CN106633133A - SPEEK (Sulfonated Polyether Ether Ketone)-SPES (Sulfonated Polyether Sulfone) gas-adjusting composite film, preparation and application - Google Patents
SPEEK (Sulfonated Polyether Ether Ketone)-SPES (Sulfonated Polyether Sulfone) gas-adjusting composite film, preparation and application Download PDFInfo
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- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
- B65D81/261—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for draining or collecting liquids without absorbing them
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/20—Polysulfones
- C08G75/23—Polyethersulfones
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- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/28—Chemically modified polycondensates
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- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/06—Polysulfones; Polyethersulfones
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- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
- C08J2381/06—Polysulfones; Polyethersulfones
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- C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2461/04—Condensation polymers of aldehydes or ketones with phenols only
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2481/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
- C08J2481/06—Polysulfones; Polyethersulfones
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Abstract
The invention belongs to the technical field of film materials, and discloses an SPEEK (Sulfonated Polyether Ether Ketone)-SPES (Sulfonated Polyether Sulfone) gas-adjusting composite film, preparation and application. A preparation method comprises the following steps: enabling PEEK (Polyether Ether Ketone) and PES (Polyether Sulfone) to respectively react with concentrated H2SO4, thus obtaining SPEEK and SPES; then dissolving the SPEEK and the SPES in DMF (Dimethyl Formamide), thus obtaining a film casting solution; then carrying out film casting on the film casting solution on a flat plate, drying, and releasing a film, thus obtaining the SPEEK-SPES gas-adjusting composite film. The preparation method disclosed by the invention is simple, and the film forming condition is easy to control; the obtained SPEEK-SPES gas-adjusting composite film has an obvious inhibiting effect on respiration of fruits and vegetables and can be applied for gas-adjusting fresh preservation of the fruits and vegetables.
Description
Technical field
The invention belongs to technology field of membrane materials, and in particular to a kind of SPEEK-SPES gas regulations composite membrane and prepare with
Using.
Background technology
After fruit and vegetable picking, organism is still in the physics and physiological change that complexity occurs.Storage period, anaerobic respiration is produced
Ethanol, accelerates rotting for fruit and vegerable；Aerobic respiration then consumes oxygen, gives off carbon dioxide, and produces ethylene, reduces moisture.In order to most
Limits ground keeps fruit and vegerable freshness, extends maturing process, needs to create the environment such as low temperature, hypoxia, high carbon dioxide, aseptic.
At present, both at home and abroad for the fresh-keeping treating method of fruit and vegerable generally comprise chemical preservative process, deepfreeze, cold sterilization fresh-keeping,
It is residual that the technologies such as the process of controlled atmosphere and biological preservation etc., wherein chemical preservative, deepfreeze, cold sterilization are respectively present antistaling agent
Stay, the problems such as cryolesion, equipment investment are big, and controlled atmosphere technology is because its is of good preservation effect, safe, operation
The advantages of facilitating, it has also become one of 21 century food industry research and development, the new and high technology promoted.
In recent years, with China's urbanization and the raising with living standards of the people, people carry to quality of vegetable and safety
Higher requirement is gone out, problem especially safe to food is increasingly paid attention to, people tend to select without chemical reagent process
Fresh fruit of vegetables, and lack the air-permeable packaging material matched with fruit and vegerable Repiration in the market, therefore, new controlled atmosphere
The preparation and its application of packaging material become the study hotspot of controlled atmosphere technology.
Polyether-ether-ketone (PEEK) is a kind of engineering plastics of excellent performance, it have thermostability strong, excellent in cushion effect and
The advantages of fatigue performance is excellent.It has been investigated that PEEK also has good controlled atmosphere, for different types of gas has
The unsymmetry of color is selected, and this allows it as the material for making air-conditioning preservative film.But PEEK's is stable in properties, is insoluble in
Most solvents, and its fusing point is very high, it is difficult to film forming is processed, therefore, PEEK is used in field of food as preservative film material
By larger restriction.
