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Functional monomer for preparing heavy metal ion imprinted polymer and preparation method

A technology for imprinting polymers and heavy metal ions, applied in chemical instruments and methods, nickel organic compounds, zinc organic compounds, etc., can solve the problems of single functional monomers, inability to meet the requirements of template recognition, and few functional monomers

Inactive Publication Date: 2013-07-24
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of them is that there are too few types of functional monomers currently available, and the functions of functional monomers are single, so that they cannot meet the requirements of certain template recognition, or cannot meet the needs of practical applications; in addition, most imprinted polymers can only be used in Polymerization and application are carried out in organic phase, while natural template recognition systems are mostly carried out in aqueous solution, how to carry out template imprinting and recognition in aqueous solution or polar solvent is still a big problem

Method used

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  • Functional monomer for preparing heavy metal ion imprinted polymer and preparation method
  • Functional monomer for preparing heavy metal ion imprinted polymer and preparation method
  • Functional monomer for preparing heavy metal ion imprinted polymer and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 functional monomer MI A - Preparation of 1-Cu-1

[0046] Step 1, MI A - Preparation of 1-CS

[0047]

[0048] Take by weighing -2-(dimethylamino) ethyl methacrylate (DMA) 78 grams and 5-chloromethyl salicylaldehyde (5-CS) 80 grams and dissolve in 100 grams of ethyl acetate respectively, make described The ethyl acetate solution of -2-(dimethylamino)ethyl methacrylate and the ethyl acetate solution of 5-chloromethyl salicylaldehyde, at room temperature, the ethyl acetate solution of 5-chloromethyl salicylaldehyde The solution was added into the ethyl acetate solution of 2-(dimethylamino)ethyl methacrylate, and after stirring and reacting for 4 hours, the temperature was raised to 60-65° C. and the stirring reaction was continued for 6 hours. The reaction system was left to cool naturally to room temperature, filtered to obtain a light white crystalline substance, recrystallized, and dried to obtain 151 grams of MI A -1-CS, the yield is 95.6%, and the ...

Embodiment 2

[0058] Example 2 MI A Preparation of -1-Cr-1

[0059]

[0060] According to the method and operation steps of Example 1, the copper chloride in Step 3 of Example 1 was replaced with chromium chloride, and acrylohydrazide was replaced with 4-vinylpyridine and acrylic acid to obtain gray-green MI A -1-Cr-1.

Embodiment 3

[0061] Example 3 MI A - Preparation of 2-Zn-1

[0062]

[0063] According to the method and operation steps of Example 1, the 2-(dimethylamino)ethyl methacrylate (DMA) in Step 1 of Example 1 was replaced with 2-(diethylamino)ethyl methacrylate (DEA) , the step copper trichloride is changed to zinc chloride, and acrylohydrazide is changed to 4-vinylpyridine to obtain red MI A -2-Zn-1.

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Abstract

The invention provides a functional monomer for preparing a heavy metal ion imprinted polymer, which is a monomer with a molecular structure containing three functional units of quaternary ammonium salt, Schiff base complex and polymerizable double bond, can perform a self-polymerization reaction, also can perform a copolymerization reaction with styrene, acrylic ester, acrylonitrile, vinyl acetate or acrylamide, and is used for preparing an ion imprinted polymer material with a function of identifying, detecting and separating heavy metal ions.

Description

technical field [0001] The invention relates to a functional monomer, in particular to a functional monomer containing quaternary ammonium salt and complex units in its molecular structure, which is used to prepare ion-imprinted polymers with the functions of identifying, detecting and separating heavy metal ions, and belongs to functional polymer materials field. technical background [0002] Molecularly imprinted polymers refer to the use of a specific target molecule as a template to combine structurally complementary functional monomers with the template through interactions (coordination bonds, hydrogen bonds, van der Waals forces, electrostatic interactions, hydrophobic interactions, etc.) , adding a cross-linking agent for polymerization reaction, after the reaction is completed, the template is eluted to form a rigid polymer material with a fixed hole size and shape, which can recognize the adsorption template with high selectivity. Molecularly imprinted polymers ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08C07F11/00C07F3/06C07F15/04
Inventor 马娟娟朱彩艳李金鹏关云来张田林
Owner HUAIHAI INST OF TECH
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