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Organic/inorganic hybrid three-component Janus particle and preparation method thereof

A three-component, particle technology, applied in the field of organic/inorganic hybrid three-component Janus particles and preparation, can solve the problems of single size and low yield

Inactive Publication Date: 2020-10-27
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And although above-mentioned preparation method also can be used for the preparation of three-component Janus particle sometimes, there are still raw material requirements strict, productive rate is low, problems such as single size (Macromolecules 2001,34,1069-1075; J.Am.Chem. Soc.2006,128,6796-6797; Adv.Mater.2011,23,79-83)

Method used

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  • Organic/inorganic hybrid three-component Janus particle and preparation method thereof
  • Organic/inorganic hybrid three-component Janus particle and preparation method thereof
  • Organic/inorganic hybrid three-component Janus particle and preparation method thereof

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preparation example Construction

[0051] figure 1 A schematic diagram showing the preparation method of the organic / inorganic hybrid three-component Janus particle of the present invention. The preparation method of the organic / inorganic hybrid three-component Janus particles provided by the invention is to prepare the organic / inorganic hybrid three-component Janus particles by emulsion polymerization. see figure 1 , the method includes the following steps:

[0052] 1) dispersing polymer microspheres in water to obtain seed emulsion;

[0053] 2) Add the silane coupling agent emulsion to the seed emulsion, carry out the polymerization reaction under mechanical stirring, and produce phase separation to obtain the Janus particle emulsion; the silane coupling agent emulsion includes the silane coupling agent monomer and the polymerization initiator ;

[0054] 3) drying the Janus particle emulsion obtained in step 2) by spray drying or freeze-drying to obtain Janus particles separated from organic and inorganic...

Embodiment 1

[0063] Disperse 1 g of cross-linked polystyrene hollow spheres in 23.6 g of deionized water, add 0.0236 g of sodium lauryl sulfate as a surfactant, and stir mechanically to form a uniform seed emulsion.

[0064] 1g silane coupling agent monomer (3-(methacryloyloxy)propyltrimethoxysilane (MPS)), 0.01g polymerization initiator (potassium persulfate (KPS)), 0.02g surfactant (10 Sodium dialkyl sulfate (SDS)) and 10 g of deionized water were mixed into a uniform silane coupling agent emulsion by ultrasonic. The seed emulsion containing the cross-linked styrene hollow spheres was heated to 70° C., and the silane coupling agent emulsion was added to the seed sphere emulsion containing the cross-linked styrene hollow spheres at a speed of 2.5 rpm with a mechanical peristaltic pump. Under continuous mechanical stirring, the whole system was polymerized at 70° C. for 24 hours to obtain a silica / polystyrene Janus particle emulsion.

[0065] The emulsion is dried by a spray-drying method...

Embodiment 2

[0067] Disperse 1 g of cross-linked polystyrene hollow spheres in 23.6 g of deionized water, add 0.0236 g of sodium lauryl sulfate as a surfactant, and stir mechanically to form a uniform seed emulsion.

[0068] With 0.5g silane coupling agent monomer (3-(methacryloxy) propyltrimethoxysilane (MPS)), 0.005g polymerization initiator (potassium persulfate (KPS)), 0.02g surfactant ( Sodium dodecyl sulfate (SDS)) and 10 g of deionized water were mixed into a uniform silane coupling agent emulsion by ultrasonic. The seed emulsion containing the cross-linked styrene hollow spheres was heated to 70° C., and the silane coupling agent emulsion was added to the seed sphere emulsion containing the cross-linked styrene hollow spheres at a speed of 2.5 rpm with a mechanical peristaltic pump. Under continuous mechanical stirring, the whole system was polymerized at 70° C. for 24 hours to obtain a silica / polystyrene Janus particle emulsion.

[0069] The emulsion is dried by a spray-drying me...

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Abstract

The invention discloses an organic / inorganic hybrid ABC three-component Janus particle and a preparation method thereof. The preparation method comprises the following steps: 1) dispersing polymer microspheres in water to obtain a seed emulsion 1; 2) adding a silane coupling agent emulsion into the seed emulsion 1, carrying out a polymerization reaction, generating phase separation to obtain a Janus particle emulsion, and drying to obtain organic and inorganic partially separated Janus particles; 3) dispersing the Janus particles in a solvent, adding a silane coupling agent, reacting to obtaina hydrophobically modified Janus particle emulsion, and drying to obtain hydrophobically modified Janus particles; 4) dispersing the modified Janus particles in water to obtain a seed emulsion 2; and7) adding a silane coupling agent emulsion into the seed emulsion 2, carrying out a polymerization reaction, generating phase separation to obtain a Janus particle emulsion, and drying to obtain theorganic / inorganic hybrid ABC three-component Janus particles.

Description

technical field [0001] The invention relates to an organic / inorganic hybrid three-component Janus particle and a preparation method thereof. Background technique [0002] The development of human society is mainly marked by the development of materials used, and the discovery of new materials also represents the progress of civilization. Janus materials refer to materials with a Janus structure, which is characterized by two partitions with different physical or chemical properties. In recent years, Janus materials have become an important issue in materials science research due to their unique structure and duality in performance, as well as extensive theoretical research and application prospects. Judging by the definition, as long as the material has two partitions with different properties, it can be called Janus material, and this property includes the difference in shape or structure in addition to the above. This characteristic of Janus particles also brings us a wi...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08K3/36C08K9/06
CPCC08K3/36C08K9/06C08L25/06
Inventor 杨振忠于啸天梁福鑫
Owner INST OF CHEM CHINESE ACAD OF SCI
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