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Preparation method of self-supporting molecularly imprinted polymer film

A molecular imprinting, polymer membrane technology, applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problems of inability to material self-support, complex process, and insufficient bonding , to achieve the effect of easy to enlarge the application, improve the elution efficiency, and shorten the diffusion distance

Active Publication Date: 2012-05-02
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in molecularly imprinted membranes of this structure, the base membrane is often a flexible organic membrane material, which cannot be self-supporting for the material.
At the same time, the binding force between the molecularly imprinted cortex and the basement membrane is either a weak van der Waals force, the combination of the two is not strong enough, or a covalent bond obtained through chemical redox or irradiation grafting, and the process is more complicated.

Method used

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  • Preparation method of self-supporting molecularly imprinted polymer film
  • Preparation method of self-supporting molecularly imprinted polymer film
  • Preparation method of self-supporting molecularly imprinted polymer film

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment one: Specific steps are as follows:

[0027] in Ni 2+ (Ni(NO 3 ) 2 ) and hexamethylenetetramine concentration of 0.0125 mol / liter mixed aqueous solution, add porous aluminum oxide (AAO) film with 0.4 times the total molar amount of divalent metal ions, and react at 90°C for 1.5 hours to get the product Wash and dry to obtain porous alumina-based double hydroxide (AAO-LDH); in the NaOH aqueous solution of SBC with a molar concentration of 0.012 mol / L and a pH value of 8.0~9.0, add 1 times the total molar amount of SBC The porous alumina-based layered double hydroxide was reacted at 60°C for 1 hour, and the product was washed with water and dried at 60°C to obtain SBC-intercalated porous alumina-based layered double hydroxide (SBC-LDH); Then 0.5g of methacrylic acid, 0.09g of SBC intercalated porous alumina layered double hydroxide, 5.9g of ethylene glycol dimethacrylate, 0.09g of theophylline and 10g of chloroform were mixed and dispersed by ultrasonic wa...

Embodiment 2

[0029] in Ni 2+ (Ni(NO 3 ) 2 ) and hexamethylenetetramine concentrations of 0.02 mol / liter mixed aqueous solution, add a porous aluminum oxide (AAO) film with 0.3 times the total molar amount of divalent metal ions, and react at 20°C for 72 hours. Wash and dry to obtain porous alumina-based double hydroxide (AAO-LDH); in the NaOH aqueous solution of SBC with a molar concentration of 0.02 mol / L and a pH value of 7.0~8.0, add 0.2 times the total molar amount of SBC The porous alumina-based double hydroxide was reacted at 10°C for 24 hours, and the product was washed with water and dried at 30°C to obtain SBC-intercalated porous alumina-based double hydroxide (SBC-LDH); Then 0.5g of methacrylic acid, 0.03g of SBC-intercalated porous alumina-layered double hydroxide, 3.9g of divinylbenzene, 0.07g of glucose and 6g of tetrahydrofuran were mixed and dispersed by ultrasonic waves, and the oxygen was removed by sealing nitrogen; Then 0.038 g of azobisisoheptanonitrile was dispersed...

Embodiment 3

[0031] in Zn 2+ (Zn(NO 3 ) 2 ) and hexamethylenetetramine concentrations of 0.015 mol / liter mixed aqueous solution, add a porous aluminum oxide (AAO) film with 0.2 times the total molar amount of divalent metal ions, and react at 80°C for 5 hours to produce the product Washing and drying to obtain porous alumina-based double hydroxide (AAO-LDH); in the NaOH aqueous solution of SBC with a molar concentration of 0.03 mol / L and a pH value of 9.0~10.0, add 0.5 times the total molar amount of SBC The porous alumina-based layered double hydroxide was reacted at 30°C for 12 hours, and the product was washed with water and dried at 50°C to obtain SBC-intercalated porous alumina-based layered double hydroxide (SBC-LDH); Then 0.5 g of 4-vinylbenzoic acid, 0.05 g of SBC-intercalated porous alumina layered double hydroxide, 3.4 g of ethylene glycol dimethacrylate, 0.06 g of polyacetylglucosamine and 3.8 g of dimethyl Base sulfoxide was mixed and dispersed by ultrasonic waves, and nitro...

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Abstract

The invention relates to a preparation method of a self-supporting molecularly imprinted polymer film. The preparation method comprises the following steps of: firstly, reacting divalent metal ions with a porous alumina film to obtain a porous alumina-based layered double hydroxide; secondly, carrying out further reaction to obtain an SBC (Sulpho-Benzoyl Cyanoacetic Acid) intercalated porous alumina-based layered double hydroxide; and finally, mixing the SBC intercalated porous alumina-based layered double hydroxide with a polymerizable monomer, a polymerized cross-linking agent, a molecularly imprinted template agent and an organic solvent, dispersing by using ultrasound wave, adding a free base polymerization initiator for polymerizing, washing a product obtained by reacting and then drying to obtain the self-supporting molecularly imprinted polymer film. According to the self-supporting molecularly imprinted polymer film disclosed by the invention, the advantages of high strength, corrosion resistance, high temperature resistance and great specific area of an inorganic material as well as high load information quantity and adjustable performance of an organic polymer material can be fully exerted; the active free base polymerization is assisted in controlling; and the controllable synthesis of an ultrathin nano self-supporting structure of a molecularly imprinted material can be realized by using the controllability of the growth process of an active chain.

Description

technical field [0001] The invention belongs to the technical field of polymer-inorganic nanocomposite materials, in particular to a preparation method of a self-supporting molecular imprinted polymer film. Background technique [0002] Molecular recognition is the basis for the existence of living organisms. Molecular imprinting technology simulates the specific and selective recognition ability of natural cells and molecules. Molecular imprinting technology mostly adopts thermal or photoinitiated free radical polymerization to prepare molecularly imprinted polymers. Although the synthesis conditions of this method are easy to control and the experimental equipment is simple, the resulting imprinted polymer particles are large, uneven in shape, and in the process of grinding. It is easy to damage the polymer network and other shortcomings, resulting in low imprinting efficiency. Molecularly imprinted membrane is a new type of artificially synthesized membrane material that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/06C08F222/14C08F212/36C08J9/26C08J5/18B01J20/26B01J20/28B01J20/30
Inventor 丁鹏施利毅李宗周宋娜
Owner SHANGHAI UNIV
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