Polyether sulfone (PES) is that one kind gathers derivant of soughing, fat-free hydrocarbon functional groupss.Due to its good filming performance, high machine
Tool strength chemical stability, is widely used in terms of masking.But PES itself hydrophobicitys are very strong, need modified to improve parent to it
Aqueouss.
The content of the invention
In order to solve the shortcoming and defect part of above prior art, the primary and foremost purpose of the present invention is to provide a kind of
The preparation method of SPEEK-SPES gas regulation composite membranes.
Another object of the present invention is to provide a kind of SPEEK-SPES gas regulations prepared by said method
Composite membrane.
It is still another object of the present invention to provide above-mentioned SPEEK-SPES gas regulations composite membrane is in fruit and vegetable air-conditioning preservation
Application.
The object of the invention is achieved through the following technical solutions：
A kind of preparation method of SPEEK-SPES gas regulations composite membrane, including following preparation process：
(1) in polyether-ether-ketone (PEEK) being added to into container, it is subsequently adding dense H2SO4, heated and stirred to PEEK is completely molten
Solution, obtains brown yellow solution, and gained brown yellow solution is added drop-wise in mixture of ice and water, forms white solid state thing, solids Jing
Wash, be dried, obtain sulfonated polyether-ether-ketone (SPEEK)；
(2) in polyether sulfone (PES) being added to into container, it is subsequently adding dense H2SO4, heated and stirred to PES is completely dissolved, obtains
To milky homogeneous phase solution, gained homogeneous phase solution is added drop-wise in mixture of ice and water, forms white solid state thing, solids Jing are washed
Wash, be dried, obtain sulfonated polyether sulfone (SPES)；
(3) sulfonated polyether-ether-ketone (SPEEK) and sulfonated polyether sulfone (SPES) are dissolved in into together N,N-dimethylformamide
(DMF) in, casting solution is obtained, film is taken off in then casting film-forming, the drying on flat board by casting solution, obtains the SPEEK-SPES
Gas regulation composite membrane.
Preferably, during the washing described in step (1) and step (2) refers to and is washed with deionized and is to cleaning mixture pH
Property；Described drying is referred to and is dried 12h at 80 DEG C.
Preferably, the mass ratio that SPEEK described in step (3) and SPES is added is 3:1～1:3.
Preferably, the casting solution described in step (3) is removing insoluble matter using front first Jing centrifugations；In the casting solution
SPEEK and SPES total mass concentration is 5%～18%
Preferably, described flat board refers to glass plate, the glass plate first being cleaned with purificant using front, by
Diluted acid is rinsed, then with soaked in absolute ethyl alcohol, finally clean with ultrapure water, dry for standby.
Preferably, the drying described in step (3) refers to and 4～6h is first dried at 60～80 DEG C, then at 105～121 DEG C
2～4h of lower drying.
Preferably, described in step (3) take off film refer to immersion deionized water in carry out taking off film.
A kind of SPEEK-SPES gas regulations composite membrane, is prepared by said method.
Application of the above-mentioned SPEEK-SPES gas regulations composite membrane in fruit and vegetable air-conditioning preservation.
The present invention principle be：By being grafted sulfo group in PEEK molecules, sulfonated polyether-ether-ketone (SPEEK) is prepared,
SPEEK not only has the good characteristic similar to PEEK, and SPEEK is soluble in the common organic solvents such as DMF, DMAc
In；Modified SPES (sulfonated polyether sulfone) had both remained the excellent performances of PES itself, while and improve the hydrophilic of PES.
By the blending of SPEEK and SPES, being capable of comprehensive both advantages.Then using N,N-dimethylformamide (DMF) as molten
Agent prepares casting solution, volatilizees to form the inhomogenous aperture of size by solvent in film-forming process, make composite membrane have it is good not
Symmetrical gas regulating function, can be applied to the fresh-keeping of fruit and vegerable as controlled atmosphere film.
