Molecularly imprinted polymer for adsorption of vitamin C and preparation method thereof

A technology of molecular imprinting and vitamins, which is applied in the fields of alkali metal compounds, chemical instruments and methods, and other chemical processes, can solve the problems of long analysis time and complicated processing process, and achieve the goal of simplifying the preparation process, simple process, and improving utilization rate Effect

Active Publication Date: 2020-02-14
重庆东渝中能实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, a variety of methods for the detection of L-AA and D-AA have been reported, but most of them have problems such as complicated processing and long analysis time

Method used

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  • Molecularly imprinted polymer for adsorption of vitamin C and preparation method thereof
  • Molecularly imprinted polymer for adsorption of vitamin C and preparation method thereof
  • Molecularly imprinted polymer for adsorption of vitamin C and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of Molecularly Imprinted Polymers for Adsorbing Vitamin C

[0029] (1) FeCl 2 and FeCl 3 Dissolve in deionized water, raise the temperature to 80°C, add ammonia water dropwise, react for 20 minutes, filter to get the filter residue, wash the filter residue with deionized water and dry at 50°C for 8 hours to obtain Fe 3 o 4 Particles, where FeCl 2 , FeCl 3 The mass volume ratio with ammonia water is 1:3:6, and the unit of mass volume ratio is g:g:mL;

[0030] (2) Fe obtained in step (1) 3 o 4 Add the particles into ethanol aqueous solution (the volume ratio of ethanol to deionized water is 1:1), ultrasonicate for 20 minutes, then add ammonia water and tetraethyl orthosilicate in turn, react at room temperature for 24 hours and filter to obtain silica magnetic nanoparticles ; Among them, Fe 3 o 4 The mass volume ratio of particles, ethanol aqueous solution, ammonia water and tetraethyl orthosilicate is 1:40:5:3, and the unit of mass volume ratio is g:...

Embodiment 2

[0033] Preparation of Molecularly Imprinted Polymers for Adsorbing Vitamin C

[0034] (1) FeCl 2 and FeCl 3 Dissolve in deionized water, raise the temperature to 70°C, add ammonia water dropwise, react for 25 minutes, filter to get the filter residue, wash the filter residue with deionized water and dry at 60°C for 10 hours to obtain Fe 3 o 4 Particles, where FeCl 2 , FeCl 3 The mass volume ratio to ammonia water is 1:2.7:5.8, and the unit of mass volume ratio is g:g:mL;

[0035] (2) Fe obtained in step (1) 3 o 4 Add the particles into ethanol aqueous solution (the volume ratio of ethanol to deionized water is 1:1), ultrasonicate for 20 minutes, then add ammonia water and tetraethyl orthosilicate in turn, react at room temperature for 20 hours and filter to obtain silica magnetic nanoparticles ; Among them, Fe 3 o 4 The mass volume ratio of particles, ethanol aqueous solution, ammonia water and tetraethyl orthosilicate is 1:35:4:2.5, and the unit of mass volume ratio ...

Embodiment 3

[0038] Preparation of Molecularly Imprinted Polymers for Adsorbing Vitamin C

[0039] (1) FeCl 2 and FeCl 3 Dissolve in deionized water, raise the temperature to 75°C and add ammonia water dropwise, react for 30 minutes and filter to get the filter residue, wash the filter residue with deionized water and dry at 70°C for 9 hours to obtain Fe 3 o 4 Particles, where FeCl 2 , FeCl 3 The mass volume ratio with ammonia water is 1:2.8:5.9, and the unit of mass volume ratio is g:g:mL;

[0040] (2) Fe obtained in step (1) 3 o 4 Add the particles into ethanol aqueous solution (the volume ratio of ethanol to deionized water is 1:1), ultrasonicate for 20 minutes, then add ammonia water and tetraethyl orthosilicate in turn, react at room temperature for 22 hours and filter to obtain silica magnetic nanoparticles ; Among them, Fe 3 o 4 The mass volume ratio of particles, ethanol aqueous solution, ammonia water and tetraethyl orthosilicate is 1:37:4.5:3, and the unit of mass volume...

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Abstract

Belonging to the technical field of functional polymer materials, the invention relates to a molecularly imprinted polymer for adsorption of vitamin C and a preparation method thereof. The method adopts silicon dioxide magnetic nanoparticle as the carrier, takes N-n-octyl-D-glucosamine as the functional monomer, employs vitamin C as the template molecule, and uses ethylene glycol dimethacrylate asthe cross-linking agent to prepare the molecularly imprinted polymer which a chiral structure and magnetic properties for adsorption of vitamin C. The polymer can be used for detection, and can overcome the problems of difficult separation, low sensitivity and the like in use of common molecularly imprinted materials for chiral detection. The method has the characteristics of simple process, easyoperation and low cost, and is suitable for expanded production.

Description

technical field [0001] The invention belongs to the technical field of functional polymer materials, and in particular relates to a molecularly imprinted polymer for absorbing vitamin C and a preparation method thereof. Background technique [0002] Molecular imprinting technology is a technique for preparing polymers with specific recognition for specific target molecules. Molecularly imprinted polymers (MIPs) mimic biological receptors and can be used to screen chiral analytes in biological fluids. Chirality is a property of individual molecules that plays an important role in drug design and in the human body. Many bioactive molecules are chiral, including naturally occurring amino acids and sugars. Among them, vitamin C is also an optically active chiral compound, which exists in two forms, D-vitamin C (D-AA) and L-vitamin C (L-AA), both of which have different biological properties. L-AA can be used to treat scurvy and cardiovascular diseases, while D-AA has no activi...

Claims

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Application Information

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IPC IPC(8): C08F292/00C08F222/14B01J20/26B01J20/28
CPCC08F292/00B01J20/268B01J20/28009
Inventor 陈星云孙娜王培勇廖彦剑
Owner 重庆东渝中能实业有限公司
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