CN101721926A - Sulfonated copolymerized arylene ether ketone compound nano filtration membrane containing Chinazolin ketone and preparation method thereof - Google Patents
Sulfonated copolymerized arylene ether ketone compound nano filtration membrane containing Chinazolin ketone and preparation method thereof Download PDFInfo
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- CN101721926A CN101721926A CN200910220544A CN200910220544A CN101721926A CN 101721926 A CN101721926 A CN 101721926A CN 200910220544 A CN200910220544 A CN 200910220544A CN 200910220544 A CN200910220544 A CN 200910220544A CN 101721926 A CN101721926 A CN 101721926A
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Abstract
The invention discloses a novel sulfonated copolymerized arylene ether ketone compound nano filtration membrane containing Chinazolin ketone structure and a preparation method thereof. The sulfonated copolymerized arylene ether ketone containing Chinazolin ketone structure is a composite layer material and takes the mixture of the reagent of alcohol, ethers and ketone as solvent, polyalcohol, polyphenol, polyamine and the like as addition agent for preparing dip-coating solution. The dip-coating solution is coated on a hyperfiltration basement membrane by the dip-coating method and the hyperfiltration basement membrane is thermally treated at 30-150 DEG C to obtain the novel compound nano filtration membrane. As the molecular chain of the sulfonated copolymerized arylene ether ketone the containing Chinazolin ketone structure is provided with a whole aromatic ring distortion non-coplanar Chinazolin ketone biphenyl structure, thereby featuring higher glass flower transformation temperature, excellent chemical stability, very good antioxidant property and high temperature resistance. The molecular structure of the sulfonated copolymerized arylene ether ketone containing Chinazolin ketone structure is provided with the following constitutional repeating units: wherein R1, R2, R3 can be hydrogen atoms, halogen atoms, methyl or aryl group and X can be the following substances.
Description
Technical field
The invention belongs to the membrane separation technique field, relate to high-performance NF membrane and technology of preparing thereof, specially refer to a kind of sulfonation and contain naphthyridine ketone structure copolymerization aryl ether sulfone NF membrane and preparation method thereof.
Background technology
Nanofiltration is a kind of pressure drive membrane separation process between counter-infiltration and ultrafiltration, the pore diameter range of NF membrane is about several nanometers, it is lower than 200 organic matter to monovalention and molecular weight and removes relatively poorly, and divalence or multivalent ion and the organic matter of molecular weight between 200～1000 is had higher removal efficiency.Owing to have characteristics such as operating pressure is low, energy-conservation, NF membrane has obtained using widely.NF membrane is mainly used in (1) demineralized water and handles, as bitter is softened, desalination.(2) the removing of harmful substance in the drinking water.(3) water, wastewater treatment in.(4) food, beverage, pharmaceutical industry are as the concentrating and desalinating of whey, antibiotic purifying with concentrate etc.(5) the concentrating, separate of the chemical engineering process aqueous solution is as the concentrating of waste water from dyestuff, phenol wastewater processing etc.NF membrane mostly is composite membrane, and the preparation of composite membrane has can distinguish preferred composite bed and support layer material, realizes the optimized advantage of film properties.The preparation method of composite membrane mainly contains: weak solution dip coating, in-situ polymerization method, interfacial polymerization, Plasma Polymerization etc.The developing direction of composite membrane is exploitation resistance to oxidation, anti-free chlorine, high desalination, high water flux, heat-resisting, pollution resistant composite film and extraordinary composite membrane.Composite nanometer filtering film is the polyamide-based composite membrane that is prepared through interfacial polymerization by polyamine and polynary acyl chlorides mostly, because the chlorine-resistant property of polyamide is not good enough, must in former water, add reducing agent during use except that the free chlorine in anhydrating, to guarantee that deterioration does not take place film properties, thereby increased operating cost, also Gei Shui subsequent treatment is brought certain difficulty.So improve the anti-free chlorine performance of film is one of vital task of current composite nanometer filtering film research.
