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Preparation and application of Sudan red I molecular imprinted polymeric adsorbent

A technology of molecular imprinting and Sudan red, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of increased preparation costs, increased costs, and high price of fluorocarbon solutions, and achieve excellent mechanical stability and low production costs , the effect of good physical and chemical stability

Inactive Publication Date: 2010-11-10
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the price of fluorocarbon solution is higher, so the cost of preparation is increased, which increases the cost of actual production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) In a stoppered Erlenmeyer flask, add 0.50g of Sudan Red I (dissolved in 15mL of chloroform) and 1.0mL of 4-vinylpyridine into the reactor. After all of them are dissolved, blow in argon for 5min to remove oxygen.

[0023] (2) Add 0.10 g of azobisisobutyronitrile and 10 g of ethylene glycol dimethacrylate to the solution of (1) for 15 minutes of ultrasonic solubilization, then pass in argon gas for 10 minutes to remove oxygen, and seal the triangular flask to isolate it from the air. React in a constant temperature water bath at 60°C for 24 hours to obtain blocky polymer, which is ground into fine particles.

[0024] (3) Soxhlet extraction with a mixed solution of acetic acid and methanol at a volume ratio of 1:9 for 48 hours (ie no template molecule), and then washed with methanol to remove residual acetic acid. Finally, it was eluted with water and methanol, filtered to remove fine particles, and dried in a vacuum oven at 60°C for later use.

Embodiment 2

[0026] (1) In a stoppered Erlenmeyer flask, add 0.50g of Sudan Red I (dissolved in 15mL of chloroform) and 1.0mL of 4-vinylpyridine into the reactor. After all of them are dissolved, blow in argon for 5min to remove oxygen.

[0027] (2) Add 0.10 g of azobisisobutyronitrile and 10 g of ethylene glycol dimethacrylate to the solution of (1) for 15 minutes of sonication, then feed argon gas for 10 minutes to remove oxygen, seal the conical flask and isolate it from the air, and React in a constant temperature water bath at 70°C for 18 hours to obtain blocky polymer, which is ground into fine particles.

[0028] (3) Soxhlet extraction with a mixed solution of acetic acid and methanol at a volume ratio of 1:9 for 48 hours (ie no template molecule), and then washed with methanol to remove residual acetic acid. Finally, it was eluted with water and methanol, filtered to remove fine particles, and dried in a vacuum oven at 60°C for later use.

[0029] An application method of a Sudan ...

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Abstract

The invention discloses a method for preparing a Sudan red I molecular imprinted polymeric adsorbent and application thereof. The method has the main technical characteristics of : adding Sudan red I, 4-vinyl pyridine, azodiisobutyronitrile and ethylene glycol dimethacrylate into a reactor in a certain molar ratio; introducing argon to remove oxygen in a chloroform medium; reacting for 24h at the constant temperature of 60 DEG C to obtain a bulk polymer; grinding the bulk polymer into fine particles; carrying out Soxhlet extraction for 24h with mixed solution of acetic acid and methanol in a volume ratio of 1:9 to remove template Sudan red I molecules; washing off residual organic matter with the methanol; finally eluting the fine particles with water and the methanol; filtering the fine particles to remove superfine particles; and drying the fine particles in vacuum at the temperature of 60 DEG C. The obtained Sudan red I molecular imprinted polymeric adsorbent has the advantages of specific identification ability to Sudan red I, high selectivity, high adsorption rate, high deabsorption performance, high physicochemical stability, high mechanical stability, and regeneration capacity.

Description

technical field [0001] The invention relates to a preparation method and application technology of a molecularly imprinted polymer adsorbent, in particular to a preparation method and application technology of a Sudan red molecularly imprinted polymer. Background technique [0002] Sudan red mainly includes four types: I, II, III and IV. It belongs to the azo oil-soluble industrial pigments. It is mainly used for the coloring of oil paint, gasoline, floor wax and other chemicals. It is listed as three types by the International Agency for Research on Cancer (IARC) One of the carcinogens. All countries in the world have banned the use of Sudan Red in food; driven by economic interests, some people use Sudan Red I as an additive in chili sauce, fermented bean curd and other processed foods to increase their color. Therefore, as soon as possible It is particularly important to establish an accurate and reliable method for the analysis and detection of Sudan Red in food. [00...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F226/06C08F2/02C08J9/26B01J20/26B01J20/285B01J20/30
Inventor 李慧芝许崇娟裴梅山张瑾
Owner UNIV OF JINAN
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