The preparation method and resulting product of the present invention has the advantage that and beneficial effect：
(1) breathing of the present invention gained SPEEK-SPES gas regulations composite membrane to fruit and vegerable has obvious inhibitory action, with
SPEEK-SPES gas regulations composite membrane preserves fruit and vegerable, the CO of its final state2Concentration level be dropped by nearly half；
(2) present invention forms size uneven using DMF (DMF) as solvent by solution evaporation method
One aperture, makes composite membrane have good asymmetric gas regulatory function, and its preparation method is simple, and membrance casting condition is easy to control
System, with good industrial applications prospect.
Description of the drawings
Fig. 1～3 are respectively the overall shape appearance figure of the gained SPEEK-SPES gas regulation composite membranes of the embodiment of the present invention 1～3；
Fig. 4 and Fig. 5 are respectively the surface electron-microscope scanning of the gained SPEEK-SPES gas regulation composite membranes of the embodiment of the present invention 1
Figure and section electron-microscope scanning figure；
Fig. 6 is that respiratory intensity of the fresh Brassica rapa L under SPEEK-SPES gas regulations composite membrane parcel obtained by the present invention is surveyed
Determine result figure.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited
In this.
Embodiment 1
(1) 5g polyether-ether-ketones (PEEK) brown cylindrical particles are accurately weighed, in being put into 100ml flasks, 50mL is poured slowly into
98% dense H2SO4, it is placed in the heating of thermostat water bath mechanical agitation.4h to PEEK is stirred under the conditions of 80 DEG C, 500r/min completely molten
Solution, obtains brown yellow solution.Above-mentioned brown yellow solution is slowly dropped in a large amount of mixture of ice and water, white solid state thing is formed,
Again deionized water is repeatedly washed, until cleaning mixture pH close 7.The polymer of washing is dried into 12h at 80 DEG C of baking oven, is obtained
Product sulfonated polyether-ether-ketone (SPEEK).
(2) 5g polyether sulfones (PES) white plates are accurately weighed, in being put into 100ml flasks, 50mL 98% is poured slowly into
Dense H2SO4, it is placed in the heating of thermostat water bath mechanical agitation.4h to PES is stirred under the conditions of 80 DEG C, 500r/min to be completely dissolved, and is obtained
To milky homogeneous phase solution.Above-mentioned milky white solution is slowly dropped in a large amount of mixture of ice and water, white solid state thing is formed, then
Deionized water is repeatedly washed, until cleaning mixture pH close 7.The polymer of washing is dried into 12h at 80 DEG C of baking oven, is produced
Thing sulfonated polyether sulfone (SPES).
(3) 2g sulfonated polyether-ether-ketones (SPEEK) and 2g sulfonated polyether sulfones (SPES) solid are accurately weighed, is put into ready
In 100ml beakers, 30mL DMFs (DMF) are poured slowly into, are placed in constant temperature blender with magnetic force stirring, be maintained at
60 DEG C, stir under the conditions of 500r/min, obtain dissolving thick liquid.The thick liquid of upper step is sub-packed in centrifuge tube, in 5000r/
The step of 5min, repeated centrifugation are centrifuged under min rotating speeds 2～3 times, takes supernatant and is casting solution.Flat glass first uses detergent
Cleaning, the rinsing of rear diluted acid, then with soaked in absolute ethyl alcohol a few hours after, finally rinsed well with pure water.By appropriate casting solution
It is poured on glass pane surface and is cast into film liquid in uniform thickness, be steadily put into decompression drying in baking oven, be dried after 4h at 60 DEG C, then puts
2h is dried at 105 DEG C, is immersed in deionized water after natural cooling, take off film, dried at room temperature, preserved, obtain described
SPEEK-SPES gas regulation composite membranes.
