CN106902637A - High performance flat formula forward osmosis membrane and preparation method based on hydroxyl carbon nano tube - Google Patents
High performance flat formula forward osmosis membrane and preparation method based on hydroxyl carbon nano tube Download PDFInfo
- Publication number
- CN106902637A CN106902637A CN201710095478.0A CN201710095478A CN106902637A CN 106902637 A CN106902637 A CN 106902637A CN 201710095478 A CN201710095478 A CN 201710095478A CN 106902637 A CN106902637 A CN 106902637A
- Authority
- CN
- China
- Prior art keywords
- osmosis membrane
- forward osmosis
- carbon nano
- nano tube
- high performance
- 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.)
- Pending
Links
Classifications
-
- 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
- B01D61/002—Forward osmosis or direct osmosis
-
- 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
-
- 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
- B01D69/06—Flat membranes
-
- 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
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/14—Esters of organic acids
- B01D71/16—Cellulose acetate
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a kind of high performance flat formula forward osmosis membrane and preparation method based on hydroxyl carbon nano tube, belong to technical field of membrane separation.By 0.05%~2.0%（w/w）Hydroxyl carbon nano tube be dispersed in 58.0%~88.95% by ultrasound（w/w）Mixed solvent in, then with 1.0%~9.0%（w/w）Polyvinylpyrrolidone or polyethylene glycol, 3.0%~11.0%（w/w）Lactic acid, 7.0%~20.0%（w/w）Cellulose acetate add three neck round bottom flask together, in a certain order, to being completely dissolved, 6~24h of standing and defoaming prepares forward osmosis membrane casting solution to 3~16h of stirring and dissolving at a temperature of 15~80 DEG C；5~60mins is heat-treated using phase inversion striking on backing material and in 60~90 DEG C of deionized waters, that is, the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube is obtained.By the use of 1M NaCl as driving liquid, deionized water as material liquid, in the testing time of 1h, its pure water flux reaches 36.0L/m to forward osmosis membrane of the invention2More than h, reverse flux salt is less than 2.5g/m2•h。
Description
Technical field
It is more particularly to a kind of to be based on hydroxyl the present invention relates to flat forward osmosis membrane of a kind of macromolecule and preparation method thereof
The high performance flat formula forward osmosis membrane and preparation method of carbon nano tube.
Background technology
The deficient and increasingly serious water pollution of water resource has turned into the bottleneck of restriction social progress and economic development, new water
Source is developed and effluent sewage recycling also turns into global question of common concern.Because seawater resources extremely enrich on the earth,
And the substantial amounts of effluent sewage of generation, desalinization and sewage recycling have turned into the strategic choice for solving water resources crisis.Many
Sewage recycling technology in, membrane separation technique is one of best selection.It is born as this key issue is solved
Low energy consumption, the positive infiltration technology of Water Sproading rate high are right into desalinization and the research emphasis and focus in sewage recycling field
Solve the problems, such as that shortage of water resources has important strategic importance.
Positive infiltration (forward osmosis, FO) is the membrane separation technique that a kind of dependence film both sides osmotic pressure drives, positive day
Benefit is taken seriously, and related theoretical and application study achieves larger progress, has been successfully applied to desalinization, at waste water
The field such as reason, food medicine, the energy.At present, common forward osmosis membrane mainly has three cellulose acetate membrane, cellulose diacetate
Film, polybenzimidazole membrane, polyamide composite film etc., degree of commercialization is not high to be mainly a lack of forward osmosis membrane of good performance and fits
Suitable driving liquid, and forward osmosis membrane is the key point of whole positive process of osmosis.High performance forward osmosis membrane and its material character
Structure with film is closely related, it is seen that the membrane material and forward osmosis membrane preparation method of function admirable are particularly important.Common just oozes
Permeable membrane preparation method has interfacial polymerization, double selection tunics to prepare three kinds of method and nanofiltration membrane modifying.Interfacial polymerization is prepared just
Concentration polarization is more serious in osmosis composite membrane；Double selection tunics effectively reduce interior concentration polarization, but preparation technology is complex；
NF membrane Modified Membrane is relatively low to the rejection and water flux of monovalent salt；Accordingly, it would be desirable to develop new forward osmosis membrane preparation technology
To improve the separating property of forward osmosis membrane.
