CN106731903A - A kind of polyethersulfone separating membrane and preparation method thereof - Google Patents
A kind of polyethersulfone separating membrane and preparation method thereof Download PDFInfo
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- CN106731903A CN106731903A CN201611098046.7A CN201611098046A CN106731903A CN 106731903 A CN106731903 A CN 106731903A CN 201611098046 A CN201611098046 A CN 201611098046A CN 106731903 A CN106731903 A CN 106731903A
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- parts
- polyether sulfone
- separating membrane
- mek
- isopropanol
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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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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of polyethersulfone separating membrane and preparation method thereof, belong to separation technical field of membrane.Seperation film of the invention includes：15 20 parts of polyether sulfone, N, 70 85 parts of N dimethylacetylamides, 5 10 parts of absolute ethyl alcohol, 35 parts of isopropanol, 35 parts of MEK, 24 parts of tributyl phosphate, 2,000 5 10 parts of polyethylene glycol PEG, 35 parts of anhydrous Lithium chloride.The present invention is main filmogen with polyether sulfone, and with N, N-dimethylacetylamide is solvent, and casting film liquid medium is water.With organic molecule absolute ethyl alcohol, isopropanol, MEK, tributyl phosphate, organic macromolecule polyethylene glycol PEG 2000 and inorganic molecules anhydrous Lithium chloride adjust membrane structure for additive, prepare with preferable pore structure, the polyethersulfone separating membrane of preferably rejection and larger water flux.
Description
Technical field
The present invention relates to a kind of seperation film and preparation method thereof, it is more particularly related to a kind of polyether sulfone is separated
Film and its preparation part, belong to separation technical field of membrane.
Background technology
In recent decades, polymeric membrane is widely used in various gases, liquid separation field, such as micro-filtration, ultrafiltration, counter-infiltration
And nanofiltration, and PS membrane turns into one of most widely used polymeric membrane with its excellent performance.
The main preparation method of PS membrane is phase inversion.During inversion of phases prepares PS membrane, the structure of PS membrane
And performance is influenceed by casting solution composition, and additive is one of principal element.Suitable additive is added in casting solution is
Prepare appropriate configuration and permeance property film is most easy and most efficient method.The species of different additive, content and molecular weight
It is different larger to PS membrane structure influence.
The performance of existing polyethersulfone separating membrane is not good.
The content of the invention
Present invention seek to address that the not good problem of the performance of existing polyethersulfone separating membrane, there is provided a kind of polyethersulfone separating membrane,
The seperation film has preferably performance.
In order to realize foregoing invention purpose, its specific technical scheme is as follows：
A kind of polyethersulfone separating membrane, it is characterised in that：Including following raw materials by weight：
Polyether sulfone 15-20 parts
DMA 70-85 parts
Absolute ethyl alcohol 5-10 parts
Isopropanol 3-5 parts
MEK 3-5 parts
Tributyl phosphate 2-4 parts
5-10 parts of polyethylene glycol PEG-2000
Anhydrous Lithium chloride 3-5 parts.
A kind of preparation method of polyethersulfone separating membrane, it is characterised in that：Comprise the following steps that：
A, polyether sulfone is accurately weighed by recipe requirements in filling in advance load weighted DMA port grinding bottle；In 60
Dissolving 3-4h is shaken in DEG C hot bath, polyether sulfone is fully dissolved；Add absolute ethyl alcohol, isopropanol, MEK, tricresyl phosphate fourth
Ester, polyethylene glycol PEG-2000 and anhydrous Lithium chloride；
B, continue at and shake in 60 DEG C of hot baths dissolving 2-3h；The filtering of above-mentioned lysate, deaeration are obtained into casting solution, it is standby；
C, environment temperature be 25 DEG C, humidity less than under conditions of 70%, scraped on bright and clean glass plate with straight glass bar
Film, regulation glass bar is spaced about 80-100 μm with glass plate；
D, the film scraped are put into the coagulating bath of pure water after standing 5-10s in atmosphere, will after diaphragm departs from from glass plate
Diaphragm soaks in moving into new deionized water；
E, with the film prepared by massive laundering by solvent therein, additive remove, obtain product.
