, pure water flux 439LMH, and flux recovery rate is
57.5%。
It takes 30g polyethyleneimine to be dissolved in 560g deionized water and obtains the modifier solution of 5.08wt%, it will be at 30 DEG C
The chloromethyl polyether-ketone basement membrane that 2d is saved in deionized water impregnates 3h in the solution and is modified, and obtains chloromethyl polyether-ketone anti-pollution
Ultrafiltration membrane is contaminated, is saved in deionized water.
The performance test of the modified chloromethyl polyether-ketone antipollution ultrafiltration membrane of gained is as follows: water contact angle is 56.6 °, pure
Water flux is 384LMH, and flux recovery rate is 86.8%.It is good that test result shows that ultrafiltration membrane prepared in the present embodiment has
Good antifouling property.
Embodiment 2
It takes 17g propane sultone to be dissolved in 402g ethyl alcohol and obtains the modifier solution of 4.06wt%, it will be in deionized water at 40 DEG C
The middle modified chloromethyl polyether-ketone antipollution ultrafiltration membrane of embodiment 1 for saving 2d impregnates 3h in the solution and is modified, and obtains
Final chloromethyl polyether-ketone antipollution ultrafiltration membrane saves in deionized water.
The performance test of gained chloromethyl polyether-ketone antipollution ultrafiltration membrane is as follows: water contact angle is 43.6 °, and pure water flux is
362LMH, flux recovery rate are 96.5%.Test result shows that ultrafiltration membrane prepared in the present embodiment has good anti-pollution
Metachromia energy.
Embodiment 3
It takes 12g chloromethyl polyether-ketone and 8g Macrogol 4000 to be dissolved in 79gN- methyl pyrrolidone, 5h is stirred after sealing,
Standing and defoaming 12h obtains the casting solution of 12wt%；Appropriate casting solution is taken on a glass, is 150 μm of scraper with intermembrane space is scraped
It is immersed in 15 DEG C of deionization water-baths after hand coatings, film forming is fully cured from glass plate after Automatic-falling, by base after casting solution
Film collection saves in deionized water.
The performance test of gained basement membrane is as follows: water contact angle is 78.3 °, pure water flux 558LMH, and flux recovery rate is
58.1%。
It takes 18.2g polyethyleneimine to be dissolved in 504g deionized water and obtains the modifier solution of 3.45wt%, it will at 40 DEG C
The chloromethyl polyether-ketone basement membrane for saving 2d in deionized water impregnates 1h in the solution and is modified, and it is anti-to obtain chloromethyl polyether-ketone
Ultrafiltration membrane is polluted, is saved in deionized water.
The performance test of the modified chloromethyl polyether-ketone antipollution ultrafiltration membrane of gained is as follows: water contact angle is 68.9 °, pure
Water flux is 459LMH, and flux recovery rate is 78.7%.
It takes 28.6g propane sultone to be dissolved in 382g ethyl alcohol and obtains the modifier solution of 6.97wt%, will gone at 30 DEG C
The chloromethyl polyether-ketone Modified Membrane that 2d is saved in ionized water is impregnated 2h in the solution and is modified, and final chloromethyl polyethers is obtained
Ketone antipollution ultrafiltration membrane saves in deionized water.
The performance test of gained chloromethyl polyether-ketone antipollution ultrafiltration membrane is as follows: water contact angle is 51.7 °, and pure water flux is
416LMH, flux recovery rate are 92.1%.Test result shows that ultrafiltration membrane prepared in the present embodiment has good anti-pollution
Metachromia energy.
Embodiment 4
It takes 20g chloromethyl polyether-ketone and 8g Macrogol 4000 to be dissolved in 72gN- methyl pyrrolidone, 10h is stirred after sealing,
Standing and defoaming 12h obtains the casting solution of 20wt%；Appropriate casting solution is taken on a glass, is 150 μm of scraper with intermembrane space is scraped
It is immersed in 15 DEG C of deionization water-baths after hand coatings, film forming is fully cured from glass plate after Automatic-falling, by base after casting solution
Film collection saves in deionized water.
The performance test of gained basement membrane is as follows: water contact angle is 77.8 °, pure water flux 352LMH, and flux recovery rate is
58.4 %。
It takes 39.3g polyethyleneimine to be dissolved in 381g deionized water and obtains the modifier solution of 9.29wt%, it will at 50 DEG C
The chloromethyl polyether-ketone basement membrane for saving 2d in deionized water impregnates 4h in the solution and is modified, and it is anti-to obtain chloromethyl polyether-ketone
Ultrafiltration membrane is polluted, is saved in deionized water.