Eighties of last century sixties, foreign countries have had begun to the research of positive infiltration technology, using existing reverse osmosis membrane or receive
Filter membrane carries out the application study of positive infiltration, as a result proves that existing reverse osmosis membrane or NF membrane are difficult to use in positive process of osmosis, but
The performance for also demonstrating forward osmosis membrane simultaneously is closely related with membrane material, membrane structure；Then, all multimembrane scientific workers start
Basic research prepared by forward osmosis membrane.Result of study shows, by selecting suitable membrane material, film preparation technique, can prepare
The forward osmosis membrane of function admirable.The research of the positive infiltration technology of China is started late, and the current country aligns the research of infiltration technology, nothing
By being that film preparation or membrane process are studied, still in the exploratory stage.Some film researchers explore cellulose family and just permeate
The preparation condition of film, have studied influence of the various factors to forward osmosis membrane performance, but it is excellent not yet to prepare commercially viable performance
Good forward osmosis membrane；The preparation and application study of forward osmosis membrane still shoulder heavy responsibilities.Respectively early stage studying enlightenments we, profit
Blending technology modified membrane is used, is expected to improve water flux, salt-stopping rate, mechanical performance and the anti-fouling performance of forward osmosis membrane.Hair
Bright patent ZL201410770001.4,201510245514.8 and ZL201410769752.4,201510245504.4 are adopted respectively
Flat and doughnut forward osmosis membrane is prepared with acetyl cellulose blend with nano titanium oxide and Graphene, it is prepared just to ooze
The separating property and permeance property of permeable membrane have obtained raising by a relatively large margin；But by selecting suitable material, still can be to made
The water flux of standby forward osmosis membrane is further improved, and satisfaction is commercially produced and application demand.
CNT is with sp2A kind of preferable One-dimensional Quantum material that covalent bond is constituted, with Young's modulus very high
And tensile strength, while have excellent conduction, thermal conductivity, heat-resisting, corrosion resistance, various premium properties such as slight workability,
It is expected for each Material Field；Applied as multi-walled carbon nano-tubes is based on the biocompatibility and big specific surface area of its height
In the preparation of seperation film.There is scientific research personnel that modified CNT is added to the active layer of film to prepare milipore filter to carry
Their hydrophily high；Also someone is prepared for reverse osmosis membrane by the way that modified CNT is embedded into top layer, leads to its water
Substantially rising, and rejection are measured without decline by a relatively large margin, and improves the resistance tocrocking of film.Therefore, as will be modified
CNT prepares forward osmosis membrane with acetyl cellulose blend, is also expected to while water flux high, salt-stopping rate is obtained, also make just
Permeable membrane product has stain resistance, and this provides new thinking for the research and development and application of forward osmosis membrane material.
How while hydrophilic nmature is obtained, make forward osmosis membrane that there is resistance tocrocking again and keep the stabilization of water flux
Property, this is the problem that film scientific worker is thinking and studying always in recent years.The present invention is hydroxyl using modified carbon nano-tube
Carbon nano tube improves structure and permeance property, the research of separating property of forward osmosis membrane, both at home and abroad there is not yet document report.
The content of the invention
It is an object of the invention to provide a kind of high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube, the present invention
Another purpose be to provide the preparation method of the flat forward osmosis membrane.
To achieve the above object, the technical scheme taken of the present invention is：
A kind of high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube, is by the material composition of following mass percent
's：Polymeric film material 7.0%~20.0%（w/w）, pore-foaming agent --- pore-foaming agent A 1.0%~9.0%（w/w）With pore-foaming agent B
3.0%~11.0%（w/w）, hydroxyl carbon nano tube 0.05%~2.0%（w/w）, solvent 58.0%~88.95%（w/w）；
Described polymeric film material be cellulose diacetate and Triafol T in one kind or two kinds, content be 7.0%~
20.0%（w/w）；
Described hydroxyl carbon nano tube is commercial goods product hydroxyl multi-walled carbon nano-tube, and hydroxyl rate is 1.0~7.0%,
Content is 0.05%~2.0%（w/w）；
Described pore-foaming agent is the mixture of pore-foaming agent A and pore-foaming agent B；Described pore-foaming agent A is polyvinylpyrrolidone and gathers
One kind of ethylene glycol, content is 1.0%~9.0%（w/w）；The pore-foaming agent B is lactic acid, and content is 3.0%~11.0%（w/w）；
The solvent is the mixing of dimethylformamide or dimethylacetylamide or N- methyl pyrrolidones and 1,4- dioxane
Solvent, its volume ratio is dimethylformamide or dimethylacetylamide or N- methyl pyrrolidones:1,4- dioxane=1:
0.1~6.0, content is 58.0%~88.95%（w/w）.