The Advantageous Effects that the present invention brings：
The present invention is main filmogen with polyether sulfone, and with N, N-dimethylacetylamide is solvent, and casting film liquid medium is water.With
Organic molecule absolute ethyl alcohol, isopropanol, MEK, tributyl phosphate, organic macromolecule polyethylene glycol PEG-2000 and inorganic
Small molecule anhydrous Lithium chloride adjusts membrane structure for additive, prepares with preferable pore structure, preferably rejection and larger
The polyethersulfone separating membrane of water flux.
Specific embodiment
Embodiment 1
A kind of polyethersulfone separating membrane, including following raw materials by weight：
15 parts of polyether sulfone
70 parts of DMA
5 parts of absolute ethyl alcohol
3 parts of isopropanol
3 parts of MEK
2 parts of tributyl phosphate
5 parts of polyethylene glycol PEG-2000
3 parts of anhydrous Lithium chloride.
Embodiment 2
A kind of polyethersulfone separating membrane, including following raw materials by weight：
20 parts of polyether sulfone
85 parts of DMA
10 parts of absolute ethyl alcohol
5 parts of isopropanol
5 parts of MEK
4 parts of tributyl phosphate
10 parts of polyethylene glycol PEG-2000
5 parts of anhydrous Lithium chloride.
Embodiment 3
A kind of polyethersulfone separating membrane, including following raw materials by weight：
17 parts of polyether sulfone
78 parts of DMA
7 parts of absolute ethyl alcohol
4 parts of isopropanol
4 parts of MEK
3 parts of tributyl phosphate
7 parts of polyethylene glycol PEG-2000
4 parts of anhydrous Lithium chloride.
Embodiment 4
A kind of preparation method of polyethersulfone separating membrane, comprises the following steps that：
A, polyether sulfone is accurately weighed by recipe requirements in filling in advance load weighted DMA port grinding bottle；In 60
Dissolving 3h is shaken in DEG C hot bath, polyether sulfone is fully dissolved；Add absolute ethyl alcohol, isopropanol, MEK, tributyl phosphate,
Polyethylene glycol PEG-2000 and anhydrous Lithium chloride；
B, continue at and shake in 60 DEG C of hot baths dissolving 2h；The filtering of above-mentioned lysate, deaeration are obtained into casting solution, it is standby；
C, environment temperature be 25 DEG C, humidity less than under conditions of 70%, scraped on bright and clean glass plate with straight glass bar
Film, regulation glass bar is spaced about 80 μm with glass plate；
D, the film scraped are put into the coagulating bath of pure water after standing 5s in atmosphere, by diaphragm after diaphragm departs from from glass plate
Move into immersion in new deionized water；
E, with the film prepared by massive laundering by solvent therein, additive remove, obtain product.
Embodiment 5
A kind of preparation method of polyethersulfone separating membrane, comprises the following steps that：
A, polyether sulfone is accurately weighed by recipe requirements in filling in advance load weighted DMA port grinding bottle；In 60
Dissolving 4h is shaken in DEG C hot bath, polyether sulfone is fully dissolved；Add absolute ethyl alcohol, isopropanol, MEK, tributyl phosphate,
Polyethylene glycol PEG-2000 and anhydrous Lithium chloride；
B, continue at and shake in 60 DEG C of hot baths dissolving 3h；The filtering of above-mentioned lysate, deaeration are obtained into casting solution, it is standby；
C, environment temperature be 25 DEG C, humidity less than under conditions of 70%, scraped on bright and clean glass plate with straight glass bar
Film, regulation glass bar is spaced about 100 μm with glass plate；
D, the film scraped are put into the coagulating bath of pure water after standing 0s in atmosphere, by diaphragm after diaphragm departs from from glass plate
Move into immersion in new deionized water；
E, with the film prepared by massive laundering by solvent therein, additive remove, obtain product.
Embodiment 6
A kind of preparation method of polyethersulfone separating membrane, comprises the following steps that：
A, polyether sulfone is accurately weighed by recipe requirements in filling in advance load weighted DMA port grinding bottle；In 60
Dissolving 3.5h is shaken in DEG C hot bath, polyether sulfone is fully dissolved；Add absolute ethyl alcohol, isopropanol, MEK, tricresyl phosphate fourth
Ester, polyethylene glycol PEG-2000 and anhydrous Lithium chloride；
B, continue at and shake in 60 DEG C of hot baths dissolving 2.5h；The filtering of above-mentioned lysate, deaeration are obtained into casting solution, it is standby；
C, environment temperature be 25 DEG C, humidity less than under conditions of 70%, scraped on bright and clean glass plate with straight glass bar
Film, regulation glass bar is spaced about 90 μm with glass plate；
D, the film scraped are put into the coagulating bath of pure water after standing 7s in atmosphere, by diaphragm after diaphragm departs from from glass plate
Move into immersion in new deionized water；
E, with the film prepared by massive laundering by solvent therein, additive remove, obtain product.
