CN105727763B - A kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane - Google Patents
A kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane Download PDFInfo
- Publication number
- CN105727763B CN105727763B CN201610129859.1A CN201610129859A CN105727763B CN 105727763 B CN105727763 B CN 105727763B CN 201610129859 A CN201610129859 A CN 201610129859A CN 105727763 B CN105727763 B CN 105727763B
- Authority
- CN
- China
- Prior art keywords
- nanofiltration membrane
- composite nanofiltration
- polyamide composite
- fluorine
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B01D71/56—Polyamides, e.g. polyester-amides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
-
- 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
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
Abstract
The invention discloses a kind of preparation methods of fluorine-containing polyamide composite nanofiltration membrane.This method mainly includes the following steps that：Polyether sulfone ultrafiltration membranes are prepared using phase inversion；Film is immersed in successively again in the aqueous phase monomers piperazine and organic phase monomer pyromellitic trimethylsilyl chloride of low concentration, polyamide composite nanofiltration membrane is made through interfacial polymerization；After carrying out surface amination to polyamide composite nanofiltration membrane using surface grafting triethylene tetramine, then by Michael addition reaction modification Hexafluorobutyl mathacrylate, prepare fluorine-containing polyamide composite nanofiltration membrane.The advantage of the invention is that：The preparation method is combined surface grafting with Michael's addition, process is simple to operation, compared with traditional polyamide composite nanofiltration membrane, fluorine-containing polyamide composite nanofiltration membrane prepared by this method is under relatively low operating pressure (0.2MPa), with higher water flux and separating property, and show good anti pollution property.
Description
Technical field
The present invention relates to a kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane, the technology of preparing for belonging to composite membrane is led
Domain.
Background technology
Nanofiltration is separation accuracy between a kind of reverse osmosis pressure-driven membrane separation technique between ultrafiltration, nanofiltration
The aperture of film is in 0.5-2nm, and operating pressure is usually 0.3-1.0MPa, and molecular cut off is in the range of 200-1000.With it is anti-
Infiltration is compared, and NF membrane has higher water flux under relatively low operating pressure, has to divalent ion and organic molecule
High rejection.NF membrane is widely used in the necks such as bitter desalination, treatment of dyeing wastewater, biochemical preparation and drug purification
Domain.
At present, NF membrane is divided into two class of anisotropic membrane and composite membrane by textural classification.Composite membrane is porous basement membrane and covering
It is formed in epilamellar fine and close active layer.Wherein, active layer is for retaining divalent ion or organic molecule, and porous support layer
Mechanical strength needed for film is provided.The method for preparing composite nanometer filtering film mainly connects including interfacial polymerization, surface cladding process, surface
Branch polymerization, LBL self-assembly method and bionical Method for bonding etc..Wherein interfacial polymerization is excellent with its is easy to operate, controllability is strong etc.
Point is widely used in technical field of membrane, and interfacial polymerization can prepare ultra-thin active layer, cause composite membrane low
Pressure has both higher selectivity and permeability.
Preparation of Thin Film Composite Membrane by Interfacial Polymerization Method is in two immiscible solvents using the very high monomer of two kinds of reactivities
Polymerisation occurs for interface, so as to form very thin compacted zone on porous basement membrane.Since solution is mutual in two containing monomer
Incompatible, reaction only occurs in interface, therefore the polymeric layer generated is very thin, so as to cause compound permeability of the membrane and selection
Property all greatly improves.Common activated monomer has polyamine, polyalcohol, polyphenol and polynary acyl chlorides etc..Wherein, polyamine, more
First alcohol and the water-soluble phase of polyphenol, polynary acyl chlorides then dissolve in organic phase, polyamide, polyester, polyureas are respectively formed after reaction
Or the polymeric skins such as polyurethane.Wherein PA membrane is most common in Preparation of Thin Film Composite Membrane by Interfacial Polymerization Method and earliest work
The film of industry production.
Fouling membrane refer to particle, colloid, microorganism, salt in feed liquid etc. due between film physics, chemical action,
In film surface or fenestra adsorption, the deposition and accumulation at film/water termination, membrane aperture is caused to become smaller or block or in film
Surface formation cake layer or gel layer, the phenomenon that causing the resistance to mass tranfer of separation process to increase, continue to decline film permeation flux.