A kind of preparation method of the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube, comprises the following steps：
（1）A certain amount of hydroxyl carbon nano tube is added in mixed solvent, is allowed to fully uniform wherein using ultrasound
Dispersion, is added in three neck round bottom flask after the completion of dispersion, and adds a certain amount of pore-foaming agent, stirs；
（2）A certain amount of polymeric film material is added in three neck round bottom flask, at a temperature of 15~80 DEG C stirring and dissolving 3~
To being completely dissolved, the initial casting solution of the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube is configured within 16 hours；
Then, the casting solution that will be obtained is static at a temperature of stirring and dissolving to be placed 6~24 hours, the bubble of remaining in removing casting solution；
（3）Supporting layer is laid in and is cleaned and on dry glass plate, is then poured on glass plate a certain amount of casting solution, used
Flat Membrane scraper striking film forming；After the nascent state film that will be formed evaporates 2~60 seconds at room temperature, the constant temperature of 5~60 DEG C of immersion
Solidification forming in coagulating bath water tank, film shaping automatically disengage glass plate, after taking the film out in deionized water at normal temperature immersion 12~
48 hours, then it is heat-treated 5~60 minutes in 60~90 DEG C of deionized water, that is, obtains the height based on hydroxyl carbon nano tube
The flat forward osmosis membrane of performance.
Described supporting layer is one kind of polyester screen, non-woven fabrics, cotton yarn filter cloth, filter paper and nylon cloth, and its aperture is 60
~280 mesh；
Evaporation time under described nascent state film normal temperature, refers to that prepared flat forward osmosis membrane is completed after sky in knifing
Residence time in gas, evaporation time is 2~60 seconds；
Described heat treatment temperature and time, refer to the deionization water temperature being heat-treated to prepared flat forward osmosis membrane
Degree and process time, heat treatment temperature are 60~90 DEG C, and heat treatment time is 5~60 minutes；
Described coagulating bath is deionized water.
The invention provides a kind of high performance flat formula forward osmosis membrane and preparation method based on hydroxyl carbon nano tube, will
Hydroxyl carbon nano tube prepares mixed-matrix forward osmosis membrane in being incorporated into polymer, and it is good to assign mixed-matrix forward osmosis membrane
Permeance property, separating property and antifouling property, this is innovation of the invention.Test result shows that prepared just oozes
The pure water flux of permeable membrane and reverse flux salt have very big improvement.
The present invention is compared with prior art, with following beneficial effect：
（1）High performance flat formula forward osmosis membrane and tradition prepared by hydroxyl carbon nano tube blending and modifying provided by the present invention
Cellulose acetate forward osmotic membrane, the mixed-matrix forward osmosis membrane based on CNT compare, its pure water flux and reverse salt are logical
Measure and be obviously improved.
（2）Hydroxyl carbon nano tube blending and modifying provided by the present invention prepares the side of high performance flat formula forward osmosis membrane
Method, equipment used is simple, easily-controllable, film preparation process is simple, assigns prepared forward osmosis membrane good infiltration while film forming
Performance, separating property and antifouling property, easily realize industrialization.
Specific embodiment：
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1：
By 0.5%（W/W）Hydroxyl carbon nano tube be added to 49.5%（W/W）Dimethylformamide and 25.0%（W/W）1,4- bis-
The ring group of oxygen six into mixed solvent in, be allowed to fully dispersed wherein using ultrasound, three mouthfuls are added to after the completion of dispersion
In round-bottomed flask, and add 5.0%（W/W）Polyvinylpyrrolidone and 7.0%（W/W）Lactic acid composition mixing pore-foaming agent,
Stir.By 13.0%（W/W）Cellulose diacetate be added in three neck round bottom flask, the stirring and dissolving 8 at a temperature of 55 DEG C
Hour, to being completely dissolved, is configured to the initial casting solution of the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube；So
Afterwards, the casting solution that will be obtained is static at a temperature of stirring and dissolving to be placed 12 hours, the bubble of remaining in removing casting solution.By 180
Purpose polyester screen is laid in be cleaned and on dry glass plate, then pours on glass plate a certain amount of casting solution, with flat
Plate film scraper striking film forming；After the nascent state film that will be formed evaporates 20 seconds at room temperature, the constant temperature solidification bath water of 30 DEG C of immersion
Solidification forming in groove, film shaping automatically disengages glass plate, is soaked 24 hours in deionized water at normal temperature after taking the film out, Ran Hou
It is heat-treated 15 minutes in 75 DEG C of deionized water, that is, obtains the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube.
