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Preparation method of amphipathic non-spherical particles

A non-spherical, amphiphilic technology, applied in the field of preparation of amphiphilic non-spherical particles, can solve the problem of singleness, and achieve the effect of simple operation and mild experimental conditions

Inactive Publication Date: 2013-12-25
天津娇强科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the complex synthesis process for the preparation of current anisotropic composite particles and the problem of a single component that composite particles usually have, and provides a simple non-spherical composite particle with controllable particle size and multiple chemical components preparation method

Method used

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  • Preparation method of amphipathic non-spherical particles
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  • Preparation method of amphipathic non-spherical particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0022]

[0023] According to the above ratio, add 2.0g emulsifier sodium lauryl sulfate and 100.0g deionized water into the reactor, add 2M hydrochloric acid to adjust the pH of the system to 2.5, then add 10.0g seed monomer styrene, 0.5 g silane coupling agent 3-(methacryloyloxy)propyltrimethoxysilane, 0.1g initiator azobisisobutyronitrile, start stirring to form an O / W emulsion, and keep stirring the system at 30°C for 10 hours , so that the silane coupling agent undergoes a sol-gel process at the phase interface, and then the system is raised to 70 ° C, nitrogen gas is introduced, reflux is condensed, and polymerization is carried out for 8 hours, that is, a silica layer with a hydrophilic shell is obtained. The core is a seed particle of polystyrene;

[0024]

[0025] Add 80.0 g of deionized water to the seed emulsion (10.5 g) obtained in step (a). After ultrasonic dispersion, start stirring, add 3.0 g of the second monomer methyl methacrylate, and nitrogen gas is in...

Embodiment example 2

[0029] In the implementation case 2, the amount of the emulsifier is increased to 5.0 g, and the rest of the implementation process is the same as the implementation case 1.

[0030] Increasing the amount of emulsifier will form more and smaller micelles, resulting in smaller particles.

Embodiment example 3-5

[0032] In Example 3-5, the seed monomer is changed to acrylonitrile, the second monomer is styrene, tert-butyl acrylate, and α-methylstyrene, and the rest of the implementation process is the same as Example 1.

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Abstract

The invention provides a preparation method of amphipathic non-spherical particles. The preparation method is characterized in that the sizes of seeds, the thickness of shell silicon and the hydrophilicity of the seeds can be controlled by systemically adjusting the amount of an emulsifying agent and the amount of a silane coupling agent, and the growth degree of a new polymer phase can be controlled by controlling the feeding amount and the polymerization time of a second monomer, thus the nanometer / submicron non-spherical particles controllable in shape are obtained. The non-spherical particles prepared by the method have the amphipathy, can realize adsorption and ordered arrangement on a two-phase interface of an oil-phase and water-phase mixed solution, play a role in emulsification and can be used as a surface active agent and the like. The amphipathic non-spherical particles comprise organic-inorganic-organic phases, are different from the single polymer phase commonly reported in literatures and have important significance for the development of novel multi-components materials.

Description

technical field [0001] The invention belongs to the synthesis of non-spherical asymmetric composite particles, in particular to a preparation method of amphiphilic non-spherical particles. technical background [0002] Non-spherical composite particles with amphiphilicity, also known as anisotropic particles or asymmetric particles, generally refer to particles with asymmetric shape, chemical composition and / or performance, and uneven distribution. Such particles can be composed of inorganic-inorganic, inorganic-organic, and organic-organic components, and their preparation methods are also various. The main preparation methods of anisotropic composite particles commonly reported in the literature are: microfluidic method, Template self-assembly method, dispersion polymerization method, emulsion polymerization method, etc. Such particles have shown attractive application prospects in optical biosensors, electronic displays, functional probes, self-assembly, surfactants, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F212/08C08F230/08C08F2/24C08F220/14C08F220/44C08F220/18C08F212/12
Inventor 赫川牛群
Owner 天津娇强科技有限公司
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