It needs to carry out frequent physical cleaning and chemical cleaning to film when fouling membrane is serious, reduces the effective time of film, and it is clear
Film can be damaged in itself by washing chemical reagent used, shortened the service life of film, added operating cost.Therefore, how to effectively control
Fouling membrane has become the key issue in current NF membrane field.It is to tackle the basic method of fouling membrane to prepare antipollution NF membrane.
The method that tradition prepares antipollution NF membrane at present is mainly surface hydrophilic modification, is acted on by hydrated sheath and prevents dirt
Object is contaminated in the absorption of film surface, and higher flux recovery can be reached by physical cleaning, but in operational process, the flux of film
Attenuation is still very serious.Recently, low-surface-energy self-cleaning surface also shows good prospect in terms of pollution-resistant membrane surface construction,
Pollutant and film surface active force can be greatly reduced, makes it that can be taken off under relatively low hydraulics shearing force from film surface
It removes, therefore the flux decline of film can be greatly reduced.Fluorine material is a kind of typical low-surface-energy material, in marine anti-pollution
Paint field makes substantial progress.Pollution-resistant membrane field is being prepared, mostly using the method for synthesis fluoropolymer blending and modifying, but
Be fluorine material modification polyamide nanofiltration film surface research it is still less.
The content of the invention
It is an object of the invention to provide a kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane, the preparation method processes
Simple to operation, prepared composite nanometer filtering film has higher water flux and separating property under the conditions of compared with low operating pressure,
And show good anti pollution property.
The preparation method of fluorine-containing polyamide composite nanofiltration membrane provided by the invention, it is compound including polyether sulfone basement membrane, polyamide
The preparation of NF membrane and fluorine-containing polyamide composite nanofiltration membrane, wherein, the preparation of polyether sulfone basement membrane is：Polyether sulfone is dissolved in N, N- bis-
Methylformamide is configured to the casting solution that mass concentration containing polyether sulfone is 15-18%, 4h is stirred at 60 DEG C, and at 60 DEG C
Standing and defoaming 4h by casting solution knifing on a glass after being cooled to room temperature, is put into freezing film in 25 DEG C of water-baths, from glass
It is impregnated for 24 hours with deionized water after being removed on plate, obtains polyether sulfone basement membrane；The preparation of polyamide composite nanofiltration membrane is：It is obtained above-mentioned
To polyether sulfone basement membrane be immersed in the piperazine aqueous solution that mass fraction is 0.1%, taken out after 30min and film and blot table with filter paper
The piperazine aqueous solution of face remnants, then be immersed in the n-heptane solution for the pyromellitic trimethylsilyl chloride that mass fraction is 0.1%, after 2min
Taking-up is placed at room temperature for 30min in air, obtains polyamide composite nanofiltration membrane；The preparation of fluorine-containing polyamide composite nanofiltration membrane is：
Polyamide nanofiltration membrane obtained above is immersed in the ethanol solution for the triethylene tetramine that mass fraction is 5.0%, reaction temperature
It spends for 60 DEG C, is taken out after reacting 3h, successively with ethyl alcohol and deionized water rinsing, obtain amination polyamide composite nanofiltration membrane；Will
To amination polyamide nanofiltration membrane be immersed in mass fraction be 0.1~0.5% Hexafluorobutyl mathacrylate ethanol solution
In, reaction temperature is 50 DEG C, is taken out after reacting 12~48h, successively with ethyl alcohol and deionized water rinsing, obtains fluorine-containing polyamide and answer
Close NF membrane.
The advantage of the invention is that：The preparation method is combined surface grafting with Michael's addition, and process is simple to operation,
Compared with traditional polyamide composite nanofiltration membrane, fluorine-containing polyamide composite nanofiltration membrane prepared by this method is in relatively low operating pressure
Under (0.2MPa), there is higher water flux and separating property, and show good anti pollution property.
Description of the drawings
Fig. 1 is the made comparison membrane filtration bovine serum albumin aqueous solution of comparative example, humic aqueous acid, oil-water emulsion
Variations of flux figure during (mass fraction is 0.1%).
Fig. 2 is that the made fluorine-containing polyamide composite nanofiltration membrane 2 of the embodiment of the present invention 2 filters bovine serum albumin aqueous solution, corruption
Grow the variations of flux figure during aqueous acid, oil-water emulsion (mass fraction is 0.1%).