By the use of 1MNaCl as liquid is driven, deionized water is used as material liquid, in the testing time of 1h, the pure water of prepared forward osmosis membrane
Flux reaches 36.0L/m2More than h, reverse flux salt is less than 2.5g/m2•h。
Embodiment 2：
The content of hydroxyl carbon nano tube, dimethylformamide is adjusted to 0.05% respectively（W/W）With 49.95%（W/W）, remaining
Same embodiment 1.Then the performance of the obtained high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube is：Utilize
, used as liquid is driven, deionized water is used as material liquid, in the testing time of 1h, the pure water flux of prepared forward osmosis membrane for 1MNaCl
Reach 26.0L/m2More than h, reverse flux salt is less than 4.0g/m2•h。
Embodiment 3：
The content of hydroxyl carbon nano tube, dimethylformamide is adjusted to 2.0% respectively（W/W）With 48.0%（W/W）, remaining
With embodiment 1.Then the performance of the obtained high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube is：Utilize
, used as liquid is driven, deionized water is used as material liquid, in the testing time of 1h, the pure water flux of prepared forward osmosis membrane for 1MNaCl
Reach 33.5L/m2More than h, reverse flux salt is less than 3.0g/m2•h。
Embodiment 4：
Mixing pore-foaming agent is constituted by 5.0%（W/W）Polyvinylpyrrolidone and 7.0%（W/W）Lactic acid be adjusted to 1.0%（W/
W）Polyvinylpyrrolidone and 11.0%（W/W）Lactic acid, remaining is with embodiment 1.It is then obtained to be received based on hydroxylating carbon
The performance of the high performance flat formula forward osmosis membrane of mitron is：By the use of 1MNaCl as driving liquid, deionized water as material liquid,
In the testing time of 1h, the pure water flux of prepared forward osmosis membrane reaches 28.0L/m2More than h, reverse flux salt is less than 3.5g/
m2•h。
Embodiment 5：
Mixing pore-foaming agent is constituted by 5.0%（W/W）Polyvinylpyrrolidone and 7.0%（W/W）Lactic acid be adjusted to 9.0%（W/
W）Polyvinylpyrrolidone and 3.0%（W/W）Lactic acid, remaining is with embodiment 1.It is then obtained to be received based on hydroxylating carbon
The performance of the high performance flat formula forward osmosis membrane of mitron is：By the use of 1MNaCl as driving liquid, deionized water as material liquid,
In the testing time of 1h, the pure water flux of prepared forward osmosis membrane reaches 30.5L/m2More than h, reverse flux salt is less than 4.0g/
m2•h。
Embodiment 6：
The polyvinylpyrrolidone mixed in pore-foaming agent is replaced by PEG-4000, remaining is with embodiment 1.It is then made
The performance of the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube be：By the use of 1MNaCl as liquid is driven, go
Used as material liquid, in the testing time of 1h, the pure water flux of prepared forward osmosis membrane reaches 40.5L/m to ionized water2More than h,
Reverse flux salt is less than 4.0g/m2•h。
Embodiment 7：
Coagulation bath temperature is adjusted to 60 DEG C by 30 DEG C, remaining is with embodiment 1.It is then obtained based on hydroxyl carbon nano tube
The performance of high performance flat formula forward osmosis membrane be：By the use of 1MNaCl as drive liquid, deionized water as material liquid, 1h's
In testing time, the pure water flux of prepared forward osmosis membrane reaches 39.5L/m2More than h, reverse flux salt is less than 3.5g/m2•h。
Embodiment 8：
Heat treatment temperature is adjusted to 90 DEG C by 75 DEG C, remaining is with embodiment 1.It is then obtained based on hydroxyl carbon nano tube
The performance of high performance flat formula forward osmosis membrane be：By the use of 1MNaCl as drive liquid, deionized water as material liquid, 1h's
In testing time, the pure water flux of prepared forward osmosis membrane reaches 32.0L/m2More than h, reverse flux salt is less than 3.0g/m2•h。
Embodiment 9：
Heat treatment time was adjusted to 60 minutes by 15 minutes, remaining is with embodiment 1.It is then obtained to be received based on hydroxylating carbon
The performance of the high performance flat formula forward osmosis membrane of mitron is：By the use of 1MNaCl as driving liquid, deionized water as material liquid,
