Methods for preparing and using sudan red magnetic molecularly imprinted polymer

A technology of magnetic molecular imprinting and Sudan red, 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: 2014-08-06
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 at a constant temperature in a water bath at a temperature of 80°C to 90°C. After heating to 80°C to 90°C, NH is added under nitrogen protection. 3 ·H 2 O, and react at a temperature of 80°C-90°C and a stirring speed of 400rmp-600rmp for 1h-2h, then use a magnet for magnetic separation to obtain a black solid product, wash the black solid product with distilled water, and wash until 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 is 20%~50% ethanol aqueous solution, NH 3 ·H 2 O and tetraethyl orthosilicate were sequenti...

specific Embodiment approach 2

[0026] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the crosslinking agent described in step five 2. is ethylene glycol dimethacrylate, divinylbenzene, trimethoxypropane trimethyl Acrylates 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 those in Embodiment 1 or 2.

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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 application method of a Sudan red magnetic molecularly imprinted polymer. Background technique [0002] Sudan red is a kind of fat-soluble organic colorant, which is widely used in industrial coloring because of its color 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 aniline substances in the living body, which can cause tumors in the liver or bladder of mice and rabbits, and is considered a possible carcinogen for humans. However, many merchants are still illegally adding Sudan Red to their products, and news of Sudan Red found in chili products, egg products and cosmetics has been reported around the world. However, the traditional extraction and separation technology of Sudan Red has the disadvantages of complicated steps, high consumption of organic solvent and l...

Claims

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Application Information

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Patent Type & Authority Patents(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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