Specific embodiment
Technical solution of the present invention is described in further detail with reference to specific embodiment and subordinate list, it is described specific
Embodiment is only explained the present invention, is not intended to limit the invention.
Embodiment 1, the preparation for preparing fluorine-containing polyamide composite nanofiltration membrane, step are as follows：
Step 1: the preparation of polyether sulfone basement membrane：Polyether sulfone is dissolved in n,N-Dimethylformamide, is configured to matter containing polyether sulfone
The casting solution that concentration is 15-18% is measured, 4h, and the standing and defoaming 4h at 60 DEG C are stirred at 60 DEG C, it will casting after being cooled to room temperature
Film liquid knifing on a glass, is put into freezing film in 25 DEG C of water-baths, is impregnated after being removed from glass plate with deionized water
For 24 hours, polyether sulfone basement membrane is obtained.
Step 2: the preparation of polyamide composite nanofiltration membrane：The polyether sulfone basement membrane that step 1 obtains is immersed in mass fraction
Film is taken out in 0.1% piperazine aqueous solution, after 30min and blots surface residual aqueous solution with filter paper, then is immersed in quality point
In n-heptane solution of the number for 0.1% pyromellitic trimethylsilyl chloride, taken out after 2min and be placed at room temperature for 30min in air, gathered
Amide composite nanometer filtering film.
Step 3: the preparation of fluorine-containing polyamide composite nanofiltration membrane：The polyamide nanofiltration membrane that step 2 is obtained is immersed in matter
In the ethanol solution for measuring the triethylene tetramine that fraction is 5.0%, reaction temperature is 60 DEG C, is taken out after reacting 3h, uses ethyl alcohol successively
And deionized water rinsing, obtain amination polyamide composite nanofiltration membrane；Obtained amination polyamide nanofiltration membrane is immersed in quality point
In ethanol solution of the number for 0.1% Hexafluorobutyl mathacrylate, reaction temperature is 50 DEG C, and reaction is taken out afterwards for 24 hours, is used successively
Ethyl alcohol and deionized water rinsing obtain fluorine-containing polyamide composite nanofiltration membrane, are denoted as fluorine-containing polyamide composite nanofiltration membrane 1.
Water flux of the fluorine-containing polyamide composite nanofiltration membrane 1 under 0.2MPa operating pressures obtained by embodiment 1 be
41.5L/(m2H), to Na2SO4(mass fraction 0.1%) aqueous solution rejection is 78.3%.
Embodiment 2 prepares fluorine-containing polyamide composite nanofiltration membrane, and preparation process is substantially the same manner as Example 1, and difference only exists
In：In step 3, obtained amination polyamide nanofiltration membrane is immersed in the ethanol solution of Hexafluorobutyl mathacrylate, first
The mass fraction of the ethanol solution of base hexafluorobutyl acrylate is changed to 0.3% by 0.1%, is finally made that fluorine-containing polyamide is compound receives
Filter membrane 2.
Water flux of the fluorine-containing polyamide composite nanofiltration membrane 2 under 0.2MPa operating pressures obtained by embodiment 2 be
43.8L/(m2H), to Na2SO4(mass fraction 0.1%) aqueous solution rejection is 78.8%.Fig. 2 is compound for the fluorine-containing polyamide
NF membrane 2 is filtered during bovine serum albumin aqueous solution, humic aqueous acid, oil-water emulsion (mass fraction is 0.1%)
Variations of flux figure.
Embodiment 3 prepares fluorine-containing polyamide composite nanofiltration membrane, and preparation process is substantially the same manner as Example 1, and difference only exists
In：In step 3, obtained amination polyamide nanofiltration membrane is immersed in the ethanol solution of Hexafluorobutyl mathacrylate, first
The mass fraction of the ethanol solution of base hexafluorobutyl acrylate is changed to 0.5% by 0.1%, is finally made that fluorine-containing polyamide is compound receives
Filter membrane 3.
Water flux of the fluorine-containing polyamide composite nanofiltration membrane 3 under 0.2MPa operating pressures obtained by embodiment 3 be
41.7L/(m2H), to Na2SO4(mass fraction 0.1%) aqueous solution rejection is 79.3%.
