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Tony red molecular imprinting polymeric material and preparation method thereof

A technology of molecular imprinting and polymeric materials, applied in the field of analytical chemistry, can solve the problems of easily disturbed molecular recognition, low degree of surface structure curing, deep embedding of template molecules, etc., to enhance efficient enrichment and selective matching binding, The effect of accelerating the molecular recognition action speed and high action efficiency

Active Publication Date: 2014-08-27
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a Sudan red molecularly imprinted polymer material and its preparation method, which solves the problem of deep embedding of template molecules in traditional bulk polymerization and precipitation polymerization, long action time, and no surface depth of molecularly imprinted polymers after the polymerization reaction is completed. Cross-linking, small specific surface area, low curing degree of surface structure, easy swelling, and easy interference of molecular recognition

Method used

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  • Tony red molecular imprinting polymeric material and preparation method thereof
  • Tony red molecular imprinting polymeric material and preparation method thereof

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Experimental program
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Embodiment Construction

[0019] (1) Preparation of molecularly imprinted materials

[0020] Accurately pipette 200 mL of acetonitrile, and calculate and determine the total mass of the functional monomer and the cross-linking agent monomer according to the ratio of the total mass of the functional monomer and the cross-linking agent monomer to the total volume of the solvent; 10:50:40, 20:40:40, 25:25:50 ratio, respectively accurately weigh the corresponding functional monomer MMA, VB and cross-linking agent monomer DVB; The ratio of the double bond total molar weight of agent monomer is 2% accurate initiator AIBN;

[0021] After weighing, mix the functional monomer MMA, VB and 2mmol / L Sudan I template molecules together, let stand for 2h; mix the crosslinker monomer DVB and the initiator AIBN, add 200 mL of acetonitrile In the process, nitrogen and deoxygenation were carried out at 0°C for 3-5 minutes, and the mixture was uniformly stirred to obtain a mixed solution; the mixed solution was heated fr...

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Abstract

The invention discloses a tony red molecular imprinting polymeric material and a preparation method thereof. The preparation method comprises the steps of: polymeric precursor preparation, monodisperse microsphere preparation, surface cross-linking reaction and template molecular removing process. According to the preparation method, a high-crosslinking bonding reaction among chlorination aromatic hydrocarbon is introduced while an imprinting molecule is embedded and polymerized on the surface of a precursor polymeric seed surface, so that the polymer surface structure rigidity, the specific surface area and hydrophobic effects can be improved, matching combination between a high-hydrophobic tony red I and other homolog pigments can be facilitated. The preparation method is mild in condition, and the prepared polymeric material is stable and has high acting efficiency, so that the polymeric material and the method can be applied to effective extraction of tony red pigment in foods and feeds.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, and in particular relates to a Sudan red molecularly imprinted polymer material and a preparation method thereof. Background technique [0002] Sudan Red is a synthetic azo industrial dye, insoluble in water but soluble in oil and organic solvents. Because the natural pigment in food is unstable, it is easy to fade after a long period of light. Adding Sudan Red Work No. increases the freshness of the product's appearance. Moreover, Sudan Red is cheap, and is often added to certain foods by unscrupulous merchants to attract consumption. By. [0003] The main group of Sudan red dye is phenylazonaphthol, among which Sudan red II, Sudan red III and Sudan red IV are chemical derivatives of Sudan red I. In terms of multi-component analysis of Sudan Red, the separation and detection of multiple components are mainly achieved by means of chromatographic separation. The main methods include high-perf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/36C08F212/14C08F220/06C08J9/26C08J3/24B01J20/26B01J20/30
Inventor 林旭聪谢增鸿
Owner FUZHOU UNIV