Methods for preparing and using sudan red magnetic molecularly imprinted polymer

A magnetic molecular imprinting and Sudan red technology, which is applied in the field of preparation of Sudan red magnetic molecularly imprinted polymers, can solve problems such as uneven spatial network structure, and achieve the effects of easy availability of raw materials, improved adsorption and separation efficiency, and mild implementation conditions.

Inactive Publication Date: 2013-04-24
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to solve the "solution polymerization" phenomenon that exists in the existing separation / purification Sudan I magnetic molecularly imprinted polymer synthesis process, and the obtained separation / purification Sudan red I magnetic molecularly imprinted polymer has uneven space In view of the problem of network structure, a preparation method of Sudan red magnetic molecularly imprinted polymer and a method of using Sudan red magnetic molecularly imprinted polymer are provided

Method used

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  • Methods for preparing and using sudan red magnetic molecularly imprinted polymer
  • Methods for preparing and using sudan red magnetic molecularly imprinted polymer
  • Methods for preparing and using sudan red magnetic molecularly imprinted polymer

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specific Embodiment approach 1

[0013] Specific embodiment 1: This embodiment is a preparation method of Sudan red magnetic molecularly imprinted polymer, which is specifically completed according to the following steps:

[0014] 1. Fe 3 O 4 Preparation: First, FeCl 2 ·4H 2 O and FeCl 3 ·6H 2 O is completely dissolved in distilled water, and then heated in a water bath at a temperature of 80℃~90℃, heated to 80℃~90℃, and added NH under nitrogen protection 3 ·H 2 O, and react for 1h~2h at a temperature of 80℃~90℃ and a stirring speed of 400rmp~600rmp, and then use a magnet for magnetic separation to obtain a black solid product. The black solid product is washed with distilled water and washed to the waste water after washing. Until the pH is neutral, Fe can be obtained after drying to constant weight 3 O 4 ;

[0015] 2. Magnetic SiO 2 Preparation: First, the mass fraction of 20%~50% ethanol aqueous solution, NH 3 ·H 2 O and Tetraethyl Orthosilicate are added in sequence with Fe 3 O 4 In the container, and at room t...

specific Embodiment approach 2

[0026] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the crosslinking agent in step 5 (2) is ethylene glycol dimethacrylate, divinylbenzene, trimethoxypropane trimethyl Acrylate or pentaerythritol triacrylate. Others are the same as the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the catalyst described in step 5 (2) is CuCl or CuBr. Others are the same as the first or second embodiment.

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Abstract

The invention relates to methods for preparing and using a sudan red magnetic molecularly imprinted polymer. The methods aim to solve the problems that the conventional separated / purified sudan red I magnetic molecularly imprinted polymer has a 'solution polymerization' phenomenon in the synthesis process and the obtained separated / purified sudan red I magnetic molecularly imprinted polymer has a non-uniform spatial network structure. The preparation method comprises the following steps of: 1, preparation of Fe3O4; 2, preparation of magnetic SiO2; 3, preparation of aminated magnetic SiO2; 4, preparation of initiator / magnetic SiO2; and 5, polymerization reaction. The using method comprises the following steps of: adding the sudan red magnetic molecularly imprinted polymer into a sample solution containing sudan red, and then sequentially performing oscillatory reaction, magnetic separation and elution. The method is mainly used for preparing the sudan red magnetic molecularly imprinted polymer.

Description

Technical field [0001] The invention relates to a preparation method and a use method of a Sudan red magnetic molecularly imprinted polymer. Background technique [0002] Sudan red is a class of fat-soluble organic colorants. It is widely used in industrial coloring because of its fastness and low price. The main varieties are Sudan Red I, Sudan Red II, Sudan Red III and Sudan Red IV. Studies have shown that Sudan red can be reduced and metabolized into various anilines in organisms, which can cause mice and rabbits to grow tumors in the liver or bladder, which is considered to be a possible carcinogen for humans. However, many businesses still illegally add Sudan red to their products, and news of Sudan red found in chili products, egg products and cosmetics has been reported worldwide. However, the traditional extraction and separation technology of Sudan red has the disadvantages of complicated steps, high consumption of organic solvent and low selectivity. Therefore, it is p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F226/06C08F220/56C08F212/14C08F2/44C08J9/28C08K9/10C08K3/22
Inventor 陈立钢朴春颖李暐
Owner NORTHEAST FORESTRY UNIVERSITY
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