Method for preparing ferroferric oxide-macromolecule magnetic composite microspheres

A technology of ferroferric oxide and polymer magnetism, which is applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of polymer magnetic composite microspheres with low magnetic content and pure polymer microspheres, and achieve the effect of simple process

Inactive Publication Date: 2014-10-01
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a preparation method of polymer magnetic composite microspheres composed of iron ferric oxide particles and styrene-butyl acrylate copolymer, which solves the problem of preparing polymer magnetic composite microspheres by other monomer polymerization methods. Problems with low levels and high amounts of pure polymer microspheres that do not contain Fe3O4 particles in the polymer product

Method used

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  • Method for preparing ferroferric oxide-macromolecule magnetic composite microspheres
  • Method for preparing ferroferric oxide-macromolecule magnetic composite microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Put 20 grams of iron ferric oxide particles (German Bayer company product, E8706) into a solution composed of 30 grams of styrene, 5 grams of butyl acrylate, and 1.3 grams of azobisisobutyronitrile, ultrasonic (working frequency 40KHZ) Disperse for 30 minutes to obtain a mixture of ferric oxide particles, monomers and initiators;

[0020] (2) 7.5 grams of alkylphenol polyoxyethylene ether, 7.1 grams of polyoxyethylene sorbitan monooleate, and 1.2 grams of sorbitan monooleate form a surfactant mixture;

[0021] (3) 0.1 gram of sodium lauryl sulfate and 17880.6 grams of polyvinyl alcohol are dissolved in 200 milliliters of water to obtain an aqueous solution comprising a surfactant;

[0022] (4) Pour the mixture obtained in step (1) into a 500 ml three-necked bottle, stir, control the rotation speed at 350 rpm, and heat at the same time, control the temperature at 70°C, and react for 50 minutes;

[0023] (5) Pour the surfactant mixture prepared in step (2) into a thr...

Embodiment 2

[0030] (1) 25 grams of iron ferric oxide particles (German Bayer company product, E8706) are dropped into a solution composed of 30 grams of styrene, 7 grams of butyl acrylate, and 1.6 grams of azobisisobutyronitrile, and ultrasonically dispersed (operating frequency 40KHZ ) 30 minutes, obtain the mixture of ferric oxide particle and monomer, initiator;

[0031] (2) Surfactant mixture consisting of 7 grams of alkylphenol polyoxyethylene ether, 7 grams of polyoxyethylene sorbitan monooleate, and 1.1 grams of sorbitan monooleate;

[0032] (3) 0.11 grams of sodium lauryl sulfate and 0.65 grams of polyvinyl alcohol 1788 were dissolved in 220 milliliters of water to obtain an aqueous solution containing a surfactant;

[0033] (4) Pour the mixture obtained in step (1) into a 500 ml three-necked bottle, stir, control the rotation speed at 400 rpm, and heat at the same time, control the temperature at 70°C, and react for 60 minutes;

[0034] (5) Pour the surfactant mixture prepared i...

Embodiment 3

[0039] (1) Put 20 grams of iron ferric oxide particles (German Bayer company product, E8706) into a solution composed of 40 grams of styrene, 8 grams of butyl acrylate, and 1.8 grams of azobisisobutyronitrile, ultrasonic (working frequency 40KHZ) Disperse for 30 minutes to obtain a mixture of ferric oxide particles, monomers and initiators;

[0040] (2) Surfactant mixture consisting of 7.5 grams of alkylphenol polyoxyethylene ether, 8 grams of polyoxyethylene sorbitan monooleate, and 1.5 grams of sorbitan monooleate;

[0041] (3) 0.25 grams of sodium lauryl sulfate and 17880.8 grams of polyvinyl alcohol were dissolved in 250 milliliters of water to obtain an aqueous solution comprising a surfactant;

[0042] (4) Pour the mixture obtained in step (1) into a 500 ml three-neck flask, stir, control the rotation speed at 350 rpm, and heat at the same time, control the temperature at 65°C, and react for 80 minutes;

[0043] (5) Pour the surfactant mixture prepared in step (2) into ...

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Abstract

The invention discloses a method for preparing macromolecule magnetic composite microspheres comprising ferroferric oxide grains and a styrene-butyl acrylate copolymer. The method comprises the steps of firstly, dispersing the ferroferric oxide grains in a monomer phase for prepolymerization, after pre-polymerizing to some extent of reaction, adding emulsifier and mixing uniformly, then adding an aqueous phase solution comprising a surfactant and a dispersing agent while stirring at a high speed and carrying out phase reversal so as to form oil in water emulsion, continuing polymerization reaction, so as to obtain the macromolecule magnetic composite microspheres comprising ferroferric oxide. The magnetic content of the microspheres can be adjusted and controlled in a certain range by changing the proportion of the addition amount of the ferroferric oxide and addition amount of the monomer, the magnetic microspheres with high magnetic content are easy to obtain, and the method is simple and solves the problems that the macromolecule magnetic composite microspheres prepared by other monomer polymerization methods have low magnetic content, and the polymerization product contains a large quantity of pure polymeric microspheres with no ferroferric oxide grains.

Description

technical field [0001] The invention relates to a method for preparing polymer magnetic microspheres, in particular to a method for preparing polymer magnetic composite microspheres composed of nanoscale iron ferric oxide particles and styrene-butyl acrylate copolymer, belonging to the polymer Composite material preparation technology field. Background technique [0002] The polymer magnetic composite microsphere material formed by nanoscale iron ferric oxide particles and polymers has high magnetic responsiveness and can be quickly separated under an external magnetic field, so it has broad application prospects in the field of biomedicine, such as cell separation , drug delivery, cancer therapy, etc. In addition, polymer magnetic composite microsphere materials also have good application prospects in sewage treatment, food testing and other fields. [0003] There are many methods for preparing magnetic polymer composite microspheres, such as monomer polymerization, sol-g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F2/44C08K3/22B01J13/18
Inventor 段玉丰付朝霞李芳芳
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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