Embodiment 4 prepares fluorine-containing polyamide composite nanofiltration membrane, and preparation process is substantially the same manner as Example 2, and difference only exists
In：In step 3, obtained amination polyamide nanofiltration membrane is immersed in anti-in the ethanol solution of Hexafluorobutyl mathacrylate
By the mass fraction of the ethanol solution of Hexafluorobutyl mathacrylate is finally made fluorine-containing poly- by being changed to 12h for 24 hours between seasonable
Amide composite nanometer filtering film 4.
Water flux of the fluorine-containing polyamide composite nanofiltration membrane 4 under 0.2MPa operating pressures obtained by embodiment 4 be
41.5L/(m2H), to Na2SO4(mass fraction 0.1%) aqueous solution rejection is 80.3%.
Embodiment 5 prepares fluorine-containing polyamide composite nanofiltration membrane, and preparation process is substantially the same manner as Example 2, and difference only exists
In：In step 3, obtained amination polyamide nanofiltration membrane is immersed in anti-in the ethanol solution of Hexafluorobutyl mathacrylate
By the mass fraction of the ethanol solution of Hexafluorobutyl mathacrylate is finally made fluorine-containing poly- by being changed to 48h for 24 hours between seasonable
Amide composite nanometer filtering film 5.
Water flux of the fluorine-containing polyamide composite nanofiltration membrane 5 under 0.2MPa operating pressures obtained by embodiment 5 be
50.0L/(m2H), to Na2SO4(mass fraction 0.1%) aqueous solution rejection is 76.0%.
Comparative example prepares a kind of polyamide composite nanofiltration membrane, preparation process and the step of embodiment 1 one and step two-phase
Together, polyamide composite nanofiltration membrane is finally made, is denoted as comparative film.
The water flux of comparative film prepared by comparative example under 0.2MPa operating pressures is 38.2L/ (m2H), to Na2SO4(matter
Measure fraction 0.1%) aqueous solution rejection be 79.6%.Fig. 1 is that the made comparison membrane filtration bovine serum albumin of the comparative example is water-soluble
Variations of flux figure during liquid, humic aqueous acid, oil-water emulsion (mass fraction is 0.1%).
Fluorine-containing polyamide composite nanofiltration membrane made from the embodiment of the present invention 1 to 5 with polyamide made from comparative example is compound receives
The flux of filter membrane and separating property are more as shown in table 1：
Table 1
In conclusion a kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane provided by the invention, mainly using phase
Conversion method prepares polyether sulfone ultrafiltration membranes；Film is immersed in the aqueous phase monomers piperazine of low concentration and the equal benzene of organic phase monomer successively again
In three formyl chlorides, polyamide composite nanofiltration membrane is made through interfacial polymerization；Polyamide is answered using surface grafting triethylene tetramine
After closing NF membrane progress surface amination, then by Michael addition reaction modification Hexafluorobutyl mathacrylate, prepare fluorine-containing poly-
Amide composite nanometer filtering film.The advantage of the invention is that：The preparation method is combined surface grafting with Michael's addition, and process is simple
It is easy to operate, it is anti-by changing (Hexafluorobutyl mathacrylate) liquid quality fraction of fluorochemical monomer in preparation process and fluorochemical monomer
Between seasonable, the regulation and control of structure of composite membrane and performance can be realized.Compared with traditional polyamide composite nanofiltration membrane, prepared by this method
Fluorine-containing polyamide composite nanofiltration membrane has higher water flux and separating property under relatively low operating pressure (0.2MPa), and
Show good anti pollution property.
Although above in conjunction with attached drawing, subordinate list, invention has been described, and the invention is not limited in above-mentioned tools
Body embodiment, above-mentioned specific embodiment is only schematical rather than restricted, the ordinary skill people of this field
Member, without deviating from the spirit of the invention, can also make many variations under the enlightenment of the present invention, these belong to this
Within the protection of invention.
