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Magnetic hydrophilic molecular imprinting composite material and preparation method thereof

A technology of molecular imprinting and composite materials, applied in the field of material chemistry, can solve problems such as weakening, limitation of application range, loss of magnetism, etc.

Inactive Publication Date: 2017-03-29
中华人民共和国淮安出入境检验检疫局
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Problems solved by technology

However, MNPs are attached to the polymer brush through reversible coordination, so the magnetic properties of the composite may be lost or weakened in some environments, such as a stronger acidic environment or in the presence of a stronger complexing agent.
This defect greatly limits the scope of application

Method used

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  • Magnetic hydrophilic molecular imprinting composite material and preparation method thereof
  • Magnetic hydrophilic molecular imprinting composite material and preparation method thereof
  • Magnetic hydrophilic molecular imprinting composite material and preparation method thereof

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Embodiment Construction

[0034] In the preferred embodiment of the present invention, the synthetic route of the magnetic hydrophilic molecularly imprinted composite material 5 is as follows figure 1 shown.

[0035] (1): Synthesis of aminated magnetic nanoparticles (A-MNP) 1

[0036] Under stirring, dissolve 2.00 g (7.41 mmol) of ferric chloride hexahydrate into 60 mL of ethylene glycol, then add 4.00 g (48.78 mmol) of anhydrous sodium acetate and continue stirring for 30 minutes, then add 1,6 - 13.00 grams (111.87 mmol) of hexamethylenediamine, until 1,6-hexamethylenediamine is completely dissolved, all the mixed solution is poured into a polytetrafluoroethylene-lined autoclave and reacted at 198 degrees Celsius for 6 hours to obtain aminated Magnetic Fe 3 o 4 nanoparticles. The obtained aminated magnetic nanoparticles were washed three times with water and ethanol respectively, and then dried in vacuum.

[0037] In other embodiments, ethylene glycol can also be replaced by diethylene glycol, an...

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Abstract

The invention provides a magnetic hydrophilic molecular imprinting composite material which can be suitable for various severe environments and has the pure water combination property. The magnetic hydrophilic molecular imprinting composite material takes a de-templated organic polymer molecular imprinting microsphere with a surface branchknot provided with chain polymer brushes as a center, the de-templated organic polymer molecular imprinting microsphere with the surface branchknot provided with the chain polymer brushes generates the chain polymer brushes through a surface initiated active free radical polymerization reaction, and multiple inorganic magnetic nano-particles are connected to each chain polymer brush through a covalent organic reaction. The composite material synthesizes the template molecule recognition capacity of the organic part and the magnetic response of the inorganic part, due to the fact that the inorganic magnetic nano-particles of the composite material are modified on the MIP microsphere through an irreversible covalent bond, good magnetism can be kept under various severe conditions, and the composite material can be repeatedly used. The invention further provides a preparation method of the composite material. The method is simple, easy to implement and low in cost.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to a magnetic hydrophilic molecule imprinted composite material and a preparation method thereof. Background technique [0002] Molecular Imprinted Polymers (MIP) and related materials are special synthetic receptors, which are a kind of cross-linked polymers with holes of fixed size and shape inside and functional groups with definite arrangement. It is customized according to imprinted molecules, so it has a special molecular structure and functional groups, and has high affinity and specific recognition ability for template molecules. Therefore, molecular imprinting technology is considered as one of the most promising techniques for sample purification and concentration, and has attracted great attention in the field of analytical chemistry. Although molecular imprinting technology has achieved rapid development in the past decade, there are still unresol...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C08F226/06C08F222/14
Inventor 冯民李恒业魏云计王小晋
Owner 中华人民共和国淮安出入境检验检疫局
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