The overall shape appearance figure of the present embodiment gained SPEEK-SPES gas regulation composite membranes is as shown in Figure 1.
Embodiment 2
(1) 5g polyether-ether-ketones (PEEK) brown cylindrical particles are accurately weighed, in being put into 100ml flasks, 50mL is poured slowly into
98% dense H2SO4, it is placed in the heating of thermostat water bath mechanical agitation.4h to PEEK is stirred under the conditions of 80 DEG C, 500r/min completely molten
Solution, obtains brown yellow solution.Above-mentioned brown yellow solution is slowly dropped in a large amount of mixture of ice and water, white solid state thing is formed,
Again deionized water is repeatedly washed, until cleaning mixture pH close 7.The polymer of washing is dried into 12h at 80 DEG C of baking oven, is obtained
Product sulfonated polyether-ether-ketone (SPEEK).
(2) 5g polyether sulfones (PES) white plates are accurately weighed, in being put into 100ml flasks, 50mL 98% is poured slowly into
Dense H2SO4, it is placed in the heating of thermostat water bath mechanical agitation.4h to PES is stirred under the conditions of 80 DEG C, 500r/min to be completely dissolved, and is obtained
To milky homogeneous phase solution.Above-mentioned milky white solution is slowly dropped in a large amount of mixture of ice and water, white solid state thing is formed, then
Deionized water is repeatedly washed, until cleaning mixture pH close 7.The polymer of washing is dried into 12h at 80 DEG C of baking oven, is produced
Thing sulfonated polyether sulfone (SPES).
(3) 1g sulfonated polyether-ether-ketones (SPEEK) and 3g sulfonated polyether sulfones (SPES) solid are accurately weighed, is put into ready
In 100ml beakers, 30mL DMFs (DMF) are poured slowly into, are placed in constant temperature blender with magnetic force stirring, be maintained at
60 DEG C, stir under the conditions of 500r/min, obtain dissolving thick liquid.The thick liquid of upper step is sub-packed in centrifuge tube, in 5000r/
The step of 5min, repeated centrifugation are centrifuged under min rotating speeds 2～3 times, takes supernatant and is casting solution.Flat glass first uses detergent
Cleaning, the rinsing of rear diluted acid, then with soaked in absolute ethyl alcohol a few hours after, finally rinsed well with pure water.By appropriate casting solution
It is poured on glass pane surface and is cast into film liquid in uniform thickness, be steadily put in baking oven and be dried after 5h at 70 DEG C of decompression drying, then puts
3h is dried at 110 DEG C, is immersed in deionized water after natural cooling, take off film, dried at room temperature, preserved, obtain described
SPEEK-SPES gas regulation composite membranes.
The overall shape appearance figure of the present embodiment gained SPEEK-SPES gas regulation composite membranes is as shown in Figure 2.
Embodiment 3
(1) 5g polyether-ether-ketones (PEEK) brown cylindrical particles are accurately weighed, in being put into 100ml flasks, 50mL is poured slowly into
98% dense H2SO4, it is placed in the heating of thermostat water bath mechanical agitation.4h to PEEK is stirred under the conditions of 80 DEG C, 500r/min completely molten
Solution, obtains brown yellow solution.Above-mentioned brown yellow solution is slowly dropped in a large amount of mixture of ice and water, white solid state thing is formed,
Again deionized water is repeatedly washed, until cleaning mixture pH close 7.The polymer of washing is dried into 12h at 80 DEG C of baking oven, is obtained
Product sulfonated polyether-ether-ketone (SPEEK).