The performance test of the modified chloromethyl polyether-ketone antipollution ultrafiltration membrane of gained is as follows: water contact angle is 53.2 °, pure
Water flux is 267LMH, and flux recovery rate is 91.0%.
It takes 20.4g propane sultone to be dissolved in 460g ethyl alcohol and obtains the modifier solution of 4.17wt%, will gone at 35 DEG C
The chloromethyl polyether-ketone Modified Membrane that 2d is saved in ionized water is impregnated 2h in the solution and is modified, and final chloromethyl polyethers is obtained
Ketone antipollution ultrafiltration membrane saves in deionized water.
The performance test of gained chloromethyl polyether-ketone antipollution ultrafiltration membrane is as follows: water contact angle is 43.2 °, and pure water flux is
241LMH, flux recovery rate are 95.1%.Test result shows that ultrafiltration membrane prepared in the present embodiment has good anti-pollution
Metachromia energy.
Embodiment 5
It takes 17g chloromethyl polyether-ketone and 8g Macrogol 4000 to be dissolved in 76gN- methyl pyrrolidone, 8h is stirred after sealing,
Standing and defoaming 12h obtains the casting solution of 17wt%；Appropriate casting solution is taken on a glass, is 150 μm of scraper with intermembrane space is scraped
It is immersed in 15 DEG C of deionization water-baths after hand coatings, film forming is fully cured from glass plate after Automatic-falling, by base after casting solution
Film collection saves in deionized water.
The performance test of gained basement membrane is as follows: water contact angle is 77.0 °, pure water flux 413LMH, and flux recovery rate is
57.6%。
It takes 36.1g polyethyleneimine to be dissolved in 375g deionized water and obtains the modifier solution of 8.76wt%, it will at 70 DEG C
The chloromethyl polyether-ketone basement membrane for saving 2d in deionized water impregnates 5h in the solution and is modified, and it is anti-to obtain chloromethyl polyether-ketone
Ultrafiltration membrane is polluted, is saved in deionized water.
The performance test of the modified chloromethyl polyether-ketone antipollution ultrafiltration membrane of gained is as follows: water contact angle is 51.3 °, pure
Water flux is 321LMH, and flux recovery rate is 91.5%.
It takes 38.6g propane sultone to be dissolved in 382g ethyl alcohol and obtains the modifier solution of 9.05wt%, will gone at 40 DEG C
The chloromethyl polyether-ketone Modified Membrane that 2d is saved in ionized water is impregnated 6h in the solution and is modified, and final chloromethyl polyethers is obtained
Ketone antipollution ultrafiltration membrane saves in deionized water.
The performance test of gained chloromethyl polyether-ketone antipollution ultrafiltration membrane is as follows: water contact angle is 37.2 °, and pure water flux is
308LMH, flux recovery rate are 99.7%.Test result shows that ultrafiltration membrane prepared in the present embodiment has good anti-pollution
Metachromia energy.
It should be noted that the foregoing is merely presently preferred embodiments of the present invention, embodiment of the present invention is illustrative
, without being restrictive, all other embodiments sides obtained according to the technique and scheme of the present invention by those skilled in the art
Formula also belongs to the scope of protection of the invention.
Claims (10)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115155337A (en) * | 2022-06-29 | 2022-10-11 | 福州大学 | A kind of preparation method of three-dimensional porous cross-linked anion exchange membrane |
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|---|---|---|---|---|
| CN104190265A (en) * | 2014-08-31 | 2014-12-10 | 浙江大学 | Low-pressure high-flux chlorine-containing polymer nanofiltration membrane with stable separation layer and preparation method thereof |
| CN106215701A (en) * | 2016-07-29 | 2016-12-14 | 林小城 | A kind of crosslinking hollow fiber anion-exchange membrane and preparation method thereof |
| CN107029555A (en) * | 2017-04-19 | 2017-08-11 | 大连理工大学 | A kind of solvent resistant NF membrane and preparation method thereof |
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2019
- 2019-03-15 CN CN201910200041.8A patent/CN109745874A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190265A (en) * | 2014-08-31 | 2014-12-10 | 浙江大学 | Low-pressure high-flux chlorine-containing polymer nanofiltration membrane with stable separation layer and preparation method thereof |
| CN106215701A (en) * | 2016-07-29 | 2016-12-14 | 林小城 | A kind of crosslinking hollow fiber anion-exchange membrane and preparation method thereof |
| CN107029555A (en) * | 2017-04-19 | 2017-08-11 | 大连理工大学 | A kind of solvent resistant NF membrane and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115155337A (en) * | 2022-06-29 | 2022-10-11 | 福州大学 | A kind of preparation method of three-dimensional porous cross-linked anion exchange membrane |
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