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Hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent as well as preparation method and application thereof

A technology of polyglycidyl ether and glycidyl ether, which is applied in chemical instruments and methods, ion exchange, selective adsorption, etc., can solve the problems of poor hydrophilicity, limited number of functional groups, and low adsorption capacity of cochineal to achieve high-efficiency adsorption Effect

Active Publication Date: 2020-12-22
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor hydrophilicity and limited number of functional groups of the previous solid-phase extraction adsorbents, the adsorption capacity of cochineal is low, which affects the accurate detection of cochineal in food.

Method used

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  • Hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent as well as preparation method and application thereof
  • Hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent as well as preparation method and application thereof
  • Hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A preparation method of hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent, comprising the following steps:

[0028] Step 1. Put 2.0g of ferric chloride, 4.0g of anhydrous sodium acetate and 35mL of ethylene glycol in a reaction kettle, and react at 160°C for 8h. Under the condition of vacuum drying for 6h, the magnetic nanospheres were prepared. Such as figure 1 As shown, the particle size of the prepared magnetic nanosphere is about 350nm.

[0029] Step 2. Put 50mg of magnetic nanospheres, 25μL of potassium methoxide and 1mL of anhydrous tetrahydrofuran into a 100mL three-neck flask, under nitrogen protection, stir at 30°C for 1h, raise the temperature to 80°C, and shrink 1.5mL by a peristaltic pump device. The glycerol ether monomer was slowly added dropwise into the three-necked flask, and the dropping time was 10 hours. After the addition of the monomer was completed, the product was separated by an external magnetic field, washed, and dried i...

Embodiment 2

[0039] A preparation method of hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent, comprising the following steps:

[0040]Step 1. Put 3.0g of ferric chloride, 5.0g of anhydrous sodium acetate and 40mL of ethylene glycol in a reaction kettle, and react at 200°C for 10h. Under the condition of vacuum drying for 8h, the magnetic nanospheres were obtained;

[0041] Step 2. Put 100mg of magnetic nanospheres, 28μL of potassium methoxide and 2.0mL of anhydrous tetrahydrofuran into a 100mL three-neck flask, under nitrogen protection, stir at 50°C for 2h, raise the temperature to 95°C, and pump 2.0mL of The glycidyl ether monomer was slowly added dropwise into the three-necked flask for 12 hours. After the addition of the monomer is completed, the product is separated by an external magnetic field, washed, and vacuum-dried at 30°C and 0.02MPa for 8 hours to prepare a hydrophilic hyperbranched polyglycidyl ether anionic magnetic adsorbent;

[0042] The hydrophilic ...

Embodiment 3

[0051] A preparation method of hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent, comprising the following steps:

[0052] Step 1. Put 5.0g of ferric chloride, 6.0g of anhydrous sodium acetate and 55mL of ethylene glycol in a reaction kettle, and react at 230°C for 12h. Under the condition of vacuum drying for 9 hours, the magnetic nanospheres were obtained;

[0053] Step 2: Put 150 mg of magnetic nanospheres, 30 μL of potassium methoxide and 3.0 mL of anhydrous tetrahydrofuran into a 100 mL three-necked flask, and stir at 53°C for 3 hours under nitrogen protection, raise the temperature to 100°C, and pump 3.0mL of The glycidyl ether monomer was slowly added dropwise into the three-necked flask for 15 hours. After the addition of the monomer is completed, the product is separated by an external magnetic field, washed, and vacuum-dried at 40°C and 0.04MPa for 9 hours to prepare a hydrophilic hyperbranched polyglycidyl ether anionic magnetic adsorbent;

[0...

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Abstract

The invention discloses a hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent as well as a preparation method and application thereof, and belongs to the technical field of nano material preparation and food analysis application. The preparation method comprises the following steps: synthesizing magnetic nanoparticles Fe3O4 by adopting a solvothermal method; then synthesizing a solid polymer by taking the magnetic nanoparticles Fe3O4 as a carrier, polyglycidyl ether as a functional monomer and potassium methoxide and anhydrous tetrahydrofuran as solvents through anion ring-opening polymerization reaction; and finally, separating the solid polymer through an external magnetic field, and washing and drying the separated solid polymer to obtain the hydrophilic hyperbranchedpolyglycidyl ether anion magnetic adsorbent. The prepared hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent is uniform in particle size, good in structural stability, strong in magnetic response, good in reusability, high in cochineal adsorption capacity, high in recovery rate, low in material cost and simple to prepare.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation and food analysis application, and relates to a hydrophilic hyperbranched polyglycidyl ether anion magnetic adsorbent and a preparation method and application thereof. Background technique [0002] Carmine (also known as carminic acid, carminic acid) is an anthraquinone natural pigment extracted from cochineal insects growing on cactus, which is only one word different from the synthetic pigment carmine. Carmine is the most widely used and large amount of monoazo artificial synthetic pigment in the world. It can be metabolized in the body to generate aromatic amine compounds, which can induce mutations by combining with DNA and RNA, and have certain carcinogenicity. The natural pigment cochineal is often used as an excellent colorant for food, cosmetics, medicine and textiles because of its stability, safety, and non-carcinogenic and teratogenic characteristics. However, the addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D15/08
CPCB01J20/262B01J20/06B01J20/28009B01D15/08
Inventor 吕东梅王悦贺一晋赵文昌高瑞霞王泽华凯迪日耶·色提瓦力迪翟欣茹
Owner XI AN JIAOTONG UNIV
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