In the testing time of 1h, the pure water flux of prepared forward osmosis membrane reaches 33.5L/m2More than h, reverse flux salt is less than 2.5g/
m2•h。
Comparative example 1：
By 50.0%（W/W）Dimethylformamide and 25.0%（W/W）The mixed solvent of 1,4- dioxane composition is added to three mouthfuls
In round-bottomed flask, it is subsequently adding by 5.0%（W/W）Polyvinylpyrrolidone and 7.0%（W/W）The mixing pore-foaming agent of lactic acid composition,
Stir.By 13.0%（W/W）Cellulose diacetate be added in three neck round bottom flask, the stirring and dissolving 8 at a temperature of 55 DEG C
Hour, to being completely dissolved, is configured to the initial casting solution of flat Cellulose acetate forward osmotic membrane；Then, the casting solution that will be obtained
It is static at a temperature of stirring and dissolving to place 12 hours, the bubble of remaining in removing casting solution.The polyester screen of 180 mesh is laid in
Clean and on dry glass plate, then pour on glass plate a certain amount of casting solution, with Flat Membrane scraper striking film forming；Will
After the nascent state film for being formed evaporates 20 seconds at room temperature, solidification forming in the constant temperature coagulating bath water tank of 30 DEG C of immersion, film shaping
Glass plate is automatically disengaged, is soaked in deionized water at normal temperature after taking the film out 24 hours, it is then hot in 75 DEG C of deionized water
Treatment 15 minutes, that is, obtain flat Cellulose acetate forward osmotic membrane.By the use of 1MNaCl as liquid is driven, deionized water is used as original
Feed liquid, in the testing time of 1h, the pure water flux of prepared forward osmosis membrane reaches 21.0L/m2More than h, reverse flux salt is small
In 5.5g/m2•h。
Comparative example 2：
By 0.5%（W/W）CNT be added to 49.5%（W/W）Dimethylformamide and 25.0%（W/W）1,4- dioxane
In the mixed solvent of composition, it is allowed to fully dispersed wherein using ultrasound, three mouthfuls of round bottoms is added to after the completion of dispersion and is burnt
In bottle, and add 5.0%（W/W）Polyvinylpyrrolidone and 7.0%（W/W）Lactic acid composition mixing pore-foaming agent, stirring is equal
It is even.By 13.0%（W/W）Cellulose diacetate be added in three neck round bottom flask, stirring and dissolving 8 hours is extremely at a temperature of 55 DEG C
It is completely dissolved, is configured to the initial casting solution of the high performance flat formula forward osmosis membrane based on CNT；Then, the casting that will be obtained
Film liquid is static at a temperature of stirring and dissolving to place 12 hours, the bubble of remaining in removing casting solution.The polyester screen of 180 mesh is put down
Be layered on and clean and on dry glass plate, then pour on glass plate a certain amount of casting solution, with the striking of Flat Membrane scraper into
Film；After the nascent state film that will be formed evaporates 20 seconds at room temperature, solidification forming, film in the constant temperature coagulating bath water tank of 30 DEG C of immersion
Shaping automatically disengages glass plate, is soaked 24 hours in deionized water at normal temperature after taking the film out, then in 75 DEG C of deionized water
Middle heat treatment 15 minutes, that is, obtain the high performance flat formula forward osmosis membrane based on CNT.By the use of 1MNaCl as driving liquid,
Used as material liquid, in the testing time of 1h, the pure water flux of prepared forward osmosis membrane reaches 26.5L/m to deionized water2H with
On, reverse flux salt is less than 5.0g/m2•h。
Claims (10)
1. a kind of high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube, it is characterised in that contain in its casting solution
Hydroxyl carbon nano tube, and influence the structure and performance of forward osmosis membrane；Casting solution by following mass percent material composition：It is poly-
Compound membrane material 7.0%~20.0%（w/w）, pore-foaming agent --- pore-foaming agent A 1.0%~9.0%（w/w）With pore-foaming agent B 3.0%~
11.0%（w/w）, hydroxyl carbon nano tube 0.05%~2.0%（w/w）, solvent 58.0%~88.95%（w/w）.
