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Green preparation method of hydrophilic molecular engram polymer

A technology of molecular imprinting and polymers, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor digestion and absorption of tetracycline, unsafe residues, etc., and achieve the effect of harmless price

Inactive Publication Date: 2013-09-18
JIANGSU UNIV
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  • Abstract
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Problems solved by technology

However, tetracycline is poorly digested and absorbed in the body, so most of it does not participate in metabolism and is excreted from the body. Animal excrement still maintains biological activity, transfers and spreads in microorganisms, and produces toxic effects
Because tetracycline has spectrum antibacterial properties and is cheap, the abuse of tetracycline has led to unsafe residues in meat agricultural products and the ecological environment

Method used

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  • Green preparation method of hydrophilic molecular engram polymer
  • Green preparation method of hydrophilic molecular engram polymer
  • Green preparation method of hydrophilic molecular engram polymer

Examples

Experimental program
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Effect test

experiment example 2

[0033] Experimental example 2: Add 10 ml of tetracycline solution with an initial concentration of 100 μmol / L into a centrifuge tube, add 5.0 mg of imprinted polymer and non-imprinted polymer respectively, and place the test solution at 25 o Stand in the water bath of C for 10, 30, 60, 90, 120, 150, 180, 240, 300 and 360 minutes respectively. After standing still, the supernatant was collected by centrifugation, and the concentration of unadsorbed tetracycline molecules was measured with an ultraviolet-visible spectrophotometer, and the adsorption capacity was calculated according to the results. Figure 7 The results showed that the imprinted polymer imprinted and non-imprinted adsorbents had good adsorption kinetics for sulfamethazine, and the adsorption equilibrium was basically reached within 2.0 h.

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Abstract

The invention a green preparation method of a hydrophilic molecular engram polymer, and belongs to the technical field of environment function materials. A hydrophilic molecular engram polymer microsphere is prepared through a one-pot method by taking nontoxic innocuous ethanol as a green solvent, tetracycline as a template molecule, methacrylic acid and acrylamide as a difunctional monomer, N,N'-methylene bisacrylamide as a cross-linking agent and azoisobutyronitrile as a free-radical initiator. According to the invention, higher acting force is proved to exist between the template molecule and the polymerized monomer and influence parameters, namely morphology, size distribution, and the like, of a polymer through multiple representation means; and the adsorption equilibrium, dynamic and selective property of a prepared engram polymer particle on the tetracycline are researched by utilizing a static adsorption experiment, and a result indicates that the hydrophilic molecular engram polymer obtained by utilizing the green preparation method disclosed by the invention has higher adsorption capacity, fast adsorption kinetics property and specific recognition property on tetracycline antibiotics in a water solution.

Description

technical field [0001] The invention relates to a green preparation method of a hydrophilic molecularly imprinted polymer, which belongs to the technical field of preparation of environmental functional materials. Background technique [0002] Molecularly imprinted polymers are polymers synthesized by molecular imprinting technology that can specifically recognize and selectively adsorb specific target molecules (template molecules) and their structural analogs. The emergence of molecularly imprinted adsorbents has promoted the rapid development of separation technology. Molecular imprinting technology is a new technology for preparing polymers with molecular recognition ability. The main steps are: (1) functional monomers and template molecules form complexes through covalent or non-covalent bonds under certain conditions; (2) The cross-linking agent and the functional monomer are cross-linked and polymerized to form a three-dimensional cross-linked polymer network; (3) th...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/56C08F222/38C08J9/26B01J20/26B01J20/30
Inventor 戴江栋赵春艳潘建明邹永立周志平闫永胜
Owner JIANGSU UNIV
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