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Preparation method of magnetic porous molecularly imprinted polymer

A technology of molecular imprinting and polymers, which is applied in the fields of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problems of tedious separation and recovery of imprinted adsorbents, time-consuming, limited use efficiency, etc.

Inactive Publication Date: 2017-05-31
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the cumbersome and time-consuming separation and recovery of imprinted adsorbents in the prior art, which limits the use efficiency, and to provide a method for preparing magnetic porous molecularly imprinted polymers

Method used

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  • Preparation method of magnetic porous molecularly imprinted polymer
  • Preparation method of magnetic porous molecularly imprinted polymer
  • Preparation method of magnetic porous molecularly imprinted polymer

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Preparation of Oleic Acid Modified Ferric Oxide Nanoparticles:

[0037] First, 0.5 g of hydrophilic Fe 3 o 4 The nanoparticles were dispersed in a mixed solution of 1 mL chloroform and 1 mL oleic acid, stirred for 1.5 h, and then dried at 120 °C for 24 h to obtain oleic acid-modified Fe 3 o 4 Nanoparticles (Fe 3 o 4 -OA).

[0038] (2) Preparation of magnetic porous molecularly imprinted polymers (MMIPs):

[0039] First, under mechanical stirring, 1.0 mL of styrene (St), 0.2 mL of divinylbenzene (DVB), 0.04 mL of methacrylic acid (MAA), 0.04 g of acrylamide (AM), 0.05 g of cyhalothrin (LC) and 0.06 g of azobisisobutyronitrile (AIBN) were added to a 100 mL round-bottom flask, ultrasonically dispersed for 30 min, and nitrogen was passed through the organic phase and left to stand in the dark, allowing AM, MAA and LC to self-assemble for 12 h. Stir at 400 rpm and add 0.1 g Fe to the organic phase 3 o 4 -OA and 0.5 mL of surfactant Hypermer 2296 to obtain an oil...

Embodiment 2

[0045] (1) Preparation of Oleic Acid Modified Ferric Oxide Nanoparticles:

[0046] First, 1.0 g of hydrophilic Fe 3 o 4 The nanoparticles were dispersed in a mixed solution of 1 mL chloroform and 2 mL oleic acid and stirred for 3 h, then dried at 120 °C for 24 h to obtain oleic acid-modified Fe 3 o 4 Nanoparticles (Fe 3 o 4 -OA).

[0047] (2) Preparation of magnetic porous molecularly imprinted polymers (MMIPs):

[0048] First, under mechanical stirring, 1.5 mL of styrene (St), 0.2 mL of divinylbenzene (DVB), 0.04 mL of methacrylic acid (MAA), 0.04 g of acrylamide (AM), 0.05 g of cyhalothrin (LC) and 0.06 g of azobisisobutyronitrile (AIBN) were added to a 100 mL round-bottom flask, ultrasonically dispersed for 30 min, and nitrogen was passed through the organic phase and left to stand in the dark, allowing AM, MAA and LC to self-assemble for 12 h. Stir at 400 rpm and add 0.2 g Fe to the organic phase 3 o 4 -OA and 0.75 mL of surfactant Hypermer 2296 to obtain an oily ...

Embodiment 3

[0050] (1) Preparation of Oleic Acid Modified Ferric Oxide Nanoparticles:

[0051] First, 1.5 g of hydrophilic Fe 3 o 4 The nanoparticles were dispersed in a mixed solution of 1 mL chloroform and 3 mL oleic acid, stirred for 4.5 h, and then dried at 120 °C for 24 h to obtain oleic acid-modified Fe 3 o 4 Nanoparticles (Fe 3 o 4 -OA).

[0052] (2) Preparation of magnetic porous molecularly imprinted polymers (MMIPs):

[0053] First, under mechanical stirring, mix 2.0 mL of styrene (St), 0.2 mL of divinylbenzene (DVB), 0.04 mL of methacrylic acid (MAA), 0.04 g of acrylamide (AM), 0.05 g of cyhalothrin (LC) and 0.06 g of azobisisobutyronitrile (AIBN) were added to a 100 mL round-bottom flask, ultrasonically dispersed for 30 min, and nitrogen was passed through the organic phase and left to stand in the dark, allowing AM, MAA and LC to self-assemble for 12 h. Stir at 400 rpm and add 0.4 g Fe to the organic phase 3 o 4-OA and 1.0 mL of surfactant Hypermer 2296 to obtain an ...

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Abstract

The invention relates to a preparation method of magnetic porous molecularly imprinted polymer and belongs to the technical field of environment functional material preparation. The preparation method includes: using modified Fe3O4 nano particles as the stable particles and using cyhalothrin (LC) as the template molecule to prepare a Pickering high internal phase emulsion (HIPEs) template, performing thermal-initiation polymerization to obtain the magnetic porous molecularly imprinted polymer, and using the magnetic porous molecularly imprinted polymer as the absorbent to apply to the selective recognition and separation of LC pollutants in an aqueous solution. The magnetic porous molecularly imprinted polymer prepared by the method has the advantages that the magnetic porous molecularly imprinted polymer having a highly through porous structure is good in mechanical performance and thermal stability, sensitive in magnetic response capability, high in absorption capacity, fat in balance time, and evident in LC molecule recognition performance; under an external magnetic field, the fast separation of the magnetic porous molecularly imprinted polymer can be accelerated, and the operation and reutilization efficiency of the absorbent can be increased.

Description

technical field [0001] The invention relates to a preparation method of an imprinted polymer, in particular to a preparation method of a magnetic porous molecular imprinted adsorbent, which belongs to the technical field of preparation of environmental functional materials. Background technique [0002] Cyhalothrin (LC) is a broad-spectrum insecticide with low toxicity and high efficiency, which is widely used in agriculture. However, the unintentional release of LC during use and the residual LC in the natural environment will continue to pollute rivers and groundwater. LC detected in the natural environment will affect the nervous system, genes, immune system, etc. to varying degrees after entering the human body, and has certain endocrine disrupting effects. Therefore, an efficient and fast method to remove LC is needed. [0003] Adsorption is the simplest and most effective method to remove residual organic pesticides in the environment, but the selectivity needs to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/36C08F220/06C08F220/56C08F2/32C08K9/04C08K3/22C08J9/26B01J20/26B01J20/28B01J20/30
CPCB01J20/268B01J20/28009B01J20/28016C08F2/32C08F212/08C08J9/26C08J2325/08C08K3/22C08K9/04C08K2003/2275C08F212/36C08F220/06C08F220/56
Inventor 朱恒佳潘建明黄伟姚俊彤刘金鑫
Owner JIANGSU UNIV
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