2. the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube according to claim 1, its feature exists
In：Described forward osmosis membrane is to do-wet method preparation using traditional phase inversion.
3. the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube according to claim 1, its feature exists
In：Described hydroxyl carbon nano tube be hydroxyl multi-walled carbon nano-tube, hydroxyl rate be 1.0~7.0%, content be 0.05%~
2.0%（w/w）.
4. the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube according to claim 1, it is characterised in that：
Described cellulose acetate is one kind or two kinds in cellulose diacetate and Triafol T.
5. the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube according to claim 1, it is characterised in that：
Described pore-foaming agent is the mixture of pore-foaming agent A and pore-foaming agent B；Described pore-foaming agent A is polyvinylpyrrolidone and poly- second two
One kind of alcohol, content is 1.0%~9.0%（w/w）；The pore-foaming agent B is lactic acid, and content is 3.0%~11.0%（w/w）.
6. the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube according to claim 1, it is characterised in that：
The solvent is that dimethylformamide or dimethylacetylamide or N- methyl pyrrolidones are molten with the mixing of 1,4- dioxane
Agent, its volume ratio is dimethylformamide or dimethylacetylamide or N- methyl pyrrolidones：1,4- dioxane=1:0.1~
6.0, content is 58.0%~88.95%（w/w）.
7. a kind of preparation method of the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube, it is characterised in that it is wrapped
Include：
（1）A certain amount of hydroxyl carbon nano tube is added in mixed solvent, is allowed to fully uniform wherein using ultrasound
Dispersion, is added in three neck round bottom flask after the completion of dispersion, and adds a certain amount of pore-foaming agent, stirs；
（2）A certain amount of polymeric film material is added in three neck round bottom flask, at a temperature of 15~80 DEG C stirring and dissolving 3~
To being completely dissolved, the initial casting solution of the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube is configured within 16 hours；
Then, the casting solution that will be obtained is static at a temperature of stirring and dissolving to be placed 6~24 hours, the bubble of remaining in removing casting solution；
（3）Supporting layer is laid in and is cleaned and on dry glass plate, is then poured on glass plate a certain amount of casting solution, used
Flat Membrane scraper striking film forming；After the nascent state film that will be formed evaporates 2~60 seconds at room temperature, the constant temperature of 5~60 DEG C of immersion
Solidification forming in coagulating bath water tank, film shaping automatically disengage glass plate, after taking the film out in deionized water at normal temperature immersion 12~
48 hours, then it is heat-treated 5~60 minutes in 60~90 DEG C of deionized water, that is, obtains the height based on hydroxyl carbon nano tube
The flat forward osmosis membrane of performance.
8. the preparation method of the high performance flat formula forward osmosis membrane based on hydroxyl carbon nano tube according to claim 7,
It is characterized in that：Described supporting layer is one kind of polyester screen, non-woven fabrics, cotton yarn filter cloth, filter paper and nylon cloth, and its aperture is
60~280 mesh；Described coagulating bath is deionized water.
9. the preparation method of the high performance flat formula forward osmosis membrane based on aminated carbon nano tube according to claim 7,
It is characterized in that：Evaporation time under described nascent state film normal temperature is 2~60 seconds.