Sulfonated polyether sulfone has acidproof preferably, alkaline-resisting and chlorine-resistant property, is the membrane material of a class function admirable.U.S. Pat 4818387 discloses a kind of preparation method of sulfonated polyether sulfone composite membrane, around the sulfonated polyether sulfone composite membrane that adopts the dip coating preparation soaks in chlorinity is the aqueous solution of 100ppm, the performance of composite membrane is constant substantially, has extraordinary anti-chlorine, oxidation resistent susceptibility.
It is that naphthyridine ketone structure is incorporated on the polyether sulfone molecular backbone that sulfonation contains naphthyridine ketone structure copolymerization aryl ether sulfone, the novel sulfonated polyether sulphone of a class that obtains, introduce in the main polymer chain because full aromatic ring is twisted non-coplanar diazanaphthalene terphenyl structure, give not only high temperature resistant but also soluble excellent combination property of novel polyether sulphone.Contain the prepared film of naphthyridine ketone structure copolymerization aryl ether sulfone by sulfonation, have better choice, higher flux and better heat endurance.Has boundless application prospect in the diffusion barrier field.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of sulfonation and contains naphthyridine ketone structure copolymerization aryl ether sulfone NF membrane and preparation method thereof.
Technical scheme of the present invention is as follows:
Containing naphthyridine ketone structure copolymerization aryl ether sulfone with sulfonation is coating material, constitutes to contain following construction unit in the strand of this base polymer:
R wherein
1, R
2, R
3All can be hydrogen atom, halogen atom, methyl or aryl; X can for
When X is
The time, the sulfonation and copolymerization aryl ether sulfone can be called sulfonation and contain naphthyridine ketone structure hydroquinones type copolymerization aryl ether sulfone (SPPHES); When X is
Or
The time, the sulfonation and copolymerization aryl ether sulfone can be called sulfonation and contain naphthyridine ketone structure '-biphenyl diphenol type copolyether sulfone (SPPBES); When X is
The time, the sulfonation and copolymerization aryl ether sulfone can be called sulfonation and contain naphthyridine ketone structure bisphenol S type copolyether sulfone; When X is
The time, sulfonated polyether sulphone can be called sulfonation and contain naphthyridine ketone structure polyether sulfone (SPPES).
Sulfonation contains the preparation method of naphthyridine ketone structure copolymerization aryl ether sulfone composite nanometer filtering film, comprises the steps:
A) sulfonation with drying contains naphthyridine ketone structure copolymerization aryl ether sulfone, additive joins in the solvent, and the dissolving back is filtered and is mixed with the dip-coating weak solution fully;
B) will support that counterdie is fixed in glass plate or on the machine of filming, the dip-coating weak solution is coated to the surface of film, discharge opeing is heat-treated, and obtains sulfonation and contains naphthyridine ketone structure copolymerization aryl ether sulfone composite nanometer filtering film.
Invention institute adopts and supports counterdie is to have milipore filter or the hollow fiber ultrafiltration membrane that nonwoven supports, and the polymeric material of formation support counterdie is to contain the naphthyridine ketone structure polyether sulphone, contain the naphthyridine ketone structure PAEK, contain the naphthyridine ketone structure poly (aryl ether sulfone ketone), contain in naphthyridine ketone structure copolymerization aryl ether sulfone, bisphenol-a polysulfone, polyether sulfone, Kynoar, the polyacrylonitrile etc. any one or a few blend.
The ion exchange capacity (IEC) that sulfonation of the present invention contains naphthyridine ketone structure copolymerization aryl ether sulfone should be 0.5-3.0mmol/g, and the sulfonation that preferred IEC is 1.0-2.5mmol/g contains naphthyridine ketone structure copolymerization aryl ether sulfone.
To contain the percentage composition of naphthyridine ketone structure copolymerization aryl ether sulfone be 0.5-10% in sulfonation in the dip-coating weak solution of the present invention, is preferably 0.5-5%.
The solvent of dip-coating weak solution of the present invention can be any one or a few the mixture in methyl alcohol, ethanol, EGME, glycol dimethyl ether, ethylene glycol ethyl ether, butyl glycol ether, oxolane, dioxane, acetone, butanone, the water etc.
