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Magnetic polymer composite particle as well as preparation method and application thereof

A technology of composite particles and polymers, applied in the field of composite materials, can solve the problems of natural mineral quality, particle size, pore size difference, soil effectiveness reduction, insufficient mechanical strength, etc., and achieve good superparamagnetism and thermal stability , short synthesis cycle, uniform particle size distribution

Pending Publication Date: 2022-01-11
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Immobilized carriers of soil and natural mineral types have a wide range of sources and low cost, but the effectiveness of soil for long-term use will decrease; the quality, particle size, and pore size of natural minerals vary greatly, and there are also significant differences in adsorption effects; although industrial by-products have achieved It has the advantage of reusing waste resources, but the mechanical strength of this type of carrier is usually not enough, and it is frequently replaced in the actual application process

Method used

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  • Magnetic polymer composite particle as well as preparation method and application thereof
  • Magnetic polymer composite particle as well as preparation method and application thereof
  • Magnetic polymer composite particle as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Add 4.5 g of ferrous chloride tetrahydrate and 12 g of ferric chloride hexahydrate into a reactor filled with 75 mL of pure water, stir mechanically at 55°C until the iron salt is completely dissolved, and add 5 mol / L of hydroxide Sodium solution to pH = 9, heat preservation reaction for 1h, to obtain a mixed solution of iron salt;

[0045] (2) Drop 5 g of oleic acid into the iron salt mixed solution described in step (1), heat up to 75° C., and keep warm for 1 h;

[0046] (3) Add 75 mL of ethanol and 4 g of sodium lauryl sulfate directly to the system obtained in step (2), keep stirring for 1 h, add 2 g of potassium persulfate into the system, and then add 20 mL of styrene and divinyl sulfate dropwise to the system. Benzene 4mL mixed solution, after the dropwise addition, keep stirring for 2h;

[0047] (4) Filter the system obtained in step (3) to obtain solid matter, wash twice with 75% ethanol, and vacuum-dry to constant weight to obtain magnetic polymer composi...

Embodiment 2

[0049] (1) Add 5 g of ferrous chloride tetrahydrate and 12 g of ferric chloride hexahydrate into a reactor filled with 75 mL of pure water, mechanically stir at 45 °C until the iron salt is completely dissolved, and add 5 mol / L of sodium hydroxide dropwise Solution to pH = 9, heat preservation reaction 1.5h, to obtain iron salt mixed solution;

[0050] (2) Add 10 g of oleic acid dropwise to the iron salt mixed solution described in step (1), heat up to 75° C., and keep warm for 30 minutes;

[0051] (3) Add 75 mL of ethanol and 4 g of sodium lauryl sulfate directly to the system obtained in step (2), heat and stir for 30 min, add 2.2 g of azobisisoheptanonitrile to the system, and then add benzene dropwise to the system A mixed solution of ethylene 16mL, glycidyl methacrylate 4mL and divinylbenzene 3mL, after the dropwise addition, keep stirring for 1h;

[0052] (4) Filter the system obtained in step (3) to obtain solid matter, wash twice with 75% ethanol, and vacuum-dry to co...

Embodiment 3

[0054] (1) Add 6g of ferrous chloride tetrahydrate and 12g of ferric chloride hexahydrate into a reactor filled with 75mL of pure water, stir mechanically at 65°C until the iron salt is completely dissolved, and add 5mol / L sodium hydroxide dropwise Solution to pH = 9, heat preservation reaction for 2 hours, to obtain a mixed solution of iron salt;

[0055] (2) Drop 6 g of oleic acid into the iron salt mixed solution described in step (1), heat up to 65° C., and keep warm for 1 h;

[0056] (3) Add 75 mL of ethanol and 4.5 g of sodium dodecylsulfonate directly to the system obtained in step (2), keep stirring for 1 hour, add 1.8 g of azobisisobutyronitrile into the system, and then dropwise add A mixed solution of styrene 16mL, methacryloyloxyethyltrimethylammonium chloride 6mL and divinylbenzene 2mL, after the dropwise addition, keep stirring for 4h;

[0057] (4) Filter the system obtained in step (3) to obtain solid matter, wash twice with 75% ethanol, and vacuum-dry to const...

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Abstract

The invention discloses a magnetic polymer composite particle as well as a preparation method and application thereof, and relates to the technical field of composite materials. According to the technical scheme, the preparation method of the magnetic polymer composite particle is provided, and compared with the prior art, the method has the advantages that the method is environment-friendly, the production process is simple, and the magnetic polymer composite particles can be prepared by a one-pot method. The invention also provides a magnetic polymer composite particle. The particle size of the magnetic polymer composite particle is 50-250 [mu] m, and the magnetic polymer composite particle is formed by aggregating a plurality of small particles with the diameter of 1-10 [mu]m and has a macroporous structure. The invention also provides an application of the magnetic polymer composite particle. The magnetic polymer composite particle can be used as a carrier for microbial immobilization.

Description

technical field [0001] The invention relates to the field of composite materials, more specifically, it relates to a magnetic polymer composite microparticle and its preparation method and application. Background technique [0002] Magnetic polymer composite materials are composites of organic polymer materials and inorganic magnetic substances through physical or chemical methods to obtain new materials that have both the properties of polymer materials and magnetic properties. Magnetic polymer particles are a kind of magnetic polymer composite materials, which have great application potential and have been widely concerned and researched by scholars at home and abroad in recent years. [0003] A literature search of the prior art found that the patent document with the notification number CN 104059204B discloses a surface cationic magnetic polymer microsphere, by first embedding magnetic metal oxide nanoparticles into micron-scale cross-linked polystyrene In the microsphe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02C08F212/08C08F212/36C08F220/32C08F220/06
CPCB01J13/02C08F212/08C08F212/36C08F220/325C08F220/06Y02W10/10
Inventor 冯权陈颖师晓爽郭荣波
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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