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Method for preparing magnetic/hollow double-shell layer print adsorbent by emulsion polymerization

An emulsion polymerization, imprinted adsorption technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems affecting the human central nervous system, endocrine disruption, disturbance of consciousness, etc. The effect of identification performance, reduction of non-specific adsorption, and good magnetic response properties

Inactive Publication Date: 2015-06-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But some studies suggest that pyrethroid insecticides may predispose to disturbance of consciousness and seizures, affect the central nervous system in humans, and are also suspected of having endocrine disrupting effects

Method used

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  • Method for preparing magnetic/hollow double-shell layer print adsorbent by emulsion polymerization
  • Method for preparing magnetic/hollow double-shell layer print adsorbent by emulsion polymerization
  • Method for preparing magnetic/hollow double-shell layer print adsorbent by emulsion polymerization

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Experimental program
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Effect test

Embodiment 1

[0038] 1, a kind of Pickering emulsion polymerization prepares the method for magnetic / hollow double-shell imprinted adsorbent, it is characterized in that carrying out according to the following steps:

[0039] (1) Hydrophilic Fe 3 o 4 Synthesis of Nanoparticles

[0040] 4. Mix 5380g of tetramethylammonium hydroxide and 22ml of deionized water into a solution, and stir mechanically at 70°C. Subsequently, 1.3gFeCl 3 ·6H 2 O and 0.5gFeCl 2 4H 2 O was dissolved in 6.0ml of water and transferred to a solution of tetramethylammonium hydroxide. After the mixture was stirred for 30 minutes, the prepared Fe was collected with a permanent magnet. 3 o 4 Nanoparticles. Wash several times with deionized water and ethanol. The prepared hydrophilic Fe 3 o 4 The nanoparticles were vacuum dried at 60°C.

[0041] (2) Synthesis of magnetic / hollow double-shell imprinted adsorbents

[0042] First, 0.05g of hydrophilic Fe 3 o 4 Nanoparticles, 0.286g NaCl and 0.15g attapulgite were ...

Embodiment 2

[0059] 1, a kind of Pickering emulsion polymerization prepares the method for magnetic / hollow double-shell imprinted adsorbent, it is characterized in that carrying out according to the following steps:

[0060](1) Hydrophilic Fe 3 o 4 Synthesis of Nanoparticles

[0061] 5. Mix 4369g of tetramethylammonium hydroxide and 22ml of deionized water into a solution, and stir mechanically at 70°C. Subsequently, 1.5gFeCl 3 ·6H 2 O and 0.5gFeCl 2 4H 2 O was dissolved in 6.0ml of water and transferred to a solution of tetramethylammonium hydroxide. After the mixture was stirred for 30 minutes, the prepared Fe was collected with a permanent magnet. 3 o 4 Nanoparticles. Wash several times with deionized water and ethanol. The prepared hydrophilic Fe 3 o 4 The nanoparticles were vacuum dried at 60°C.

[0062] (2) Synthesis of magnetic / hollow double-shell imprinted adsorbents

[0063] First, 0.08 g of prepared hydrophilic Fe 3 o 4 Nanoparticles, 0.355g NaCl and 0.2g attapulgi...

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Abstract

The invention relates to a method for preparing magnetic / hollow double-shell layer print adsorbent by emulsion polymerization and belongs to the technical field of the preparation of environment function materials. Attapulgite is used as stabilizer; a few Fe3O4 nanometer particles are used as a magnetic separation carrier; a dispersion solution of hydrophilic Fe3O4 nanometer particles and attapulgite is used as a water phase; and a mixture of organic solvent hexadecane, cross-linking agent styrene, template molecule cyhalothrin, initiator azo isobutyric dimethyl ester and functional monomers acrylamide and tetra-vinyl pyridine is used as an oil phase. The water phase and the oil phase are mixed to prepare stable oil-in-water emulsion in an ultrasonic manner; and the magnetic hollow double-shell layer print polymer is prepared by emulsion polymerization. The magnetic hollow double-shell layer print polymer can be applied to selective recognition and separation of cyhalothrin in an aqueous solution. The magnetic hollow double-shell layer print polymer has a hollow double-layer structure, wherein the hollow structure can be used for effectively increasing adsorption capacity; the strength of the obtained printer polymer is enabled to be high by the inorganic particle layer in the shell layer; and the recognition points are unlikely to be damaged.

Description

technical field [0001] The invention relates to a method for preparing a magnetic hollow double-shell imprinted adsorbent by using Pickering emulsion polymerization, which belongs to the technical field of preparation of environmental functional materials. Background technique [0002] Pyrethroids are synthetic analogs of the natural insecticide permethrin. Due to its high efficacy at low doses, pyrethroids are used in agriculture instead of organochlorine and organophosphorus insecticides. In recent years, pyrethroids have been found in surface water and sediments. Although compared with organochlorine and organophosphorus pesticides, pyrethroid pesticides exhibit relatively low toxicity to mammals. However, some studies have shown that pyrethroid insecticides may easily cause disturbance of consciousness and seizures, affect the human central nervous system, and are also suspected of having endocrine disrupting effects. Therefore, it is necessary to selectively remove p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F220/56C08F2/44C08F2/22C08K3/22C08K3/34C08J9/28B01J20/26B01J20/30B01J20/28
Inventor 潘建明李林子戴江栋孟敏佳卫潇
Owner JIANGSU UNIV
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