Polymer ferric oxide microsphere preparation method

A polymer, iron oxide technology, applied in the direction of magnetism and coating of organic materials/organic magnetic materials, can solve the problem of difficult to control the particle size and magnetic content of microspheres, and achieve controllable size, uniform particle size, magnetic high content effect

Inactive Publication Date: 2013-04-03
SUZHOU KNOWLEDGE & BENEFIT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, one of the objects of the present invention is to overcome the defects of the existing magnetic microspheres that are difficult to control the particle size and magnetic content of the microspheres during the preparation process, thereby providing a polymer iron oxide microsphere Preparation

Method used

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Examples

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Embodiment Construction

[0020] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the specific conditions, and the unspecified implementation conditions are generally the conditions in routine experiments. The specific implementation process of the present invention is illustrated below through the examples.

[0021] The synthetic embodiment of porous polymerization microsphere in step (1):

[0022] 1. Synthesis of porous polystyrene / divinylbenzene microspheres

[0023] Add the organic phase composed of 80g styrene, 10g divinylbenzene, 20g xylene and 2g benzoyl peroxide into the oil phase storage tank, and stir to form a uniform oil phase fluid; add 1000ml Distilled water, 10g of polyvinyl alcohol and 10g of polyvinylpyrrolidon...

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Abstract

The invention discloses a polymer ferric oxide microsphere preparation method. The method includes the steps: (1) preparing porous polymer microspheres; (2) using the coprecipitation method for synthesizing ferric oxide nano particles in the polymer microspheres obtained at the step (1) to obtain polymer / ferric oxide composite microspheres; and (3) coating silicon dioxide on the surfaces of the composite ferric oxide microspheres obtained at the step (2) to obtain magnetic microspheres. The particle size of the magnetic microspheres made by the method is controllable in the range of 300 nanometers to 100 micrometers, and the microspheres are uniform in particle size, controllable in size and stable in chemical property and have potential application value in nucleic acid separation, protein separation, immobilized enzyme, cell separation and antibody purification.

Description

Technical field: [0001] The invention relates to the field of polymer materials, in particular to a preparation method of polymer iron oxide microspheres. Background technique: [0002] In recent years, iron oxide-based magnetic microspheres have attractive application prospects in cell separation, immobilized enzymes, immunoassays, targeted drugs, protein separation and purification, and are one of the hot topics of current research. [0003] The methods for synthesizing magnetic microspheres in the prior art mainly include embedding method and monomer polymerization method. [0004] U.S. Patent (US4,339,337 and US4,358,388) discloses suspension polymerization method and microsuspension polymerization method, namely the magnetic iron tetroxide particles of lipophilic treatment, lipophilic ethylenic monomer and oil-soluble initiator The composed oil phase is dispersed in the water phase, and under the action of mechanical stirring and stabilizer, the oil phase is dispersed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/06C08J3/12C08L25/06C08L25/08C08L33/12C08L33/08C08L33/14C08K3/22H01F1/42
Inventor 阳承利李雪庄洁夏丽玲黄功卿
Owner SUZHOU KNOWLEDGE & BENEFIT TECH CO LTD
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