10. the preparation method of the high performance flat formula forward osmosis membrane based on aminated carbon nano tube according to claim 7,
It is characterized in that：Described heat treatment temperature is 60~90 DEG C, and described heat treatment time is 5~60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710095478.0A CN106902637A (en) | 2017-02-22 | 2017-02-22 | High performance flat formula forward osmosis membrane and preparation method based on hydroxyl carbon nano tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710095478.0A CN106902637A (en) | 2017-02-22 | 2017-02-22 | High performance flat formula forward osmosis membrane and preparation method based on hydroxyl carbon nano tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106902637A true CN106902637A (en) | 2017-06-30 |
Family
ID=59208015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710095478.0A Pending CN106902637A (en) | 2017-02-22 | 2017-02-22 | High performance flat formula forward osmosis membrane and preparation method based on hydroxyl carbon nano tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106902637A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012197A (en) * | 2018-07-20 | 2018-12-18 | 常州大学 | A kind of polyimide composite film and preparation method for infiltration evaporation processing Halite water |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580549A (en) * | 2012-01-12 | 2012-07-18 | 福建师范大学 | Method for preparing carbon nano tube modified bipolar membrane with anion groups |
| US20130098833A1 (en) * | 2010-04-22 | 2013-04-25 | Nanyang Technological University | Method of preparing a nanocomposite membrane and nanocomposite membranes prepared thereof |
| KR101386398B1 (en) * | 2012-11-16 | 2014-04-29 | 광주과학기술원 | Nanocomposite membranes for forward osmosis and method for preparing the same |
| CN103962015A (en) * | 2014-05-19 | 2014-08-06 | 佛山中润水处理科技有限公司 | Preparation method of composite forward osmosis membrane |
| CN104147943A (en) * | 2014-08-15 | 2014-11-19 | 武汉大学 | Preparation method and application of high-molecular forward osmosis membrane |
| CN104474919A (en) * | 2014-12-15 | 2015-04-01 | 济南大学 | High-performance flat-type cellulose acetate/graphene blend forward osmosis membrane |
| CN104474920A (en) * | 2014-12-15 | 2015-04-01 | 济南大学 | High-performance flat plate type cellulose acetate/nano-titanium dioxide blended forward osmosis membrane |
| CN104906967A (en) * | 2015-05-15 | 2015-09-16 | 济南大学 | Cellulose acetate/nano titanium dioxide mixed media hollow fiber positive osmotic membrane |
| CN104906966A (en) * | 2015-05-15 | 2015-09-16 | 济南大学 | Cellulose acetate/functionalized graphene mixed media hollow fiber positive osmotic membrane |
| CN105749765A (en) * | 2016-05-19 | 2016-07-13 | 上海应用技术学院 | Preparation method of high-performance cellulose triacetate forward osmosis membrane |
| CN105771680A (en) * | 2016-04-20 | 2016-07-20 | 嘉兴中科检测技术服务有限公司 | Composite forward osmosis membrane and preparation method thereof |
| CN106031847A (en) * | 2015-03-12 | 2016-10-19 | 中国科学院宁波材料技术与工程研究所 | A preparing method of a forward osmosis membrane doped with an inorganic/organic nanometer particles |
-
2017
- 2017-02-22 CN CN201710095478.0A patent/CN106902637A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130098833A1 (en) * | 2010-04-22 | 2013-04-25 | Nanyang Technological University | Method of preparing a nanocomposite membrane and nanocomposite membranes prepared thereof |
| CN102580549A (en) * | 2012-01-12 | 2012-07-18 | 福建师范大学 | Method for preparing carbon nano tube modified bipolar membrane with anion groups |
| KR101386398B1 (en) * | 2012-11-16 | 2014-04-29 | 광주과학기술원 | Nanocomposite membranes for forward osmosis and method for preparing the same |
| CN103962015A (en) * | 2014-05-19 | 2014-08-06 | 佛山中润水处理科技有限公司 | Preparation method of composite forward osmosis membrane |
| CN104147943A (en) * | 2014-08-15 | 2014-11-19 | 武汉大学 | Preparation method and application of high-molecular forward osmosis membrane |
| CN104474919A (en) * | 2014-12-15 | 2015-04-01 | 济南大学 | High-performance flat-type cellulose acetate/graphene blend forward osmosis membrane |
| CN104474920A (en) * | 2014-12-15 | 2015-04-01 | 济南大学 | High-performance flat plate type cellulose acetate/nano-titanium dioxide blended forward osmosis membrane |
| CN106031847A (en) * | 2015-03-12 | 2016-10-19 | 中国科学院宁波材料技术与工程研究所 | A preparing method of a forward osmosis membrane doped with an inorganic/organic nanometer particles |