Dip-coating weak solution of the present invention contains organic additives such as polyalcohol, polyhydric phenols, polyamine or polyethylene glycol, and percentage composition is preferably 5-30% at 0-50%.
Dip-coating weak solution of the present invention can contain inorganic additives such as lithium chloride, lithium nitrate or lithium perchlorate, and the percentage composition of inorganic additive is at 0-3%.
Time of immersion of the present invention is 0.5-10 minute, and heat treatment temperature is 30-150 ℃, and heat treatment time is 5-100 minute.
The specific embodiment
Be described in detail specific embodiments of the invention below in conjunction with technical scheme.Embodiment has listed the preparation technology and the performance of NEW TYPE OF COMPOSITE NF membrane, and these examples only are for the present invention will be described, is not to limit protection domain of the present invention.
Embodiment 1
SPPBES after the drying (sulfonation degree 0.9) 1g is dissolved in the mixed solvent of 41.5g EGME, ethanol and deionized water composition, adds the 7.5g glycerine, be mixed with the dip-coating weak solution.Naphthalene biphenyl polyether sulfone ketone (PPESK) milipore filter of will mixing is fixed on the glass plate, the SPPBES dip-coating weak solution for preparing is coated in ultrafiltration counterdie surface equably, after 5 minutes, and the unnecessary liquid of venting, in 90 ℃ of following heat treatments 30 minutes, obtain the SPPBES composite nanometer filtering film.Soak in water after 24 hours, after 0.5 hour, 1.0MPa measures salt rejection rate and water flux with the 1000mg/L aqueous sodium persulfate solution in precompressed under the 1.2MPa, and the water flux of SPPBES composite nanometer filtering film is 44L/ (m
2H), salt rejection rate reaches 83%.
Embodiment 2
SPPBES after the drying (sulfonation degree 0.9) 1g is dissolved in the mixed solvent of 41.5g EGME, acetone and deionized water composition, adds the 7.5g glycerine, be mixed with the dip-coating weak solution.Naphthalene biphenyl polyether sulfone ketone (PPESK) milipore filter of will mixing is fixed on the glass plate, the SPPBES dip-coating weak solution for preparing is coated in ultrafiltration counterdie surface equably, after 5 minutes, and the unnecessary liquid of venting, in 90 ℃ of following heat treatments 30 minutes, obtain the SPPBES composite nanometer filtering film.Soak in water after 24 hours, after 0.5 hour, 1.0MPa measures salt rejection rate and water flux with the 1000mg/L aqueous sodium persulfate solution in precompressed under the 1.2MPa, and the water flux of SPPBES composite nanometer filtering film is 61L/ (m
2H), salt rejection rate reaches 69%.
Embodiment 3
SPPHES after the drying (sulfonation degree 0.69) 1g is dissolved in the mixed solvent of 27.2g EGME, 6.8g ethanol and 2.5g dimethylacetylamide composition, adds the 12.5g glycerine, be mixed with the dip-coating weak solution.The PPESK milipore filter is fixed on the glass plate, and the SPPHES dip-coating weak solution for preparing is coated in ultrafiltration counterdie surface equably, and after 5 minutes, the unnecessary liquid of venting in 90 ℃ of following heat treatments 30 minutes, obtains the SPPHES composite nanometer filtering film.Soak in water after 24 hours, after 0.5 hour, 1.0MPa measures salt rejection rate and water flux with the 1000mg/L aqueous sodium persulfate solution in precompressed under the 1.2MPa, and the water flux of SPPHES composite nanometer filtering film is 35L/ (m
2H), salt rejection rate reaches 93%.
