Reverse osmosis membrane containing aquaporins and preparation method of reverse osmosis membrane

An aquaporin and reverse osmosis membrane technology, applied in the field of water treatment, can solve the problem of weak binding force between the support membrane and the active membrane, and achieve the effects of long service life, good stability and improved strength

Inactive Publication Date: 2017-05-31
宁波日新恒力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composite reverse osmosis membrane containing aquaporin and its preparation method to solve the defect of weak binding force between the support membrane and the active membrane in the prior art

Method used

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  • Reverse osmosis membrane containing aquaporins and preparation method of reverse osmosis membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Spray dichloromethane evenly on the surface of polysulfone support membrane to dissolve the upper surface of polysulfone, then evenly spray 1,4-dichloromethoxybutane and catalyst SnCl 4 , place the membrane on a shaker and shake slightly, react at room temperature (25° C.) for 6 hours, and obtain a chloromethylated polysulfone membrane after post-treatment.

[0037] At room temperature (25° C.), soak the chloromethylated polysulfone membrane in ethylenediamine for a reaction time of 60 minutes, and obtain an ammoniated polysulfone membrane after post-treatment.

[0038] Prepare an aqueous solution of m-phenylenediamine with a mass fraction of 5.5wt%, 0.1mg / mL aquaporin vesicles, 0.2wt% NaOH, and 0.1wt% SDS, add 0.05mol of 4-dimethylaminopyridine, and stir for 10min .

[0039] Soak the ammoniated polysulfone membrane in 0.1% trimesoyl chloride-n-hexane solution for 3 minutes, take out and soak in the m-phenylenediamine aqueous solution of the vesicles containing aquapori...

Embodiment 2

[0041] Spray dichloromethane evenly on the surface of polysulfone support membrane to dissolve the upper surface of polysulfone, then evenly spray trimethylchlorosilane and catalyst SnCl 4 , add paraformaldehyde, place the membrane on a shaker and shake slightly, react at 35°C for 12 hours, and obtain a chloromethylated polysulfone membrane after post-treatment.

[0042] At room temperature (25° C.), soak the chloromethylated polysulfone membrane in ethylenediamine for a reaction time of 60 minutes, and obtain an ammoniated polysulfone membrane after post-treatment.

[0043] Prepare an aqueous solution of m-phenylenediamine with a mass fraction of 5.5wt%, 0.1mg / mL aquaporin vesicles, 0.2wt% NaOH, and 0.1wt% SDS, add 0.05mol of 4-dimethylaminopyridine, and stir for 10min .

[0044] Soak the ammoniated polysulfone membrane in 0.1wt% trimesoyl chloride-n-hexane solution for 3 minutes, take it out and soak it in the m-phenylenediamine aqueous solution of the vesicles containing a...

Embodiment 3

[0046] Spray dichloromethane evenly on the surface of polysulfone supporting membrane to dissolve the upper surface of polysulfone, then evenly spray chloromethyl alkyl ether and catalyst anhydrous zinc oxide, place the membrane on an oscillator for slight vibration, and react at 40°C After 5 hours, the chloromethylated polysulfone membrane was obtained after post-treatment.

[0047] At room temperature (25° C.), soak the chloromethylated polysulfone membrane in ethylenediamine for a reaction time of 60 minutes, and obtain an ammoniated polysulfone membrane after post-treatment.

[0048] Prepare an aqueous solution of m-phenylenediamine with a mass fraction of 5.5wt%, 0.1mg / mL aquaporin vesicles, 0.2wt% NaOH, and 0.1wt% SDS, add 0.05mol of 4-dimethylaminopyridine, and stir for 10min .

[0049] Soak the ammoniated polysulfone membrane in 0.1wt% trimesoyl chloride-n-hexane solution for 3 minutes, take it out and soak it in the m-phenylenediamine aqueous solution of the vesicles...

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Abstract

The invention discloses a reverse osmosis membrane containing aquaporins and a preparation method of the reverse osmosis membrane. According to the preparation method of the reverse osmosis membrane, modification is carried out on the surface of a polysulfone support membrane, an amino functional group is grafted, amino participates into interfacial polymerization reaction of polyamide, and connection between a polysulfone support layer and a polyamide active layer is acting force of a chemical bond, so that the binding force between the polysulfone support layer and the polyamide active layer is strengthened to effectively prolong the service life of the composite reverse osmosis membrane.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a composite reverse osmosis membrane containing aquaporin and a preparation method thereof. Background technique [0002] Membrane separation technology is the fastest-growing new technology in the current water treatment industry. As the water treatment membrane with the highest filtration precision, reverse osmosis membrane has the characteristics of high desalination rate, and is widely used in water purification, sewage reuse, brackish water desalination and seawater desalination. [0003] The composite reverse osmosis membrane containing aquaporin (AQP) is a kind of reverse osmosis membrane. At present, in the industrial preparation method of the composite reverse osmosis membrane containing aquaporin (AQP), the most commonly used method is the method of encapsulating vesicles containing AQP with a polymer membrane, which mainly passes the diamine / polyamine aqueous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/82B01D69/12B01D67/00B01D61/02C02F1/44
CPCB01D71/82B01D61/025B01D67/0006B01D69/12B01D2325/24C02F1/441
Inventor 不公告发明人
Owner 宁波日新恒力科技有限公司
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