(2) 5g polyether sulfones (PES) white plates are accurately weighed, in being put into 100ml flasks, 50mL 98% is poured slowly into
Dense H2SO4, it is placed in the heating of thermostat water bath mechanical agitation.4h to PES is stirred under the conditions of 80 DEG C, 500r/min to be completely dissolved, and is obtained
To milky homogeneous phase solution.Above-mentioned milky white solution is slowly dropped in a large amount of mixture of ice and water, white solid state thing is formed, then
Deionized water is repeatedly washed, until cleaning mixture pH close 7.The polymer of washing is dried into 12h at 80 DEG C of baking oven, is produced
Thing sulfonated polyether sulfone (SPES).
(3) 3g sulfonated polyether-ether-ketones (SPEEK) and 1g sulfonated polyether sulfones (SPES) solid are accurately weighed, is put into ready
In 100ml beakers, 30mL DMFs (DMF) are poured slowly into, are placed in constant temperature blender with magnetic force stirring, be maintained at
60 DEG C, stir under the conditions of 500r/min, obtain dissolving thick liquid.The thick liquid of upper step is sub-packed in centrifuge tube, in 5000r/
The step of 5min, repeated centrifugation are centrifuged under min rotating speeds 2～3 times, takes supernatant and is casting solution.Flat glass first uses detergent
Cleaning, the rinsing of rear diluted acid, then with soaked in absolute ethyl alcohol a few hours after, finally rinsed well with pure water.By appropriate casting solution
It is poured on glass pane surface and is cast into film liquid in uniform thickness, be steadily put into decompression drying in baking oven, be dried after 6h at 80 DEG C, then puts
4h is dried at 105 DEG C, is immersed in deionized water after natural cooling, take off film, dried at room temperature, preserved, obtain described
SPEEK-SPES gas regulation composite membranes.
The overall shape appearance figure of the present embodiment gained SPEEK-SPES gas regulation composite membranes is as shown in Figure 3.
Product structure is characterized and application performance test：
(1) Electronic Speculum pretreatment is scanned to the gained SPEEK-SPES gas regulation composite membranes of embodiment 1, sample presentation analysis is surveyed
Scanning electron microscope is done at examination center, obtains surface electron-microscope scanning figure and section electron-microscope scanning figure is distinguished as shown in Figure 4 and Figure 5.By Fig. 4
With Fig. 5 as can be seen that composite film surface has intensive circle bag raised, not aperture.Section electron microscope also presents embedding
Structure.Take this as a foundation, may certify that SPEEK-SPES gas regulations composite film surface does not have the hole of Nano grade, but
It is the hole that internally there is micron level.
(2) controlled atmosphere effect propety test is carried out to the gained SPEEK-SPES gas regulations composite membrane of embodiment 1～3：Will be upper
Hai Qing determines balance end CO after weighing using 3051H type fruit and vegerable respirometer2Concentration.
Fresh Brassica rapa L is taken, being put in 4 DEG C of refrigerators carries out fresh-keeping pretreatment.Unabroken Brassica rapa L one is taken out at random,
Its quality is determined, in being placed in 3051H type fruit and vegerable respirometer respiratory chambers, in respiratory chamber upper end the institute of embodiment 1～3 is covered respectively
SPEEK-SPES gas regulation composite membranes, it is ensured that composite membrane can cover respiratory chamber upper end, and by whole respiratory chamber with black
Cloth is muffled, and impact is produced on experimental result to prevent green vegetable from carrying out photosynthesis.Setting matched group：By SPEEK-SPES gas
Body adjusts composite membrane and is replaced with conventional seals lid, and other experiment conditions are constant, determines the CO of different time sections under the same conditions2
Concentration, as a result as shown in Figure 6.As seen from Figure 6, equilibrium carbon dioxide (CO2) concentration from high to low be respectively SPEEk with
SPES ratios are 1:1 (embodiment 1), 3:1 (embodiment 3), 1:The controlled atmosphere composite membrane of 3 (embodiments 2), the balance two of these three films
Oxidation concentration of carbon is respectively 4430,4173,3058ppm, be intended to the equilibrium carbon dioxide concentration less than matched group.CO2Balance is dense
