Automatic-assembling method for preparing molecular imprint polyaniline nanocomposite

A technology of nanocomposites and imprinted polymers, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of destroying the preferential hydrogen bonding between template molecules and functional monomers, and limited research, so as to broaden the preparation and application environment , high selectivity, fast adsorption effect

Inactive Publication Date: 2014-03-05
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, currently studied molecularly imprinted polymers are mainly studied in organic systems, while studies in aqueous phases are very limited.
The main difficulty is that

Method used

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  • Automatic-assembling method for preparing molecular imprint polyaniline nanocomposite

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Experimental program
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Effect test

Embodiment 1

[0017] Weigh 0.72g of acrylic acid (AA), 1.12g of N-vinylpyrrolidone (VP), 2.08g of styrene (St), 0.0392g of azobisisobutyronitrile (AIBN) in a 50mL round bottom flask, Add 30 mL of dioxane, react in an 80°C oil bath for 24h, precipitate with petroleum ether, and dry in an oven at 40°C. Weigh 0.2g of polymer P(AA-co-VP-co-St) and dissolve it in 10mL of N,N-dimethylformamide, and add template molecules, the amount of template molecules added is the mass of random polymer Stir to fully dissolve the template molecules and complex with the random polymer; slowly add ultra-pure water, a poor solvent for the amphiphilic polymer, under stirring until the volume of the solution is approximately 1.5 times the initial volume, so that the random polymer Micro-phase separation, self-assembly and coating template molecules to form imprinted polymer micelles solution, continue to stir at a constant speed for 3 hours, so that the non-returning polymers are completely assembled; add the impri...

Embodiment 2

[0019] Weigh 0.1.44g of acrylic acid (AA), 1.12g of N-vinylpyrrolidone (VP), 2.08g of styrene (St), 0.0462g of azobisisobutyronitrile (AIBN) in a 50mL round bottom flask , add 30mL of dioxane, react in an 80°C oil bath for 24h, precipitate with petroleum ether, and dry in an oven at 40°C. Weigh 0.2g of polymer P(AA-co-VP-co-St) and dissolve it in 10mL of N,N-dimethylformamide, and add template molecules, the amount of template molecules added is the mass of random polymer Stir to fully dissolve the template molecules and complex with the random polymer; slowly add ultra-pure water, a poor solvent for the amphiphilic polymer, under stirring until the volume of the solution is roughly twice the initial volume, so that the random polymer Micro-phase separation, self-assembly and coating template molecules to form imprinted polymer micelles solution, continue to stir at a constant speed for 3 hours, so that the non-returning polymers are completely assembled; add the imprinted pol...

Embodiment 3

[0021] Weigh 2.16g of acrylic acid (AA), 1.12g of N-vinylpyrrolidone (VP), 2.08g of styrene (St), 0.0536g of azobisisobutyronitrile (AIBN) in a 50mL round bottom flask, Add 30 mL of dioxane, react in an 80°C oil bath for 24h, precipitate with petroleum ether, and dry in an oven at 40°C. Weigh 0.2g of polymer P(AA-co-VP-co-St) and dissolve it in 10mL of N,N-dimethylformamide, and add template molecules, the amount of template molecules added is the mass of random polymer Stir to fully dissolve the template molecules and complex with the random polymer; slowly add ultra-pure water, a poor solvent for the amphiphilic polymer, under stirring until the volume of the solution is approximately 3 times the initial volume, so that the random polymer Micro-phase separation, self-assembly and coating template molecules to form imprinted polymer micelles solution, continue to stir at a constant speed for 3 hours, so that the non-returning polymers are completely assembled; add the imprint...

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Abstract

The invention provides an automatic-assembling method for preparing a molecular imprint polyaniline nanocomposite, and relates to the technical field of high molecular material science. The preparation method comprises the followings steps: firstly, synthesizing a random amphiphilic copolymer through free radical polymerization; preparing micelle of polymer by adopting an automatic-assembling method; synthesizing the molecular imprint polyaniline nanocomposite through in-situ polymerization by taking a safety hazard factor in food as a template molecule, wherein the molecular imprint polyaniline nanocomposite is applied to food as an absorbent for the safety hazard factor. According to the invention, electric conductive polyaniline, the nano technique and the molecular imprint technique are combined, and the preparation method is simple, is controllable in condition, and is low in cost; the prepared molecular imprint polyaniline nanocomposite has the advantages of specific recognition capability on the template molecule, high selectivity, high adsorption speed, capability of being used repeatedly, environment friendliness and the like.

Description

Technical field: [0001] The invention provides a self-assembly method for preparing molecularly imprinted polyaniline nanocomposites, and relates to the technical field of polymer material science. Background technique: [0002] Molecularly imprinted polymers have cavities whose shapes match those of substrate molecules, and functional groups with specific arrangements that can recognize substrate molecules. Compared with conventional and conventional separation and analysis media, the outstanding feature of molecularly imprinted polymers based on molecular recognition is their high selectivity for the separated substance or analyte. Most of the molecular recognition sites on the imprinted polymers prepared by traditional methods are embedded in polymers with high cross-linking density, which leads to molecularly imprinted materials with high molecular recognition selectivity, but with template molecular washing. However, it has disadvantages such as difficult detachment, l...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08F212/08C08F226/10C08F220/06C08J3/02C08J9/26B01J20/26B01J20/30
Inventor 罗静孙军李荣耀周乃鹏刘晓亚
Owner JIANGNAN UNIV
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