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Method for preparing magnetic molecularly imprinted polymer through suspension polymerization

A technology of magnetic molecular imprinting and suspension polymerization, which is applied to alkali metal compounds, chemical instruments and methods, and other chemical processes, can solve the problems of lack of specific recognition ability and poor selectivity, and achieve good magnetic response performance and strong Adsorption performance and thermal stability performance, the effect of rapid separation

Inactive Publication Date: 2014-06-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of polymer adsorbent has poor selectivity and does not have specific recognition ability. Therefore, achieving high selectivity adsorption is one of the difficulties in the production process of adsorbents.

Method used

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  • Method for preparing magnetic molecularly imprinted polymer through suspension polymerization
  • Method for preparing magnetic molecularly imprinted polymer through suspension polymerization
  • Method for preparing magnetic molecularly imprinted polymer through suspension polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Synthesis of ferroferric oxide (Fe 3 o 4 ) magnetic nanoparticles:

[0044] Ferric chloride hexahydrate (FeCl 3 ·6H 2 O) and anhydrous sodium acetate (NaAc) are dissolved in ethylene glycol solution, wherein control FeCl 3 ·6H 2 The ratio of O, NaAc and ethylene glycol is (1.3:7:40) (g / mL / mL). The mixed solution was stirred in a constant temperature water bath at 160°C at a speed of 800 rpm / min under the protection of nitrogen for 1 h, then the mixed solution was transferred to a 50ml reaction kettle, the temperature was controlled at 200°C, and the reaction time was 10 h. After cooling to room temperature, the suspension was washed three times with ethanol solution, and the obtained product was dried in a vacuum environment at 60° C., and finally pulverized and ground in a mortar.

[0045] (2) Oleic acid on Fe 3 o 4 Magnetic nanoparticles for surface modification

[0046] The Fe prepared in step (1) 3 o 4 Nanoparticles were mixed with oleic acid and cont...

Embodiment 2

[0064] (1) Synthesis of ferric oxide (Fe 3 o 4 ) magnetic nanoparticles:

[0065] Ferric chloride hexahydrate (FeCl 3 ·6H 2 O) and anhydrous sodium acetate (NaAc) are dissolved in ethylene glycol solution, wherein control FeCl 3 ·6H 2 O, the ratio of NaAc and ethylene glycol is (1.4:8:50) (g / mL / mL). The mixed solution was stirred in a constant temperature water bath at 160 °C for 2 h at a speed of 800 rpm / min under the protection of nitrogen, and then the mixed solution was transferred to a 50 mL reactor, the temperature was controlled at 200 °C, and the reaction time was 10 h. After taking it out, it was cooled to room temperature, and the suspension was washed 5 times with ethanol solution, and the obtained product was dried in a vacuum environment at 60° C., and finally pulverized and ground in a mortar.

[0066] (2) Oleic acid on Fe 3 o 4 Magnetic nanoparticles for surface modification

[0067] The Fe prepared in step (1) 3 o 4 Nanoparticles were mixed with olei...

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Abstract

The invention relates to a method for preparing magnetic molecularly imprinted polymers (MIPs) through suspension polymerization, belonging to the technical field of preparation of environmental functional materials. In particular, in the method for preparing the magnetic MIPs through suspension polymerization, Fe3O4 magnetic particles are synthesized through a hydrothermal synthesis method, methacrylic acid is taken as a functional monomer, 2,4,6-trichlorophenol (2,4,6-TCP) is taken as template molecules, azodiisobutyronitrile is taken as an initiator, methylbenzene is taken as a pore-foaming agent, ethylene glycol dimethacrylate is taken as a crosslinking agent, and polyvinyl alcohol is taken as a stabilizing agent. The obtained MIPs are regular spheres, holes of specific shapes and sizes left by a plurality of template molecules are formed in the surfaces of the polymers, and specifically-arranged binding sites are arranged in the holes. By adopting the MIPs, highly-selective adsorption of a target pollutant, namely, 2,4,6-trichlorophenol can be realized.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental functional materials, relates to a method for preparing magnetic molecularly imprinted polymers through suspension polymerization, and is applied to selectively adsorb and separate chlorophenol pollutants in water environments. Background technique [0002] Chlorophenol pollutants are versatile raw materials commonly used in the chemical industry. Since the 1930s, chlorophenols have been widely used as insecticides, herbicides, and wood preservatives. Wastewater from the pesticide, wood, pharmaceutical, dye manufacturing, and paper and pulp industries is the most important source of chlorophenol contamination. Chlorophenol pollutants can cause many human diseases, such as respiratory diseases, cardiovascular diseases, and gastrointestinal diseases, and most chlorophenol pollutants are considered to be human carcinogens. The Environmental Protection Agency (EPA) has listed chl...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F220/06C08F2/20C08F2/44C08J9/26C08K9/04C08K3/22B01J20/26B01J20/28B01J20/30C02F1/28
Inventor 于萍闫永胜孙启隆段会杰潘建明戴江栋
Owner JIANGSU UNIV
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