Degrees of data result shows that present invention gained SPEEK-SPES gas regulation composite membranes have preferable controlled atmosphere ability, fresh-keeping effect
Well.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention not by above-described embodiment
Limit, other any spirit and the changes, modification, replacement made under principle without departing from the present invention, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (9)
1. a kind of preparation method of SPEEK-SPES gas regulations composite membrane, it is characterised in that including following preparation process：
(1) PEEK is added in container, is subsequently adding dense H2SO4, heated and stirred to PEEK is completely dissolved, and obtains brown color molten
Liquid, gained brown yellow solution is added drop-wise in mixture of ice and water, forms white solid state thing, and solids are scrubbed, dry, obtain
SPEEK；
(2) PES is added in container, is subsequently adding dense H2SO4, heated and stirred to PES is completely dissolved, and obtains milky homogeneous
Solution, gained homogeneous phase solution is added drop-wise in mixture of ice and water, forms white solid state thing, and solids are scrubbed, dry, obtain
SPES；
(3) SPEEK and SPES are dissolved in together in DMF, obtain casting solution, then by casting solution on flat board casting film-forming, do
It is dry, film is taken off, obtain the SPEEK-SPES gas regulations composite membrane.
2. the preparation method of a kind of SPEEK-SPES gas regulations composite membrane according to claim 1, it is characterised in that：Step
Suddenly the washing described in (1) and step (2) refers to that it is neutrality to be washed with deionized to cleaning mixture pH；Described drying is referred to
12h is dried at 80 DEG C.
3. the preparation method of a kind of SPEEK-SPES gas regulations composite membrane according to claim 1, it is characterised in that：Step
Suddenly the mass ratio that SPEEK described in (3) and SPES is added is 3:1～1:3.
4. the preparation method of a kind of SPEEK-SPES gas regulations composite membrane according to claim 1, it is characterised in that：Step
Suddenly the casting solution described in (3) is removing insoluble matter using front first Jing centrifugations；SPEEK and SPES total quality in the casting solution
Concentration is 5%～18%.
5. the preparation method of a kind of SPEEK-SPES gas regulations composite membrane according to claim 1, it is characterised in that：Institute
The flat board stated refers to glass plate, and the glass plate is first being cleaned using front with purificant, is rinsed by diluted acid, then with anhydrous
Ethanol soaks, finally clean with ultrapure water, dry for standby.
6. the preparation method of a kind of SPEEK-SPES gas regulations composite membrane according to claim 1, it is characterised in that：Step
Suddenly the drying described in (3) refers to first dry 4～6h at 60～80 DEG C, and 2～4h is dried at 105～121 DEG C.
7. the preparation method of a kind of SPEEK-SPES gas regulations composite membrane according to claim 1, it is characterised in that：Step
Suddenly described in (3) take off film refer to immersion deionized water in carry out taking off film.
8. a kind of SPEEK-SPES gas regulations composite membrane, it is characterised in that：By the side described in any one of claim 1～7
Method is prepared.
9. application of the SPEEK-SPES gas regulation composite membranes described in claim 8 in fruit and vegetable air-conditioning preservation.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531765A (en) * | 2009-04-10 | 2009-09-16 | 天津大学 | Method for preparing sulfonated polymer films |
| CN102945972A (en) * | 2012-09-07 | 2013-02-27 | 四川大学 | Preparation method of composite proton exchange membrane for all vanadium redox flow battery |
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2016
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531765A (en) * | 2009-04-10 | 2009-09-16 | 天津大学 | Method for preparing sulfonated polymer films |
| CN102945972A (en) * | 2012-09-07 | 2013-02-27 | 四川大学 | Preparation method of composite proton exchange membrane for all vanadium redox flow battery |
Non-Patent Citations (1)
| Title |
|---|
| 高启君等: ""SPEEK/PES-C、SPEEK/SPES-C共混质子交换膜研究"", 《高分子学报》 * |
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