Claims (1)
1. a kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane, which is characterized in that comprise the following steps：
Step 1: the preparation of polyether sulfone basement membrane：
Polyether sulfone is dissolved in n,N-Dimethylformamide, the casting solution that mass concentration containing polyether sulfone is 15-18% is configured to, 60
4h, and the standing and defoaming 4h at 60 DEG C are stirred at DEG C, by casting solution knifing on a glass after being cooled to room temperature, is put into 25 DEG C
Freezing film in water-bath is impregnated for 24 hours with deionized water after being removed from glass plate, obtains polyether sulfone basement membrane；
Step 2: the preparation of polyamide composite nanofiltration membrane：
The polyether sulfone basement membrane that step 1 obtains is immersed in the piperazine aqueous solution that mass fraction is 0.1%, film is taken out after 30min
And the piperazine aqueous solution of surface residual is blotted with filter paper, then it is immersed in the positive heptan for the pyromellitic trimethylsilyl chloride that mass fraction is 0.1%
It is taken out in alkane solution, after 2min and is placed at room temperature for 30min in air, obtain polyamide composite nanofiltration membrane；
Step 3: the preparation of fluorine-containing polyamide composite nanofiltration membrane：
The polyamide nanofiltration membrane that step 2 is obtained is immersed in the ethanol solution for the triethylene tetramine that mass fraction is 5.0%,
Reaction temperature is 60 DEG C, is taken out after reacting 3h, successively with ethyl alcohol and deionized water rinsing, obtains amination polyamides amine composite nanofiltration
Film；Obtained amination polyamide nanofiltration membrane is immersed in the second for the Hexafluorobutyl mathacrylate that mass fraction is 0.1~0.5%
In alcoholic solution, reaction temperature is 50 DEG C, is taken out after reacting 12~48h, successively with ethyl alcohol and deionized water rinsing, is obtained fluorine-containing poly-
Amide composite nanometer filtering film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610129859.1A CN105727763B (en) | 2016-03-07 | 2016-03-07 | A kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610129859.1A CN105727763B (en) | 2016-03-07 | 2016-03-07 | A kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105727763A CN105727763A (en) | 2016-07-06 |
| CN105727763B true CN105727763B (en) | 2018-05-22 |
Family
ID=56249234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610129859.1A Active CN105727763B (en) | 2016-03-07 | 2016-03-07 | A kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105727763B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603580A (en) * | 2018-12-29 | 2019-04-12 | 安徽智泓净化科技股份有限公司 | A kind of preparation method of fluorine surface Modified Cellulose Acetate membrane for Reverse Osmosis |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823865B (en) * | 2017-02-23 | 2020-04-10 | 天津大学 | Aromatic polyamide composite reverse osmosis membrane grafted with fluorocarbon material and aminoglycoside antibiotic and preparation method thereof |
| CN109012183B (en) * | 2018-07-09 | 2021-02-09 | 天津大学 | Preparation method of ultra-thin anti-pollution composite nanofiltration membrane assembled by phytic acid |
| WO2020137066A1 (en) * | 2018-12-26 | 2020-07-02 | 東レ株式会社 | Composite semipermeable membrane |
| CN109569328A (en) * | 2018-12-29 | 2019-04-05 | 安徽智泓净化科技股份有限公司 | A kind of fluorine richness polyamide reverse osmose membrane preparation method |
| CN110437416B (en) * | 2019-08-19 | 2021-08-10 | 美瑞新材料股份有限公司 | Preparation method of fluorosilicated polyurethane elastomer with comb-shaped structure |
| CN110523303B (en) * | 2019-09-12 | 2021-11-02 | 南京工业大学 | Fluorinated polyamide nanofiltration membrane and preparation method thereof |
| CN112058094B (en) * | 2020-09-10 | 2021-04-30 | 贵州省材料产业技术研究院 | Loose nanofiltration membrane and preparation method thereof |
| CN112827368B (en) * | 2021-01-07 | 2023-08-11 | 中化(宁波)润沃膜科技有限公司 | Anti-pollution reverse osmosis membrane and preparation method thereof |
| CN114452835B (en) * | 2021-12-30 | 2024-01-09 | 南京工业大学 | Neutral nanofiltration membrane, preparation method and application thereof in small-molecule dye wastewater desalination |
| CN114749030B (en) * | 2022-03-29 | 2023-04-14 | 杭州水处理技术研究开发中心有限公司 | Nanofiltration membrane and preparation method and application thereof |
| CN115364687A (en) * | 2022-08-18 | 2022-11-22 | 天津工业大学 | High-performance nanofiltration membrane and preparation method and application thereof |
| CN115350590B (en) * | 2022-08-18 | 2024-03-01 | 中原工学院 | Crown ether group covalent organic framework/polyamide composite nanofiltration membrane and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101112675A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院大连化学物理研究所 | Method for modifying compound film surface |