Embodiment 4
SPPHES after the drying (sulfonation degree 0.7) 1.5g is dissolved in the mixed solvent of 27g EGME, 6.5g ethanol and 2.5g dimethylacetylamide composition, adds the 12.5g glycerine, be mixed with the dip-coating weak solution.The PPESK milipore filter is fixed on the glass plate, and the SPPHES dip-coating weak solution for preparing is coated in ultrafiltration counterdie surface equably, and after 5 minutes, the unnecessary liquid of venting respectively at 70 ℃, 90 ℃, 110 ℃ following heat treatments 30 minutes, obtains the SPPHES composite nanometer filtering film.Soak in water after 24 hours, after 0.5 hour, 1.0MPa measures salt rejection rate and water flux with the 1000mg/L aqueous sodium persulfate solution in precompressed under the 1.2MPa.The salt rejection rate of 70 ℃ of made films of following heat treatment reaches 78%, and water flux is 89L/ (m
2H); The salt rejection rate of 90 ℃ of made films of following heat treatment reaches 84%, and water flux is 69L/ (m
2H); The salt rejection rate of 110 ℃ of made films of following heat treatment reaches 76%, and water flux is 49L/ (m
2H).
Embodiment 5
SPPHES after the drying (sulfonation degree 0.85) 1g is dissolved in the mixed solvent of 27.2g EGME, 6.8g ethanol and 2.5g dimethylacetylamide composition, adds the 12.5g glycerine, be mixed with the dip-coating weak solution.The PPESK milipore filter is fixed on the glass plate, and the SPPHES dip-coating weak solution for preparing is coated in ultrafiltration counterdie surface equably, and after 5 minutes, the unnecessary liquid of venting in 90 ℃ of following heat treatments 30 minutes, obtains the SPPHES composite nanometer filtering film.Soak in water after 24 hours, after 0.5 hour, 1.0MPa measures salt rejection rate and water flux with the 1000mg/L aqueous sodium persulfate solution in precompressed under the 1.2MPa, and the water flux of SPPHES composite nanometer filtering film is 107L/ (m
2H), salt rejection rate reaches 94%.
Embodiment 6
SPPHES after the drying (sulfonation degree 0.65) 1.5g is dissolved in the mixed solvent of 27g EGME, 6.5g ethanol and 2.5g dimethylacetylamide composition, adds the 12.5g glycerine, be mixed with the dip-coating weak solution.The PPESK milipore filter is fixed on the glass plate, and the SPPHES dip-coating weak solution for preparing is coated in ultrafiltration counterdie surface equably, and after 5 minutes, the unnecessary liquid of venting in 90 ℃ of following heat treatments 20 minutes, obtains the SPPHES composite nanometer filtering film.Soak in water after 24 hours, after 0.5 hour, 1.0MPa measures salt rejection rate and water flux with the 1000mg/L aqueous sodium persulfate solution in precompressed under the 1.2MPa, and the water flux of SPPHES composite nanometer filtering film is 43L/ (m
2H), salt rejection rate reaches 87%.
Embodiment 6 made SPPHES composite membranes are handled 2 hours in boiling water after, the water flux of composite membrane is 47L/ (m
2H), it is 88% that salt rejection rate reaches, and water flux is nearlyer 10% than having increased before handling, and that salt rejection rate changes is little, illustrates that composite membrane has extraordinary hear resistance; Prepared composite nanometer filtering film soaked 20 days in the HCl of the 0.1mol/L aqueous solution, the water flux of composite membrane and constant substantially to the salt rejection rate of sodium sulphate; Composite membrane soaked 10 days in the 0.1mol/L NaOH aqueous solution, the water flux of film and constant substantially to the salt rejection rate of sodium sulphate; Composite membrane soaked 20 days in 100mg/L NaClO solution, the water flux of film and constant substantially to the salt rejection rate of sodium sulphate; Illustrate that the SPPES composite membrane has extraordinary acid and alkali-resistance and chlorine-resistant property.
