Method for preparing ionic imprinting microsphere by taking crown ether as functional monomer in inverse emulsion method

A functional monomer, inverse emulsion technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., to achieve the effects of large adsorption capacity, simple operation and regular shape

Inactive Publication Date: 2014-12-10
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, no one has used crown ethers as functional monomers to prepare ion-imprinted polymers

Method used

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  • Method for preparing ionic imprinting microsphere by taking crown ether as functional monomer in inverse emulsion method
  • Method for preparing ionic imprinting microsphere by taking crown ether as functional monomer in inverse emulsion method
  • Method for preparing ionic imprinting microsphere by taking crown ether as functional monomer in inverse emulsion method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Applying the contents of the present invention, lead ions are used as template ions to prepare crown ether ion-imprinted polymers.

[0034] The preparation of the crown ether ion-imprinted polymer using lead ions as a template comprises the following steps:

[0035] a. Dissolve 0.5 ml Siben-80 and 5 ml EGDMA in 10 ml toluene and N,N-dimethylformamide, then add 350 mg functional monomer 4-vinylphenylpropane-18-crown-6, An oil phase is formed; 331.21 mg of lead nitrate is dissolved in water and fully dissolved to form an inner water phase;

[0036] b. Slowly add the water phase to the oil phase, and ultrasonicate for 5 minutes to form a uniform milky white W / O phase;

[0037] c. The external water phase is 150 ml of 0.2 mol / L SDBS aqueous solution, blow nitrogen gas for 5 minutes to remove oxygen, slowly add the W / O phase into the external water phase, and after the W / O / W inverse emulsion is formed, add 5 g of initiator ammonium persulfate, connected to the condenser, s...

Embodiment 2

[0042] Applying the contents of the present invention, lead ions are used as template ions, and 4-vinylphenylpropane-15-crown-5 is used as functional monomer to prepare ion-imprinted polymers.

[0043] The preparation of the crown ether ion-imprinted polymer using lead ions as a template comprises the following steps:

[0044] a. Dissolve 0.5 ml Siben-80 and 5 ml EGDMA in 10 ml toluene and N,N-dimethylformamide, then add 350 mg functional monomer 4-vinylphenylpropane-18-crown-5, An oil phase is formed; 331.21 mg of lead nitrate is dissolved in water and fully dissolved to form an inner water phase;

[0045] b. Slowly add the water phase to the oil phase, and ultrasonicate for 5 minutes to form a uniform milky white W / O phase;

[0046] c. The external water phase is 150 ml of 0.2 mol / L SDBS aqueous solution, blow nitrogen gas for 5 minutes to remove oxygen, slowly add the W / O phase into the external water phase, and after the W / O / W inverse emulsion is formed, add 5 g of initi...

Embodiment 3

[0051] Applying the contents of the present invention, cadmium ions are used as template ions and 4-vinylphenylpropane-18-crown-6 is used as functional monomer to prepare ion imprinted polymers.

[0052] The preparation of the crown ether ion imprinted polymer using cadmium ion as a template comprises the following steps:

[0053] a. Dissolve 0.5 ml Siben-80 and 5 ml EGDMA in 10 ml toluene and N,N-dimethylformamide, then add 350 mg functional monomer 4-vinylphenylpropane-18-crown-6, An oil phase is formed; 183.4 mg of cadmium chloride is dissolved in water and fully dissolved to form an inner water phase;

[0054] b. Slowly add the water phase to the oil phase, and ultrasonicate for 5 minutes to form a uniform milky white W / O phase;

[0055] c. The external water phase is 150 ml of 0.2 mol / L SDBS aqueous solution, blow nitrogen gas for 5 minutes to remove oxygen, slowly add the W / O phase into the external water phase, and after the W / O / W inverse emulsion is formed, add 5 g o...

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Abstract

The invention relates to a method for preparing ionic imprinting microsphere by taking crown ether as a functional monomer in an inverse emulsion method. The method comprises the following steps of (1) dissolving crown ether functional monomer with a vinyl group, a crosslinking agent and an emulsifier in an organic solvent to stir and dissolve to obtain a liquid mixture as an organic phase; (2) dissolving a template ion in water to be served as an internal water phase; (3) adding the internal water phase to the organic phase to form a water-in-oil prepolymer; (4) adding a surface active agent to water to be as an external water phase; (5) adding the water-in-oil prepolymer formed in the step (3) to the external water phase to form water-in-oil-in-water emulsion; (6) adding an initiator to the water-in-oil-in-water emulsion, charging nitrogen gas to seal and reacting at a certain temperature; (7) washing a polymer obtained through the reaction in an organic solvent; and (8) drying under vacuum to obtain the ionic imprinting microsphere. The method disclosed by the invention has the advantages that the synthesized novel crown ether ionic imprinting polymer has the characteristics of simple preparation method, large adsorption amount, high selectivity and good reproducibility, and is suitable for removal and resource utilization of metal ions in wastewater.

Description

technical field [0001] The invention relates to a method for preparing ion-imprinted microspheres, in particular to a method for preparing ion-imprinted microspheres by using crown ether as a functional monomer inverse emulsion method. Background technique [0002] Due to human factors such as mining, smelting, waste gas discharge, sewage irrigation, and the use of heavy metal products, many heavy metals such as lead, mercury, cadmium, and cobalt have entered the atmosphere, water, and soil, causing serious environmental pollution. At present, the situation of heavy metal pollution in my country's soil and water is serious, and has aroused widespread concern in the society. At present, the removal methods of heavy metal ions mainly include physical adsorption, chemical precipitation, flocculation, etc., but these methods only simply transfer pollutants, and do not fundamentally remove heavy metal pollution or turn heavy metal pollution into resources. Moreover, these method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/14C08F224/00C08F2/30C08J9/26B01J20/26B01J20/30C02F1/28
Inventor 罗旭彪刘玲玲邓芳罗胜联
Owner NANCHANG HANGKONG UNIVERSITY
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