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Method for preparing organic-inorganic composite microspheres with eccentric structure

A technology of inorganic composite microspheres and eccentric structure, which can be used in the preparation of microspheres, microcapsule preparations, etc., and can solve the problems of naming and systematic research reports.

Active Publication Date: 2010-10-13
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are photos of this type of structural composite microspheres in the published literature, but there is no naming and systematic research report

Method used

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  • Method for preparing organic-inorganic composite microspheres with eccentric structure
  • Method for preparing organic-inorganic composite microspheres with eccentric structure
  • Method for preparing organic-inorganic composite microspheres with eccentric structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Preparation of Magnetic Organic / Inorganic Composite Microspheres with Eccentric Structure by Miniemulsion Polymerization

[0027] Mix and disperse 5g of ferric oxide and 50g of distilled water, put it into a container equipped with an electric stirrer, a condenser tube and a thermometer, stir and raise the temperature of the system; when the temperature rises to 70°C, add 2g of oleic acid and keep it warm for 40 minutes ; After pouring out the water, use n-heptane as a dispersant to disperse, and prepare a suspension with a magnetic particle content of 10%; take the suspension and centrifuge it, remove the upper layer of n-heptane, and add styrene, Disperbyk- 106 and cetyl alcohol were prepared into an oil phase, wherein the mass-number ratio of suspension: styrene: Disperbyk-106: cetyl alcohol was 2: 20: 0.5: 1, and the oil phase was sonicated for 2 minutes to completely dissolve cetyl alcohol And the system is a macroscopic homogeneous phase; the water phas...

Embodiment 2

[0028] Example 2: Preparation of Magnetic Organic / Inorganic Composite Microspheres with Eccentric Structure by Miniemulsion Polymerization

[0029] Mix and disperse 5g of ferric oxide and 50g of distilled water, put it into a container equipped with an electric stirrer, a condenser and a thermometer, stir and raise the temperature of the system; when the temperature rises to 70°C, add 5g of oleic acid and keep it warm for 40 minutes ; After pouring out the water, use cyclohexane as a dispersant to disperse, and prepare a suspension with a magnetic particle content of 10%; after the suspension is centrifuged, remove the upper layer of cyclohexane, and add styrene, Disperbyk- 106 and cetyl alcohol were prepared into an oil phase, wherein the mass-number ratio of the suspension: styrene: Disperbyk-106: cetyl alcohol was 6: 20: 0.5: 0.5, and the oil phase was ultrasonicated for 5 minutes to completely dissolve the cetyl alcohol And the system is a macroscopic homogeneous phase; th...

Embodiment 3

[0030] Example 3: Preparation of Magnetic Organic / Inorganic Composite Microspheres with Eccentric Structure by Miniemulsion Polymerization

[0031] Mix and disperse 5g of ferric oxide and 50g of distilled water, put it into a container equipped with an electric stirrer, a condenser and a thermometer to stir and raise the temperature of the system; when the temperature rises to 80°C, add 4g of oleic acid and keep it warm for 30 minutes ; After pouring out the water, use cyclohexane as a dispersant to disperse, and prepare a suspension with a magnetic particle content of 10%; after the suspension is centrifuged, remove the upper layer of cyclohexane, and add styrene, Disperbyk- 106 and cetyl alcohol were prepared into an oil phase, wherein the suspension: styrene: Disperbyk-106: cetyl alcohol mass ratio was 10: 20: 1: 0.5, and the oil phase was ultrasonicated for 8 minutes to completely dissolve the cetyl alcohol And the system is a macroscopically homogeneous phase; the water p...

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Abstract

The invention relates to a method for preparing organic-inorganic composite microspheres with eccentric structures, which is characterized by comprising the following steps of: performing surface modification on inorganic particles; adding a hyperdispersant, an assistant emulsifier, and a styrene monomer into the modified inorganic particles to prepare an oleic phase; and then mixing the oleic phase and an aqueous phase prepared from a surfactant and distilled water to pre-emulsify, stirring the mixture, raising the temperature and performing centrifugal separation on the mixture to obtain the organic-inorganic composite microspheres with the eccentric structures. In the method for preparing the organic-inorganic composite microspheres with the eccentric structures, the inorganic particles are subjected to surface modification, and then the composite microspheres in which the inorganic particles are distributed asymmetrically in the organic microspheres are prepared by a miniemulsion polymerization method. The organic-inorganic composite microspheres with complex eccentric structures are prepared by the simple and convenient miniemulsion polymerization method; and the grain size of the microspheres is 300 to 900 nm, and the solid content is 8 to 40 percent.

Description

technical field [0001] The invention relates to a preparation method of an organic / inorganic composite microsphere with an eccentric structure. Background technique [0002] Organic / inorganic composite microspheres with eccentric structure are a kind of organic / inorganic composite particles, which are formed by asymmetric distribution of inorganic particles such as ferric oxide, silicon dioxide, titanium dioxide, etc. An organic / inorganic composite microsphere. Due to the particularity of the structure, theoretically, it provides the possibility to construct a new chemical model, that is, a chemical model based on nanometer or submicron particles; at the same time, it also provides a basis for the development of nanochemistry, especially nanomaterials. A new direction has been opened up in the preparation, functionalization and structure-activity studies of . In terms of application, this particle has shown attractive application prospects in molecular recognition and self...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08K9/04C08K3/22C08K3/36C08K3/30C08F112/08C08F2/44C08F2/24B01J13/18
Inventor 张和鹏张秋禹张宝亮耿旺昌许海龙
Owner NORTHWESTERN POLYTECHNICAL UNIV
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