| CN104906967A (en) * | 2015-05-15 | 2015-09-16 | 济南大学 | Cellulose acetate/nano titanium dioxide mixed media hollow fiber positive osmotic membrane |
| CN104906966A (en) * | 2015-05-15 | 2015-09-16 | 济南大学 | Cellulose acetate/functionalized graphene mixed media hollow fiber positive osmotic membrane |
| CN105771680A (en) * | 2016-04-20 | 2016-07-20 | 嘉兴中科检测技术服务有限公司 | Composite forward osmosis membrane and preparation method thereof |
| CN105749765A (en) * | 2016-05-19 | 2016-07-13 | 上海应用技术学院 | Preparation method of high-performance cellulose triacetate forward osmosis membrane |
Non-Patent Citations (2)
| Title |
|---|
| 杨颖等: "《碳纳米管的结构、性能、合成及其应用》", 31 August 2013, 黑龙江大学出版社 * |
| 穆劲等: "《高等无机化学》", 31 July 2007, 华东理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012197A (en) * | 2018-07-20 | 2018-12-18 | 常州大学 | A kind of polyimide composite film and preparation method for infiltration evaporation processing Halite water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104474919B (en) | A kind of high performance flat formula cellulose acetate/Graphene is blended forward osmosis membrane | |
| Yong et al. | Properties of polyvinyl chloride (PVC) ultrafiltration membrane improved by lignin: Hydrophilicity and antifouling | |
| Zhao et al. | Dopamine-induced biomimetic mineralization for in situ developing antifouling hybrid membrane | |
| CN107837690A (en) | Flat mixed-matrix forward osmosis membrane and preparation method based on metal organic framework ZIF 8 | |
| Malik et al. | Design and synthesis of polymeric membranes using water-soluble pore formers: An overview | |
| CN104474920B (en) | A kind of flat cellulose acetate/nanometer titanium dioxide blending forward osmosis membrane | |
| CN104028110B (en) | A kind of thin layer composite forward osmosis membrane and preparation method thereof | |
| CN108014655B (en) | Based on the flat mixed-matrix forward osmosis membrane of MIL-101 (Cr)/GO and preparation method | |
| CN104906966A (en) | Cellulose acetate/functionalized graphene mixed media hollow fiber positive osmotic membrane | |
| CN102114391A (en) | Method for preparing polyisophthaloyl metaphenylene diamide nanofiltration membrane | |
| CN106925138A (en) | High performance flat formula forward osmosis membrane and preparation method based on carboxylic carbon nano-tube | |
| Guan et al. | Improved PVDF membrane performance by doping extracellular polymeric substances of activated sludge | |
| Li et al. | Calcium-alginate/HKUST-1 interlayer-assisted interfacial polymerization reaction enhances performance of solvent-resistant nanofiltration membranes | |
| CN105597552A (en) | Forward osmosis membrane with high water flux and high salt rejection rate and method for preparing forward osmosis membrane with one-step method | |
| Ray et al. | Uniform hydrophobic electrospun nanofibrous layer composed of polysulfone and sodium dodecyl sulfate for improved desalination performance | |
| Fareed et al. | Brine desalination via pervaporation using kaolin-intercalated hydrolyzed polyacrylonitrile membranes | |
| CN105921034A (en) | Preparation and application of graphene oxide-modified cellulose acetate forward osmosis membrane | |
| Wang et al. | Enhanced antifouling property of poly (aryl ether nitrile) ultrafiltration membranes via copolymerization with phenolphthalin | |
| CN105582816A (en) | Preparation method of forward osmosis membrane modified with oxidized graphene | |
| CN114904404A (en) | Mixed matrix forward osmosis membrane based on MOF-808(Zr) and preparation method thereof | |
| CN104107641B (en) | Forward osmosis organic-inorganic composite membrane and preparation method thereof | |
| CN106902637A (en) | High performance flat formula forward osmosis membrane and preparation method based on hydroxyl carbon nano tube | |
| CN104492283B (en) | A kind of nano micro crystal cellulose enhanced polyethylene alcohol forward osmosis membrane and preparation and application | |
| Sun et al. | A novel antifouling polyamide thin-film composite forward osmosis membrane fabricated by poly (m-phenylene isophthalamide) for seawater desalination | |
| CN108031304A (en) | Flat mixed-matrix forward osmosis membrane and preparation method based on metal organic framework MIL-101 (Cr) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170630 |