Preparation method of magnetic field controllable anion-exchange membrane

An anion exchange membrane and magnetic field technology, which is applied in anion exchange, anion exchanger materials, ion exchange, etc., can solve the problems of limited application range, single cation exchange performance, and anion performance that cannot be effectively controlled.

Inactive Publication Date: 2018-04-20
桐乡佳车科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The anion exchange membranes prepared in the prior art generally have only a single effect of cation exchange, and their anion passing performance cannot be effectively controlled, and the cation passing rate cannot be adjusted, thus limiting their application range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0031] A method for preparing an anion exchange membrane controlled by a magnetic field, comprising the steps of:

[0032] 1) Preparation of copolymer

[0033] Distilling the two monomers containing amine group-containing polymer units and hydroxyl group-containing polymer units separately under reduced pressure to remove the polymerization inhibitor; adding the amine group-containing polymer unit, hydroxyl group-containing polymer unit and solvent deionized water into a three-necked flask to prepare a copolymer;

[0034] 2) Preparation of spinning solution

[0035] Add the copolymer into the solvent and mechanically stir to prepare a spinning solution, then add magnetic particles and emulsifiers in turn, and stir evenly to obtain a uniform spinning solution. The concentration of the prepared spinning solution is 40wt%; the electrospinning parameter is that the voltage is 5kV, and the solution The flow rate is 0.1 mL·h -1 , the distance between the nozzle and the receiver is...

Embodiment approach 2

[0045] A method for preparing an anion exchange membrane controlled by a magnetic field, comprising the steps of:

[0046] 1) Preparation of copolymer

[0047] Distilling the two monomers containing amine group-containing polymer units and hydroxyl group-containing polymer units separately under reduced pressure to remove the polymerization inhibitor; adding the amine group-containing polymer unit, hydroxyl group-containing polymer unit and solvent deionized water into a three-necked flask to prepare a copolymer;

[0048] 2) Preparation of spinning solution

[0049] Add the copolymer into the solvent and mechanically stir to prepare a spinning solution, then add magnetic particles and emulsifiers in turn, and stir evenly to obtain a uniform spinning solution. The concentration of the prepared spinning solution is 50wt%; The flow rate is 2mL·h-1, and the distance between the nozzle and the receiver is 20cm;

[0050] 3) Preparation of cation exchange membrane

[0051] Electro...

Embodiment approach 3

[0059] A method for preparing an anion exchange membrane controlled by a magnetic field, comprising the steps of:

[0060] 1) Preparation of copolymer

[0061] Distilling the two monomers containing amine group-containing polymer units and hydroxyl group-containing polymer units separately under reduced pressure to remove the polymerization inhibitor; adding the amine group-containing polymer unit, hydroxyl group-containing polymer unit and solvent deionized water into a three-necked flask to prepare a copolymer;

[0062] 2) Preparation of spinning solution

[0063] Add the copolymer into the solvent and mechanically stir to prepare a spinning solution, then add magnetic particles and emulsifiers in turn, and stir evenly to obtain a uniform spinning solution. The concentration of the prepared spinning solution is 45wt%; the electrospinning parameter is a voltage of 12.5kV, The solution flow rate is 0.95 mL h -1 , the distance between the nozzle and the receiver is 9.5cm;

...

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PUM

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Abstract

The invention discloses a preparation method of a magnetic field controllable anion-exchange membrane. The prepared anion-exchange membrane is characterized in that magnetic particles are added and are capable of finely adjusting and controlling the anion exchange rate and exchange form; in addition, the magnetic particles enable an anion-exchange membrane body to be controlled through an externalelectric signal; a stress magnetic field produced by the magnetic particles can directly guide and influence the gathering and exchange of anions. For example, a corresponding magnetic field can be applied to some area of a complete anion-exchange membrane while the local exchange rate is to be increased in the area of the complete anion-exchange membrane, and the additional magnetic field can influence the arrangement and the magnetism direction of the magnetic particles in the exchange membrane, then a magnetic field area is formed on the exchange membrane and is capable of influencing thedistribution density of positive electrons on the anion-exchange membrane, thus the rate of the anions passing through the inside and the outside of the membrane can be changed, and as a result, the effect of adjusting and controlling the anion exchange can be achieved.

Description

technical field [0001] The invention belongs to the technical field of particle exchange membrane preparation, and in particular relates to a method for preparing an anion exchange membrane with controllable magnetic field. Background technique [0002] The ion exchange membrane is a membrane-like ion exchange resin in essence, and it is also a polymer polyelectrolyte containing active exchange groups. There are fixed charged groups on its skeleton, which can partially repel ions with the same charge, allowing Differently charged ions pass through. The permselectivity of ion exchange membranes is the basis of electromembrane separation. The structure of the ion exchange membrane can be mainly divided into two parts: the base membrane and the active group. The basement membrane is an ionomer polymer with a three-dimensional network structure. These network structures communicate with each other to form extremely fine pores. From a microscopic point of view, they are circuit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J41/08B01J41/10B01J41/14
CPCB01J41/08B01J41/10B01J41/14
Inventor 沈利强
Owner 桐乡佳车科技股份有限公司
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