Claims (2)
1. a kind of polyethersulfone separating membrane, it is characterised in that：Including following raw materials by weight：
Polyether sulfone 15-20 parts
DMA 70-85 parts
Absolute ethyl alcohol 5-10 parts
Isopropanol 3-5 parts
MEK 3-5 parts
Tributyl phosphate 2-4 parts
5-10 parts of polyethylene glycol PEG-2000
Anhydrous Lithium chloride 3-5 parts.
2. the preparation method of a kind of polyethersulfone separating membrane according to claim 1, it is characterised in that：Including following technique step
Suddenly：
A, polyether sulfone is accurately weighed by recipe requirements in filling in advance load weighted DMA port grinding bottle；In 60
Dissolving 3-4h is shaken in DEG C hot bath, polyether sulfone is fully dissolved；Add absolute ethyl alcohol, isopropanol, MEK, tricresyl phosphate fourth
Ester, polyethylene glycol PEG-2000 and anhydrous Lithium chloride；
B, continue at and shake in 60 DEG C of hot baths dissolving 2-3h；The filtering of above-mentioned lysate, deaeration are obtained into casting solution, it is standby；
C, environment temperature be 25 DEG C, humidity less than under conditions of 70%, scraped on bright and clean glass plate with straight glass bar
Film, regulation glass bar is spaced about 80-100 μm with glass plate；
D, the film scraped are put into the coagulating bath of pure water after standing 5-10s in atmosphere, will after diaphragm departs from from glass plate
Diaphragm soaks in moving into new deionized water；
E, with the film prepared by massive laundering by solvent therein, additive remove, obtain product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611098046.7A CN106731903A (en) | 2016-12-03 | 2016-12-03 | A kind of polyethersulfone separating membrane and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611098046.7A CN106731903A (en) | 2016-12-03 | 2016-12-03 | A kind of polyethersulfone separating membrane and preparation method thereof |
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| CN106731903A true CN106731903A (en) | 2017-05-31 |
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| CN201611098046.7A Pending CN106731903A (en) | 2016-12-03 | 2016-12-03 | A kind of polyethersulfone separating membrane and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068924A (en) * | 2010-12-22 | 2011-05-25 | 中国科学院长春应用化学研究所 | Polytetrafluoroethylene composite membrane and preparation method thereof |
| CN102085457A (en) * | 2009-12-07 | 2011-06-08 | 广州美能材料科技有限公司 | Method and device for preparing composite multilayer porous hollow fibrous membrane and product |
| WO2013146119A1 (en) * | 2012-03-27 | 2013-10-03 | 株式会社Adeka | Photocurable composition and hard coat agent |
| CN103386298A (en) * | 2013-07-11 | 2013-11-13 | 东华大学 | Preparation method of nano fiber affinity membrane for absorbing and separating La3+ |
-
2016
- 2016-12-03 CN CN201611098046.7A patent/CN106731903A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102085457A (en) * | 2009-12-07 | 2011-06-08 | 广州美能材料科技有限公司 | Method and device for preparing composite multilayer porous hollow fibrous membrane and product |
| CN102068924A (en) * | 2010-12-22 | 2011-05-25 | 中国科学院长春应用化学研究所 | Polytetrafluoroethylene composite membrane and preparation method thereof |
| WO2013146119A1 (en) * | 2012-03-27 | 2013-10-03 | 株式会社Adeka | Photocurable composition and hard coat agent |
| CN103386298A (en) * | 2013-07-11 | 2013-11-13 | 东华大学 | Preparation method of nano fiber affinity membrane for absorbing and separating La3+ |
Non-Patent Citations (1)
| Title |
|---|
| 孙爱玲: "添加剂对聚砜膜气体分离性能和结构的影响", 《天津理工大学学报》 * |
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Application publication date: 20170531 |