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Colloidal particle with patch structure and preparation method of colloidal particle

A technology of colloidal particles and particles, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve problems such as difficult mass production and precise regulation of structures, and achieve the effect of easy functionalization

Inactive Publication Date: 2021-03-19
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Aiming at the problems existing in the prior art that it is difficult to prepare colloidal particles with a patch structure in large quantities and precisely control the structure, the present invention provides a method for precisely controlling the physical and chemical partitioning of the structure and preparing colloidal particles with a patch structure in large quantities

Method used

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  • Colloidal particle with patch structure and preparation method of colloidal particle
  • Colloidal particle with patch structure and preparation method of colloidal particle
  • Colloidal particle with patch structure and preparation method of colloidal particle

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preparation example Construction

[0086] The present invention accordingly provides a kind of preparation method according to the colloidal particle of patch structure of the present invention, comprises the following steps:

[0087] (1) crosslinking agent monomer, initiator 1, surfactant and water are mixed and emulsified to obtain crosslinking agent monomer emulsion;

[0088] (2) adding the crosslinking agent monomer emulsion into the template polymer particle emulsion, heating up after swelling, and initiating free radical polymerization to obtain the seed emulsion;

[0089] (3) mixing and emulsifying an alkoxysilane having a polymerizable group, a surfactant, an initiator 2, and water to obtain a monomer emulsion;

[0090] (4) adding an alkaline aqueous solution to the seed emulsion, and then adding the monomer emulsion dropwise therein to react to obtain colloidal particles with a patch structure; and

[0091] (5) Optionally washing and drying the product.

[0092] The preparation method of the present ...

Embodiment 1

[0123] Add 13.335 g of linear polystyrene hollow sphere emulsion with a solid content of 37.5% into 160 g of water, and ultrasonically disperse the polymer microsphere emulsion uniformly. 3.0 g of divinylbenzene, 0.03 g of azobisisobutyronitrile, 0.048 g of sodium lauryl sulfate and 20.0 g of water were mixed and ultrasonically emulsified to obtain a crosslinking agent monomer emulsion. Add the cross-linking agent monomer emulsion to the above-mentioned polymer microsphere emulsion, stir mechanically at 25°C, swell for 8h, then raise the temperature to 70°C, and react at a constant temperature for 12h to obtain crosslinked polymer microspheres (PDVB / PS hollow Particles) emulsion, that is, seed emulsion.

[0124] 0.9 g of 3-(methacryloyloxy)propyltrimethoxysilane, 0.02 g of sodium lauryl sulfate, 0.009 g of potassium persulfate and 10 g of water were mixed and ultrasonically emulsified to obtain a monomer emulsion. Take 24.6g of the above-mentioned seed emulsion (the mass of P...

Embodiment 2

[0126] Add 13.335 g of linear polystyrene hollow sphere emulsion with a solid content of 37.5% into 160 g of water, and ultrasonically disperse the polymer microsphere emulsion uniformly. 3.0 g of divinylbenzene, 0.03 g of azobisisobutyronitrile, 0.048 g of sodium lauryl sulfate and 20.0 g of water were mixed and ultrasonically emulsified to obtain a crosslinking agent monomer emulsion. Add the cross-linking agent monomer emulsion to the above-mentioned polymer microsphere emulsion, stir mechanically at 25°C, swell for 8h, then raise the temperature to 70°C, and react at a constant temperature for 12h to obtain crosslinked polymer microspheres (PDVB / PS hollow Particles) emulsion, that is, seed emulsion.

[0127] 0.9 g of 3-(methacryloyloxy)propyltrimethoxysilane, 0.02 g of sodium lauryl sulfate, 0.009 g of potassium persulfate and 10 g of water were mixed and ultrasonically emulsified to obtain a monomer emulsion. Take 24.6g of the above-mentioned seed emulsion (the mass of P...

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Abstract

The invention relates to a colloidal particle with a patch structure and a preparation method of the colloidal particle. The colloidal particle with the patch structure comprises a cross-linked polymer particle and a plurality of SiO2 patch parts located on the surface of the cross-linked polymer particle; the cross-linked polymer particle is composed of a polymer formed by a template polymer particle and a cross-linking agent; and at least a portion of the molecular chain of the template polymer particle and at least a portion of the molecular chain of the polymer formed by the cross-linkingagent are interspersed with each other.

Description

technical field [0001] The invention relates to the field of organic / inorganic composite materials, in particular to a colloidal particle with a patch structure and a preparation method thereof. Background technique [0002] With the development of science and technology, the demand for materials is more diversified, and it is increasingly difficult for materials with simple composition and structure and single properties to meet human needs. Finding a new type of material that can satisfy multiple compositions and functions on the same material surface has become a research hotspot for many researchers. [0003] "Patch structure" colloids, also known as patchy colloids, have certain functional areas on the surface, which appear as patches on the particle surface. "Patch structure" The area, number, topological shape and chemical composition of the patch regions on the surface of the colloid are the key factors that determine the properties of the colloid. The special patc...

Claims

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Application Information

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IPC IPC(8): C08F257/02C08F8/12C08F212/36C08F230/08C08F2/22B82Y30/00B82Y40/00
CPCC08F257/02C08F8/12C08F2/22B82Y30/00B82Y40/00C08F212/36C08F230/085
Inventor 梁福鑫杜德明
Owner TSINGHUA UNIV