Claims (7)
1. sulfonation contains naphthyridine ketone structure copolymerization aryl ether sulfone composite nanometer filtering film, it is characterized in that the polymer that constitutes composite material contains following construction unit:
R wherein
1, R
2, R
3All be hydrogen atom, halogen atom, methyl or aryl; X is
2. the described sulfonation of claim 1 contains the preparation method of naphthyridine ketone structure copolymerization aryl ether sulfone composite nanometer filtering film, comprises the steps:
A) sulfonation of drying is contained naphthyridine ketone structure copolymerization aryl ether sulfone and be dissolved in solvent and the additive, be mixed with the dip-coating weak solution;
B) the dip-coating weak solution is coated on the support counterdie, discharge opeing is heat-treated, and obtains sulfonation and contains naphthyridine ketone structure copolymerization aryl ether sulfone composite nanometer filtering film;
Supporting counterdie is to have miillpore filter or the doughnut miillpore filter that nonwoven supports, and constitutes the polymeric material that supports counterdie and be to contain the naphthyridine ketone structure polyether sulphone, contain the naphthyridine ketone structure PAEK, contain the naphthyridine ketone structure poly (aryl ether sulfone ketone), contain in naphthyridine ketone structure copolymerization aryl ether sulfone, bisphenol-a polysulfone, polyether sulfone, Kynoar, the polyacrylonitrile etc. any one or a few blend;
The ion exchange capacity that sulfonation contains naphthyridine ketone structure copolymerization aryl ether sulfone is 0.5-3.0mmol/g; To contain the percentage composition of naphthyridine ketone structure copolymerization aryl ether sulfone be 0.5-10% in sulfonation in the dip-coating weak solution;
The dip-coating weak solution contains polyalcohol, polyhydric phenols, polyamine or polyethylene glycol organic additive, and percentage composition is at 0-50%;
Time of immersion is 0.5-10 minute, and heat treatment temperature is 30-150 ℃, and heat treatment time is 5-100 minute.
3. preparation method according to claim 2 is characterized in that: the ion exchange capacity that sulfonation contains naphthyridine ketone structure copolymerization aryl ether sulfone is 1.0-2.5mmol/g.
4. preparation method according to claim 2 is characterized in that: the solvent of dip-coating weak solution is any one or a few the mixture in methyl alcohol, ethanol, EGME, glycol dimethyl ether, ethylene glycol ethyl ether, butyl glycol ether, oxolane, dioxane, acetone, butanone, the water.
5. preparation method according to claim 2 is characterized in that: to contain the percentage composition of naphthyridine ketone structure copolymerization aryl ether sulfone be 0.5-5% in sulfonation in the dip-coating weak solution.
6. preparation method according to claim 2 is characterized in that: the dip-coating weak solution contains inorganic additives such as lithium chloride, lithium nitrate or lithium perchlorate, and percentage composition is at 0-3%.
7. preparation method according to claim 2 is characterized in that: the dip-coating weak solution contains polyalcohol, polyhydric phenols, polyamine or polyethylene glycol organic additive, and percentage composition is at 5-30%.
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1263572A (en) * | 1984-06-15 | 1989-12-05 | Kenichi Ikeda | Sulfonated polysulfone composite semipermeable membranes and process for producing the same |
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| CN102698617B (en) * | 2012-06-08 | 2014-10-08 | 厦门大学 | Acid-alkali polymer blend pervaporation membrane, and preparation method and application thereof |
| CN103788374A (en) * | 2012-10-29 | 2014-05-14 | 中国石油化工股份有限公司 | Sulfonated polyarylether sulfone and preparation method thereof, and reverse osmosis membrane and making method thereof |
| CN103785308A (en) * | 2012-10-29 | 2014-05-14 | 中国石油化工股份有限公司 | Reverse osmosis membrane and its preparation method and application |
| CN103785308B (en) * | 2012-10-29 | 2016-05-25 | 中国石油化工股份有限公司 | A kind of reverse osmosis membrane and its preparation method and application |
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| CN103191656B (en) * | 2013-03-29 | 2015-01-28 | 中国科学技术大学 | Preparation method of polymer micro-filtration membrane |
| CN104248914A (en) * | 2013-06-28 | 2014-12-31 | 中国石油化工股份有限公司 | Reverse osmosis membrane and preparation method thereof |
| CN104248914B (en) * | 2013-06-28 | 2016-06-29 | 中国石油化工股份有限公司 | A kind of reverse osmosis membrane and preparation method thereof |
| CN113522040A (en) * | 2021-07-30 | 2021-10-22 | 天津大学 | Method for preparing high-performance carbon dioxide separation composite membrane containing twisted structure through interfacial polymerization |
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