| CN102179192A (en) * | 2011-03-16 | 2011-09-14 | 天津大学 | Pollution-resistant membrane for filling fluorine-containing amphiphilic surface-modification material and preparation method thereof |
| CN102908914A (en) * | 2012-10-25 | 2013-02-06 | 贵阳时代沃顿科技有限公司 | Composite separating membrane with alloy ultrafiltration layer and preparation method of composite separating membrane |
| CN104667759A (en) * | 2013-11-29 | 2015-06-03 | 贵阳时代沃顿科技有限公司 | Preparation method of high-throughput anti-pollution composite nanofiltration membrane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201117950D0 (en) * | 2011-10-18 | 2011-11-30 | Imp Innovations Ltd | Membranes for separation |
-
2016
- 2016-03-07 CN CN201610129859.1A patent/CN105727763B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101112675A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院大连化学物理研究所 | Method for modifying compound film surface |
| CN102179192A (en) * | 2011-03-16 | 2011-09-14 | 天津大学 | Pollution-resistant membrane for filling fluorine-containing amphiphilic surface-modification material and preparation method thereof |
| CN102908914A (en) * | 2012-10-25 | 2013-02-06 | 贵阳时代沃顿科技有限公司 | Composite separating membrane with alloy ultrafiltration layer and preparation method of composite separating membrane |
| CN104667759A (en) * | 2013-11-29 | 2015-06-03 | 贵阳时代沃顿科技有限公司 | Preparation method of high-throughput anti-pollution composite nanofiltration membrane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603580A (en) * | 2018-12-29 | 2019-04-12 | 安徽智泓净化科技股份有限公司 | A kind of preparation method of fluorine surface Modified Cellulose Acetate membrane for Reverse Osmosis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105727763A (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105727763B (en) | A kind of preparation method of fluorine-containing polyamide composite nanofiltration membrane | |
| CN110052179B (en) | Preparation method of anti-pollution composite nanofiltration membrane | |
| Singh et al. | Introduction to membrane processes for water treatment | |
| US10518226B2 (en) | Membranes with polydopamine coatings | |
| CA1113318A (en) | Coated membranes | |
| US20160151748A1 (en) | Reverse osmosis or nanofiltration membranes and method for production thereof | |
| KR20160027196A (en) | Multiple channel membranes | |
| CN104474925A (en) | Preparation method of composite high-water-flux polyamide reverse-osmosis membrane | |
| CN105148750B (en) | A kind of method that polyamide composite film surface is modified | |
| WO2019153946A1 (en) | High-performance forward osmosis membrane, preparation method therefor and application thereof | |
| KR101240736B1 (en) | Polymer compositions, water-treatment membranes and water-treatment modules comprising the same | |
| KR100813908B1 (en) | Preparation method of highly permeable composite polyamide nanofiltration membranes | |
| CN106943891B (en) | Pollution-resistant composite membrane, preparation method thereof and oil-water emulsion separation method | |
| Yu et al. | Preparation of highly permeable and selective nanofiltration membranes with antifouling properties by introducing the capsaicin derivative into polyamide thin selective layer by bidirectional interfacial polymerization | |
| FI108449B (en) | Method for Scraping Latex Dispersions | |
| KR101944118B1 (en) | Reverse Osmosis membrane having excellent fouling resistance and manufacturing method thereof | |
| CN109603584B (en) | Preparation method of hydrophilic polyamide reverse osmosis membrane | |
| Vainrot et al. | Membranes in desalination and water treatment | |
| KR101230843B1 (en) | Fouling resistance polyamide reverse osmosis membrane and manufacturing method thereof | |
| CN108211794B (en) | High-selectivity hollow fiber desalting membrane and preparation method thereof | |
| EP1301256A2 (en) | Method for modifying membrane rejection characteristics | |
| CN113926319A (en) | Composite membrane and preparation method and application thereof | |
| KR101283738B1 (en) | Asymmetric ultrafiltration and microfiltration membranes containing chitosan molecules and the method for preparation thereof | |
| KR102042299B1 (en) | Method for manufacturing water-treatment membrane, water-treatment membrane manufactured by thereof, and water treatment module comprising membrane | |
| KR20150079205A (en) | Separation membrane having excellent fouling resistance for positively charged pollutants and method for manufacturing thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 300350 Haijing garden, Haihe Education Park, Jinnan, Tianjin, 135, Tianjin University. Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |
|
| CP02 | Change in the address of a patent holder |